* Btrfs scrub failure for raid 6 kernel 4.3 @ 2015-12-27 13:59 Waxhead 2015-12-27 18:29 ` Chris Murphy 2015-12-28 1:21 ` Duncan 0 siblings, 2 replies; 23+ messages in thread From: Waxhead @ 2015-12-27 13:59 UTC (permalink / raw) To: linux-btrfs Hi, I have a "toy-array" of 6x USB drives hooked up to a hub where I made a btrfs raid 6 data+metadata filesystem. I copied some files to the filesystem, ripped out one USB drive and ruined it dd if=/dev/random to various locations on the drive. Put the USB drive back and the filesystem mounts ok. If i start scrub I after seconds get the following kernel:[ 50.844026] CPU: 1 PID: 91 Comm: kworker/u4:2 Not tainted 4.3.0-1-686-pae #1 Debian 4.3.3-2 kernel:[ 50.844026] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 kernel:[ 50.844026] Workqueue: btrfs-endio-raid56 btrfs_endio_raid56_helper [btrfs] kernel:[ 50.844026] task: f642c040 ti: f664c000 task.ti: f664c000 kernel:[ 50.844026] Stack: kernel:[ 50.844026] 00000005 f0d20800 f664ded0 f86d0262 00000000 f664deac c109a0fc 00000001 kernel:[ 50.844026] f79eac40 edb4a000 edb7a000 edb8a000 edbba000 eccc1000 ecca1000 00000000 kernel:[ 50.844026] 00000000 f664de68 00000003 f664de74 ecb23000 f664de5c f5cda6a4 f0d20800 kernel:[ 50.844026] Call Trace: kernel:[ 50.844026] [<f86d0262>] ? finish_parity_scrub+0x272/0x560 [btrfs] kernel:[ 50.844026] [<c109a0fc>] ? set_next_entity+0x8c/0xba0 kernel:[ 50.844026] [<c127d130>] ? bio_endio+0x40/0x70 kernel:[ 50.844026] [<f86891fe>] ? btrfs_scrubparity_helper+0xce/0x270 [btrfs] kernel:[ 50.844026] [<c107ca7d>] ? process_one_work+0x14d/0x360 kernel:[ 50.844026] [<c107ccc9>] ? worker_thread+0x39/0x440 kernel:[ 50.844026] [<c107cc90>] ? process_one_work+0x360/0x360 kernel:[ 50.844026] [<c10821a6>] ? kthread+0xa6/0xc0 kernel:[ 50.844026] [<c1536181>] ? ret_from_kernel_thread+0x21/0x30 kernel:[ 50.844026] [<c1082100>] ? kthread_create_on_node+0x130/0x130 kernel:[ 50.844026] Code: 6e c1 e8 ac dd f2 ff 83 c4 04 5b 5d c3 8d b6 00 00 00 00 31 c9 81 3d 84 f0 6e c1 84 f0 6e c1 0f 95 c1 eb b9 8d b4 200 00 00 00 0f 0b 8d b4 26 00 00 00 00 8d bc 27 00 kernel:[ 50.844026] EIP: [<c1174858>] kunmap_high+0xa8/0xc0 SS:ESP 0068:f664de40 This is only a test setup and I will keep this filesystem for a while if it can be of any use... ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-27 13:59 Btrfs scrub failure for raid 6 kernel 4.3 Waxhead @ 2015-12-27 18:29 ` Chris Murphy 2015-12-27 23:06 ` Waxhead 2015-12-28 0:39 ` Christoph Anton Mitterer 2015-12-28 1:21 ` Duncan 1 sibling, 2 replies; 23+ messages in thread From: Chris Murphy @ 2015-12-27 18:29 UTC (permalink / raw) To: Waxhead; +Cc: Btrfs BTRFS On Sun, Dec 27, 2015 at 6:59 AM, Waxhead <waxhead@online.no> wrote: > Hi, > > I have a "toy-array" of 6x USB drives hooked up to a hub where I made a > btrfs raid 6 data+metadata filesystem. > > I copied some files to the filesystem, ripped out one USB drive and ruined > it dd if=/dev/random to various locations on the drive. Put the USB drive > back and the filesystem mounts ok. > > If i start scrub I after seconds get the following > > kernel:[ 50.844026] CPU: 1 PID: 91 Comm: kworker/u4:2 Not tainted > 4.3.0-1-686-pae #1 Debian 4.3.3-2 > kernel:[ 50.844026] Hardware name: Acer AOA150/ , BIOS v0.3310 > 10/06/2008 > kernel:[ 50.844026] Workqueue: btrfs-endio-raid56 > btrfs_endio_raid56_helper [btrfs] > kernel:[ 50.844026] task: f642c040 ti: f664c000 task.ti: f664c000 > kernel:[ 50.844026] Stack: > kernel:[ 50.844026] 00000005 f0d20800 f664ded0 f86d0262 00000000 > f664deac c109a0fc 00000001 > kernel:[ 50.844026] f79eac40 edb4a000 edb7a000 edb8a000 edbba000 > eccc1000 ecca1000 00000000 > kernel:[ 50.844026] 00000000 f664de68 00000003 f664de74 ecb23000 > f664de5c f5cda6a4 f0d20800 > kernel:[ 50.844026] Call Trace: > kernel:[ 50.844026] [<f86d0262>] ? finish_parity_scrub+0x272/0x560 > [btrfs] > kernel:[ 50.844026] [<c109a0fc>] ? set_next_entity+0x8c/0xba0 > kernel:[ 50.844026] [<c127d130>] ? bio_endio+0x40/0x70 > kernel:[ 50.844026] [<f86891fe>] ? btrfs_scrubparity_helper+0xce/0x270 > [btrfs] > kernel:[ 50.844026] [<c107ca7d>] ? process_one_work+0x14d/0x360 > kernel:[ 50.844026] [<c107ccc9>] ? worker_thread+0x39/0x440 > kernel:[ 50.844026] [<c107cc90>] ? process_one_work+0x360/0x360 > kernel:[ 50.844026] [<c10821a6>] ? kthread+0xa6/0xc0 > kernel:[ 50.844026] [<c1536181>] ? ret_from_kernel_thread+0x21/0x30 > kernel:[ 50.844026] [<c1082100>] ? kthread_create_on_node+0x130/0x130 > kernel:[ 50.844026] Code: 6e c1 e8 ac dd f2 ff 83 c4 04 5b 5d c3 8d b6 00 > 00 00 00 31 c9 81 3d 84 f0 6e c1 84 f0 6e c1 0f 95 c1 eb b9 8d b4 200 00 00 > 00 0f 0b 8d b4 26 00 00 00 00 8d bc 27 00 > kernel:[ 50.844026] EIP: [<c1174858>] kunmap_high+0xa8/0xc0 SS:ESP > 0068:f664de40 > > This is only a test setup and I will keep this filesystem for a while if it > can be of any use... Sounds like a bug, but also might be missing functionality still. If you can include the reproduce steps, including the exact locations+lengths of the random writes, that's probably useful. More than one thing could be going on. First, I don't know that Btrfs even understands the device went missing because it doesn't yet have a concept of faulty devices, and then I've seen it get confused when drives reappear with new drive designations (not uncommon), and from your call trace we don't know if that happened because there's not enough information posted. Second, if the damage is too much on a device, it almost certainly isn't recognized when reattached. But this depends on what locations were damaged. If Btrfs doesn't recognize the drive as part of the array, then the scrub request is effectively a scrub for a volume with a missing drive which you probably wouldn't ever do, you'd first replace the missing device. Scrubs happen on normally operating arrays not degraded ones. So it's uncertain either Btrfs, or the user, had any idea what state the volume was actually in at the time. Conversely on mdadm, it knows in such a case to mark a device as faulty, the array automatically goes degraded, but when the drive is reattached it is not automatically re-added. When the user re-adds, typically a complete rebuild happens unless there's a write-intent bitmap, which isn't a default at create time. -- Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-27 18:29 ` Chris Murphy @ 2015-12-27 23:06 ` Waxhead 2015-12-28 1:48 ` Duncan 2015-12-28 0:39 ` Christoph Anton Mitterer 1 sibling, 1 reply; 23+ messages in thread From: Waxhead @ 2015-12-27 23:06 UTC (permalink / raw) To: Chris Murphy; +Cc: Btrfs BTRFS Chris Murphy wrote: > On Sun, Dec 27, 2015 at 6:59 AM, Waxhead <waxhead@online.no> wrote: >> Hi, >> >> I have a "toy-array" of 6x USB drives hooked up to a hub where I made a >> btrfs raid 6 data+metadata filesystem. >> >> I copied some files to the filesystem, ripped out one USB drive and ruined >> it dd if=/dev/random to various locations on the drive. Put the USB drive >> back and the filesystem mounts ok. >> >> If i start scrub I after seconds get the following >> >> kernel:[ 50.844026] CPU: 1 PID: 91 Comm: kworker/u4:2 Not tainted >> 4.3.0-1-686-pae #1 Debian 4.3.3-2 >> kernel:[ 50.844026] Hardware name: Acer AOA150/ , BIOS v0.3310 >> 10/06/2008 >> kernel:[ 50.844026] Workqueue: btrfs-endio-raid56 >> btrfs_endio_raid56_helper [btrfs] >> kernel:[ 50.844026] task: f642c040 ti: f664c000 task.ti: f664c000 >> kernel:[ 50.844026] Stack: >> kernel:[ 50.844026] 00000005 f0d20800 f664ded0 f86d0262 00000000 >> f664deac c109a0fc 00000001 >> kernel:[ 50.844026] f79eac40 edb4a000 edb7a000 edb8a000 edbba000 >> eccc1000 ecca1000 00000000 >> kernel:[ 50.844026] 00000000 f664de68 00000003 f664de74 ecb23000 >> f664de5c f5cda6a4 f0d20800 >> kernel:[ 50.844026] Call Trace: >> kernel:[ 50.844026] [<f86d0262>] ? finish_parity_scrub+0x272/0x560 >> [btrfs] >> kernel:[ 50.844026] [<c109a0fc>] ? set_next_entity+0x8c/0xba0 >> kernel:[ 50.844026] [<c127d130>] ? bio_endio+0x40/0x70 >> kernel:[ 50.844026] [<f86891fe>] ? btrfs_scrubparity_helper+0xce/0x270 >> [btrfs] >> kernel:[ 50.844026] [<c107ca7d>] ? process_one_work+0x14d/0x360 >> kernel:[ 50.844026] [<c107ccc9>] ? worker_thread+0x39/0x440 >> kernel:[ 50.844026] [<c107cc90>] ? process_one_work+0x360/0x360 >> kernel:[ 50.844026] [<c10821a6>] ? kthread+0xa6/0xc0 >> kernel:[ 50.844026] [<c1536181>] ? ret_from_kernel_thread+0x21/0x30 >> kernel:[ 50.844026] [<c1082100>] ? kthread_create_on_node+0x130/0x130 >> kernel:[ 50.844026] Code: 6e c1 e8 ac dd f2 ff 83 c4 04 5b 5d c3 8d b6 00 >> 00 00 00 31 c9 81 3d 84 f0 6e c1 84 f0 6e c1 0f 95 c1 eb b9 8d b4 200 00 00 >> 00 0f 0b 8d b4 26 00 00 00 00 8d bc 27 00 >> kernel:[ 50.844026] EIP: [<c1174858>] kunmap_high+0xa8/0xc0 SS:ESP >> 0068:f664de40 >> >> This is only a test setup and I will keep this filesystem for a while if it >> can be of any use... > Sounds like a bug, but also might be missing functionality still. If > you can include the reproduce steps, including the exact > locations+lengths of the random writes, that's probably useful. > > More than one thing could be going on. First, I don't know that Btrfs > even understands the device went missing because it doesn't yet have a > concept of faulty devices, and then I've seen it get confused when > drives reappear with new drive designations (not uncommon), and from > your call trace we don't know if that happened because there's not > enough information posted. Second, if the damage is too much on a > device, it almost certainly isn't recognized when reattached. But this > depends on what locations were damaged. If Btrfs doesn't recognize the > drive as part of the array, then the scrub request is effectively a > scrub for a volume with a missing drive which you probably wouldn't > ever do, you'd first replace the missing device. Scrubs happen on > normally operating arrays not degraded ones. So it's uncertain either > Btrfs, or the user, had any idea what state the volume was actually in > at the time. > > Conversely on mdadm, it knows in such a case to mark a device as > faulty, the array automatically goes degraded, but when the drive is > reattached it is not automatically re-added. When the user re-adds, > typically a complete rebuild happens unless there's a write-intent > bitmap, which isn't a default at create time. > I am afraid I can't exactly include the how to reproduce steps. I do however have the filesystem in a "bad state" so if there is anything I can do - let me know. First of all ... a "btrfs filesystem show" does list all drives Label: none uuid: 2832346e-0720-499f-8239-355534e5721b Total devices 6 FS bytes used 8.53GiB devid 1 size 7.68GiB used 3.08GiB path /dev/sdb1 devid 2 size 7.68GiB used 3.08GiB path /dev/sdc1 devid 3 size 7.68GiB used 3.08GiB path /dev/sdd1 devid 4 size 7.68GiB used 3.08GiB path /dev/sde1 devid 5 size 7.68GiB used 3.08GiB path /dev/sdf1 devid 6 size 7.68GiB used 3.08GiB path /dev/sdg1 mount /dev/sdb1 /mnt/ btrfs filesystem df /mnt Data, RAID6: total=12.00GiB, used=8.45GiB System, RAID6: total=64.00MiB, used=16.00KiB Metadata, RAID6: total=256.00MiB, used=84.58MiB GlobalReserve, single: total=32.00MiB, used=0.00B btrfs scrub status /mnt scrub status for 2832346e-0720-499f-8239-355534e5721b scrub started at Sun Mar 29 23:21:04 2015 and finished after 00:01:04 total bytes scrubbed: 1.97GiB with 14549 errors error details: super=2 csum=14547 corrected errors: 0, uncorrectable errors: 14547, unverified errors: 0 Now here is the first worrying part... it says that scrub started at Sun Mar 29. That is NOT true, the first scrub I did on this filesystem was a few days ago and it claims it is a lot of uncorrectable errors. Why? This is after all a raid6 filesystem correct?! btrfs scrub start -B /mnt Message from syslogd@a150 at Dec 27 23:44:22 ... kernel:[ 611.478448] CPU: 0 PID: 1200 Comm: kworker/u4:1 Not tainted 4.3.0-1-686-pae #1 Debian 4.3.3-2 Message from syslogd@a150 at Dec 27 23:44:22 ... kernel:[ 611.478448] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 kernel:[ 611.478448] Workqueue: btrfs-endio-raid56 btrfs_endio_raid56_helper [btrfs] kernel:[ 611.478448] task: ec403040 ti: ec4a2000 task.ti: ec4a2000 kernel:[ 611.478448] Stack: kernel:[ 611.478448] 00000005 ecd78800 ec4a3ed0 f8768262 00000000 0000008e 5ead4067 0000008e kernel:[ 611.478448] 5ead3301 ec5bd000 ec5ce000 ec5fd000 ec62d000 ec5a9000 ec5a8000 f79d27cc kernel:[ 611.478448] 00000000 ec4a3e68 00000003 ec4a3e74 ec32d700 ec4a3e5c f5ccaba0 ecd78800 kernel:[ 611.478448] Call Trace: kernel:[ 611.478448] [<f8768262>] ? finish_parity_scrub+0x272/0x560 [btrfs] kernel:[ 611.478448] [<c127d130>] ? bio_endio+0x40/0x70 kernel:[ 611.478448] [<f87211fe>] ? btrfs_scrubparity_helper+0xce/0x270 [btrfs] kernel:[ 611.478448] [<c107ca7d>] ? process_one_work+0x14d/0x360 kernel:[ 611.482350] [<c107ccc9>] ? worker_thread+0x39/0x440 kernel:[ 611.482350] [<c107cc90>] ? process_one_work+0x360/0x360 kernel:[ 611.482350] [<c10821a6>] ? kthread+0xa6/0xc0 kernel:[ 611.482350] [<c1536181>] ? ret_from_kernel_thread+0x21/0x30 kernel:[ 611.482350] [<c1082100>] ? kthread_create_on_node+0x130/0x130 kernel:[ 611.482350] Code: c4 04 5b 5d c3 8d b6 00 00 00 00 31 c9 81 3d 84 f0 6e c1 84 f0 6e c1 0f 95 c1 eb b9 8d b4 26 00 00 00 00 0f 0b 8d b6 00 00 00 00 <0f> 0b 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 56 53 kernel:[ 611.482350] EIP: [<c1174860>] kunmap_high+0xb0/0xc0 SS:ESP 0068:ec4a3e40 This is what I got from my ssh login , there is a longer stacktrace on the computer I am testing this on... what I can read on the screen is (hope I got all the numbers right): ? print_oops_end_marker+0x41/0x70 ? oops_end+0x92/0xd0 ? no_context+0x100/0x2b0 ? __bad_area_nosemaphore+0xb5/0x140 ? dequeue_task_fair+0x4c/0xbd0 ? check_preempt_curr+0x7a/0x90 ? __do_page_fault+0x460/0x460 ? bad_area_nosemaphore+0x17/0x20 ? error_code+0x67/0x6c ? alloc_pid+0x5b/0x420 ? kthread_data+0xf/0x20 ? wq_worker_sleeping+0x10/0x90 ? __schedule+0x4e2/0x8c0 ? schedule+0x2b/0x80 ? do_exit+0x746/0x9f0 ? vprintk_default+0x37/0x40 ? printk_0x17/0x19 ? oops_end+0x92 ? do_error_trap+0x8a/0x120 ? kunmap_high+0xb0/0xc0 ? __alloc_pages_nodemask+0x13b/0x850 ? do_overflow+0x30/0x30 ? do_invalid_op+0x24/0x30 ? error_code+0x67/0x6c ? compact_unblock_should_abort.isra.31+0x7b/0x90 ? kunmap_high+0xb0/0xc0 ? finish_parity_scrub+0x272/0x556 [btrfs] ? bio_endio+0x40/0x70 ? btrfs_scrubparity_helper+0xce/0x270 [btrfs] ? process_one_work+0x14d/0x360 ? worker_thread+0x39/0x440 ? process_one_work+0x360/0x360 ? kthread+0xa6/0xc0 ? ret_from_kernel_thread+0x21/0x30 ? kthread_create_on_node+0x130/0x130 ---[end trace....] I hope this is of more help. Again if there is anything I can do I am happy to help. I don't need this filesystem so no need to recover it. ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-27 23:06 ` Waxhead @ 2015-12-28 1:48 ` Duncan 2015-12-28 2:04 ` Waxhead 0 siblings, 1 reply; 23+ messages in thread From: Duncan @ 2015-12-28 1:48 UTC (permalink / raw) To: linux-btrfs Waxhead posted on Mon, 28 Dec 2015 00:06:46 +0100 as excerpted: > btrfs scrub status /mnt scrub status for > 2832346e-0720-499f-8239-355534e5721b > scrub started at Sun Mar 29 23:21:04 2015 and finished after > 00:01:04 > total bytes scrubbed: 1.97GiB with 14549 errors error details: > super=2 csum=14547 corrected errors: 0, uncorrectable errors: > 14547, unverified > errors: 0 > > Now here is the first worrying part... it says that scrub started at Sun > Mar 29. That is NOT true, the first scrub I did on this filesystem was a > few days ago and it claims it is a lot of uncorrectable errors. Why? > This is after all a raid6 filesystem correct?! Hmm... The status is stored in readable plain-text files in /var/lib/ btrfs/scrub.status.*, where the * is the UUID. If you check there, the start time (t_start) seems to be in POSIX time. Is it possible you were or are running the scrub from, for instance, a rescue image that might not set the system time correctly and that falls back to, say, the date the rescue image was created, if it can't get network connectivity or some such? -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 1:48 ` Duncan @ 2015-12-28 2:04 ` Waxhead 2015-12-28 2:18 ` Chris Murphy 2015-12-28 4:02 ` Duncan 0 siblings, 2 replies; 23+ messages in thread From: Waxhead @ 2015-12-28 2:04 UTC (permalink / raw) To: Duncan, linux-btrfs Duncan wrote: > Waxhead posted on Mon, 28 Dec 2015 00:06:46 +0100 as excerpted: > >> btrfs scrub status /mnt scrub status for >> 2832346e-0720-499f-8239-355534e5721b >> scrub started at Sun Mar 29 23:21:04 2015 and finished after >> 00:01:04 >> total bytes scrubbed: 1.97GiB with 14549 errors error details: >> super=2 csum=14547 corrected errors: 0, uncorrectable errors: >> 14547, unverified >> errors: 0 >> >> Now here is the first worrying part... it says that scrub started at Sun >> Mar 29. That is NOT true, the first scrub I did on this filesystem was a >> few days ago and it claims it is a lot of uncorrectable errors. Why? >> This is after all a raid6 filesystem correct?! > Hmm... The status is stored in readable plain-text files in /var/lib/ > btrfs/scrub.status.*, where the * is the UUID. If you check there, the > start time (t_start) seems to be in POSIX time. > > Is it possible you were or are running the scrub from, for instance, a > rescue image that might not set the system time correctly and that falls > back to, say, the date the rescue image was created, if it can't get > network connectivity or some such? > No I don't think so.... # ls -la /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b -rw------- 1 root root 2315 Mar 29 2015 /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b # cat /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b scrub status:1 2832346e-0720-499f-8239-355534e5721b:1|data_extents_scrubbed:5391|tree_extents_scrubbed:21|data_bytes_scrubbed:352542720|tree_bytes_scrubbed:344064|read_errors:0|csum_errors:0|verify_errors:0|no_csum:32|csum_discards:0|super_errors:0|malloc_errors:0|uncorrectable_errors:0|corrected_errors:0|last_physical:3306160128|t_start:1427664064|t_resumed:0|duration:51|canceled:0|finished:1 2832346e-0720-499f-8239-355534e5721b:2|data_extents_scrubbed:5404|tree_extents_scrubbed:26|data_bytes_scrubbed:353517568|tree_bytes_scrubbed:425984|read_errors:0|csum_errors:0|verify_errors:0|no_csum:64|csum_discards:2|super_errors:0|malloc_errors:0|uncorrectable_errors:0|corrected_errors:0|last_physical:3306160128|t_start:1427664064|t_resumed:0|duration:51|canceled:0|finished:1 2832346e-0720-499f-8239-355534e5721b:3|data_extents_scrubbed:5396|tree_extents_scrubbed:19|data_bytes_scrubbed:352718848|tree_bytes_scrubbed:311296|read_errors:0|csum_errors:0|verify_errors:0|no_csum:48|csum_discards:2|super_errors:0|malloc_errors:0|uncorrectable_errors:0|corrected_errors:0|last_physical:3306160128|t_start:1427664064|t_resumed:0|duration:51|canceled:0|finished:1 2832346e-0720-499f-8239-355534e5721b:4|data_extents_scrubbed:5391|tree_extents_scrubbed:31|data_bytes_scrubbed:352739328|tree_bytes_scrubbed:507904|read_errors:0|csum_errors:14547|verify_errors:0|no_csum:32|csum_discards:0|super_errors:2|malloc_errors:0|uncorrectable_errors:14547|corrected_errors:0|last_physical:2282749952|t_start:1427664064|t_resumed:0|duration:64|canceled:0|finished:1 2832346e-0720-499f-8239-355534e5721b:5|data_extents_scrubbed:5393|tree_extents_scrubbed:23|data_bytes_scrubbed:352665600|tree_bytes_scrubbed:376832|read_errors:0|csum_errors:0|verify_errors:0|no_csum:48|csum_discards:0|super_errors:0|malloc_errors:0|uncorrectable_errors:0|corrected_errors:0|last_physical:2534408192|t_start:1427664064|t_resumed:0|duration:51|canceled:0|finished:1 2832346e-0720-499f-8239-355534e5721b:6|data_extents_scrubbed:5407|tree_extents_scrubbed:33|data_bytes_scrubbed:353361920|tree_bytes_scrubbed:540672|read_errors:0|csum_errors:0|verify_errors:0|no_csum:48|csum_discards:2|super_errors:0|malloc_errors:0|uncorrectable_errors:0|corrected_errors:0|last_physical:3306160128|t_start:1427664064|t_resumed:0|duration:51|canceled:0|finished:1 # date Mon Dec 28 02:54:11 CET 2015 Just to clear up any possible misunderstandings. I run this from a simple netbook, and I have no idea why the date is off by so much. Since all drives register and since I can even mount the filesystem. Since I can reproduce this every time I try to start a scrub I have not tried to run balance , defrag or just md5sum all the files on the filesystem to see if that fixes up things a bit. In a raid6 config you should be able to loose up to two drives and honestly so far only one drive is hampered and even if another one for any bizarre reason should contain damaged data things should "just work" right? Note: I have used the same USB drives (memory sticks really) to create various configs of btrfs filesystems earlier. Could it be old metadata in the filesystem that mess up things? Is not metadata stamped with the UUID of the filesystem to prevent such things? ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 2:04 ` Waxhead @ 2015-12-28 2:18 ` Chris Murphy 2015-12-28 21:08 ` Waxhead 2015-12-28 4:02 ` Duncan 1 sibling, 1 reply; 23+ messages in thread From: Chris Murphy @ 2015-12-28 2:18 UTC (permalink / raw) To: Waxhead; +Cc: Duncan, Btrfs BTRFS On Sun, Dec 27, 2015 at 7:04 PM, Waxhead <waxhead@online.no> wrote: > Since all drives register and since I can even mount the filesystem. OK so you've umounted the file system, reconnected all devices, mounted the file system normally, and there are no problems reported in dmesg? If so, yes I agree that a scrub should probably work, it should fix any problems with the simulated corrupt device, and also not crash. What if you umount, and run btrfs check without --repair, what are the results? This is btrfs-progs 4.3.1? -- Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 2:18 ` Chris Murphy @ 2015-12-28 21:08 ` Waxhead 2015-12-28 21:23 ` Chris Murphy 0 siblings, 1 reply; 23+ messages in thread From: Waxhead @ 2015-12-28 21:08 UTC (permalink / raw) To: Chris Murphy; +Cc: Duncan, Btrfs BTRFS Chris Murphy wrote: > On Sun, Dec 27, 2015 at 7:04 PM, Waxhead <waxhead@online.no> wrote: > >> Since all drives register and since I can even mount the filesystem. > OK so you've umounted the file system, reconnected all devices, > mounted the file system normally, and there are no problems reported > in dmesg? > > If so, yes I agree that a scrub should probably work, it should fix > any problems with the simulated corrupt device, and also not crash. > > What if you umount, and run btrfs check without --repair, what are the > results? This is btrfs-progs 4.3.1? > The output from dmesg after mounting [ 546.857533] BTRFS info (device sdg1): disk space caching is enabled [ 546.872126] BTRFS: bdev /dev/sde1 errs: wr 10, rd 0, flush 0, corrupt 29094, gen 4 [ 546.872165] BTRFS: bdev /dev/sdb1 errs: wr 16, rd 7, flush 0, corrupt 0, gen 0 This is the output I get from btrfs check /dev/sdb1 > somefile.output .... (note the filesystem was checked in unmounted state) Checking filesystem on /dev/sdb1 UUID: 2832346e-0720-499f-8239-355534e5721b The following tree block(s) is corrupted in tree 5: tree block bytenr: 28488941568, level: 1, node key: (52273, 1, 0) The following data extent is lost in tree 5: inode: 104721, offset:0, disk_bytenr: 37828165632, disk_len: 524288 found 9161007108 bytes used err is 1 total csum bytes: 8859672 total tree bytes: 80969728 total fs tree bytes: 66633728 total extent tree bytes: 3211264 btree space waste bytes: 10638420 file data blocks allocated: 7929208832 referenced 7929208832 btrfs-progs v4.3 I also get a pretty fantastic amount of errors that will not be redirected to a file. ---snip--- parent transid verify failed on 28597895168 wanted 371 found 339 parent transid verify failed on 28597895168 wanted 371 found 339 checksum verify failed on 28597895168 found 5D16DA87 wanted B9F56731 checksum verify failed on 28597895168 found 1183EB4E wanted C18D87AC checksum verify failed on 28597895168 found 1183EB4E wanted C18D87AC bytenr mismatch, want=28597895168, have=147474999040 Incorrect local backref count on 37826895872 root 5 owner 104850 offset 0 found 0 wanted 1 back 0x94ac688 Backref disk bytenr does not match extent record, bytenr=37826895872, ref bytenr=0 backpointer mismatch on [37826895872 131072] owner ref check failed [37826895872 131072] ref mismatch on [37827117056 475136] extent item 1, found 0 parent transid verify failed on 28597714944 wanted 371 found 339 parent transid verify failed on 28597714944 wanted 371 found 339 checksum verify failed on 28597714944 found 49CB81B9 wanted AD283C0F checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 bytenr mismatch, want=28597714944, have=147480498944 Incorrect local backref count on 37827117056 root 5 owner 104719 offset 0 found 0 wanted 1 back 0x93688b0 Backref disk bytenr does not match extent record, bytenr=37827117056, ref bytenr=37827026944 backpointer mismatch on [37827117056 475136] owner ref check failed [37827117056 475136] ref mismatch on [37827641344 487424] extent item 1, found 0 parent transid verify failed on 28597714944 wanted 371 found 339 parent transid verify failed on 28597714944 wanted 371 found 339 checksum verify failed on 28597714944 found 49CB81B9 wanted AD283C0F checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 bytenr mismatch, want=28597714944, have=147480498944 Incorrect local backref count on 37827641344 root 5 owner 104720 offset 0 found 0 wanted 1 back 0x94ac778 Backref disk bytenr does not match extent record, bytenr=37827641344, ref bytenr=0 backpointer mismatch on [37827641344 487424] owner ref check failed [37827641344 487424] ref mismatch on [37828165632 524288] extent item 1, found 0 parent transid verify failed on 28597714944 wanted 371 found 339 parent transid verify failed on 28597714944 wanted 371 found 339 checksum verify failed on 28597714944 found 49CB81B9 wanted AD283C0F checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 bytenr mismatch, want=28597714944, have=147480498944 Incorrect local backref count on 37828165632 root 5 owner 104721 offset 0 found 0 wanted 1 back 0x94ac868 Backref disk bytenr does not match extent record, bytenr=37828165632, ref bytenr=0 backpointer mismatch on [37828165632 524288] owner ref check failed [37828165632 524288] checking free space cache checking fs roots ---snip end--- ---snippety snip--- root 5 inode 53325 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 14 name pthreadtypes.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53328 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 8 name select.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53329 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 9 name select2.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53330 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 5 name sem.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53331 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 11 name semaphore.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53333 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 9 name setjmp2.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53343 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 10 name sockaddr.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53345 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 9 name socket2.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53347 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 8 name stab.def filetype 1 errors 6, no dir index, no inode ref root 5 inode 53350 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 9 name statvfs.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53351 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 12 name stdio-ldbl.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53352 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 12 name stdio-lock.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53361 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 9 name string2.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 53384 errors 2001, no inode item, link count wrong unresolved ref dir 52207 index 0 namelen 12 name wchar-ldbl.h filetype 1 errors 6, no dir index, no inode ref root 5 inode 62056 errors 2001, no inode item, link count wrong unresolved ref dir 51339 index 0 namelen 5 name local filetype 2 errors 6, no dir index, no inode ref root 5 inode 62093 errors 2001, no inode item, link count wrong unresolved ref dir 51339 index 0 namelen 4 name sbin filetype 2 errors 6, no dir index, no inode ref root 5 inode 62344 errors 2001, no inode item, link count wrong unresolved ref dir 51339 index 0 namelen 5 name share filetype 2 errors 6, no dir index, no inode ref root 5 inode 104721 errors 4001, no inode item, orphan file extent The following data extent is lost in tree 5: inode: 104721, offset:0, disk_bytenr: 37828165632, disk_len: 524288 root 5 inode 105299 errors 2001, no inode item, link count wrong unresolved ref dir 51339 index 0 namelen 3 name src filetype 2 errors 6, no dir index, no inode ref ---snippety snip end--- ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 21:08 ` Waxhead @ 2015-12-28 21:23 ` Chris Murphy [not found] ` <5681BDD0.1060407@online.no> 0 siblings, 1 reply; 23+ messages in thread From: Chris Murphy @ 2015-12-28 21:23 UTC (permalink / raw) To: Waxhead; +Cc: Btrfs BTRFS Hopefully a developer responds because I can only make so much out of this, so take it with a grain of salt. On Mon, Dec 28, 2015 at 2:08 PM, Waxhead <waxhead@online.no> wrote: > Chris Murphy wrote: >> >> On Sun, Dec 27, 2015 at 7:04 PM, Waxhead <waxhead@online.no> wrote: >> >>> Since all drives register and since I can even mount the filesystem. >> >> OK so you've umounted the file system, reconnected all devices, >> mounted the file system normally, and there are no problems reported >> in dmesg? >> >> If so, yes I agree that a scrub should probably work, it should fix >> any problems with the simulated corrupt device, and also not crash. >> >> What if you umount, and run btrfs check without --repair, what are the >> results? This is btrfs-progs 4.3.1? >> > The output from dmesg after mounting > [ 546.857533] BTRFS info (device sdg1): disk space caching is enabled > [ 546.872126] BTRFS: bdev /dev/sde1 errs: wr 10, rd 0, flush 0, corrupt > 29094, gen 4 > [ 546.872165] BTRFS: bdev /dev/sdb1 errs: wr 16, rd 7, flush 0, corrupt 0, > gen 0 These are static counts, not in-progress errors for those devices. /dev/sde1 has lots of corruptions, so I'm guessing that's the device you intentionally corrupted. /dev/sdb1 has read and write errors and also has a different generation than sde1. So there's at least two devices with problems. > > > This is the output I get from btrfs check /dev/sdb1 > somefile.output .... > (note the filesystem was checked in unmounted state) > > Checking filesystem on /dev/sdb1 > UUID: 2832346e-0720-499f-8239-355534e5721b > The following tree block(s) is corrupted in tree 5: > tree block bytenr: 28488941568, level: 1, node key: (52273, 1, 0) > The following data extent is lost in tree 5: > inode: 104721, offset:0, disk_bytenr: 37828165632, disk_len: 524288 Short of a dev asking for something else, I'd take a btrfs-image -t4 -c9 to a different file system (do this umounted). Then use btrfs restore to get anything out that you care about. And then see if btrfs check --repair can fix this. > found 9161007108 bytes used err is 1 > total csum bytes: 8859672 > total tree bytes: 80969728 > total fs tree bytes: 66633728 > total extent tree bytes: 3211264 > btree space waste bytes: 10638420 > file data blocks allocated: 7929208832 > referenced 7929208832 > btrfs-progs v4.3 > > I also get a pretty fantastic amount of errors that will not be redirected > to a file. > > ---snip--- > parent transid verify failed on 28597895168 wanted 371 found 339 > parent transid verify failed on 28597895168 wanted 371 found 339 So transid = generation. You have a wanted of 371, but at mount time above it reports generation 4 and 0 for devs sde1 and sdb1 respectively. That's a big mismatch. It sounds to me like more is going on than just one device being intentionally corrupted. > checksum verify failed on 28597895168 found 5D16DA87 wanted B9F56731 > checksum verify failed on 28597895168 found 1183EB4E wanted C18D87AC > checksum verify failed on 28597895168 found 1183EB4E wanted C18D87AC > bytenr mismatch, want=28597895168, have=147474999040 > Incorrect local backref count on 37826895872 root 5 owner 104850 offset 0 > found 0 wanted 1 back 0x94ac688 > Backref disk bytenr does not match extent record, bytenr=37826895872, ref > bytenr=0 > backpointer mismatch on [37826895872 131072] > owner ref check failed [37826895872 131072] > ref mismatch on [37827117056 475136] extent item 1, found 0 > parent transid verify failed on 28597714944 wanted 371 found 339 > parent transid verify failed on 28597714944 wanted 371 found 339 > checksum verify failed on 28597714944 found 49CB81B9 wanted AD283C0F > checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 > checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 > bytenr mismatch, want=28597714944, have=147480498944 > Incorrect local backref count on 37827117056 root 5 owner 104719 offset 0 > found 0 wanted 1 back 0x93688b0 > Backref disk bytenr does not match extent record, bytenr=37827117056, ref > bytenr=37827026944 > backpointer mismatch on [37827117056 475136] > owner ref check failed [37827117056 475136] > ref mismatch on [37827641344 487424] extent item 1, found 0 > parent transid verify failed on 28597714944 wanted 371 found 339 > parent transid verify failed on 28597714944 wanted 371 found 339 > checksum verify failed on 28597714944 found 49CB81B9 wanted AD283C0F > checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 > checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 > bytenr mismatch, want=28597714944, have=147480498944 > Incorrect local backref count on 37827641344 root 5 owner 104720 offset 0 > found 0 wanted 1 back 0x94ac778 > Backref disk bytenr does not match extent record, bytenr=37827641344, ref > bytenr=0 > backpointer mismatch on [37827641344 487424] > owner ref check failed [37827641344 487424] > ref mismatch on [37828165632 524288] extent item 1, found 0 > parent transid verify failed on 28597714944 wanted 371 found 339 > parent transid verify failed on 28597714944 wanted 371 found 339 > checksum verify failed on 28597714944 found 49CB81B9 wanted AD283C0F > checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 > checksum verify failed on 28597714944 found D9F20AF8 wanted 1A5EE553 > bytenr mismatch, want=28597714944, have=147480498944 > Incorrect local backref count on 37828165632 root 5 owner 104721 offset 0 > found 0 wanted 1 back 0x94ac868 > Backref disk bytenr does not match extent record, bytenr=37828165632, ref > bytenr=0 > backpointer mismatch on [37828165632 524288] > owner ref check failed [37828165632 524288] > checking free space cache > checking fs roots > ---snip end--- > > ---snippety snip--- > root 5 inode 53325 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 14 name pthreadtypes.h > filetype 1 errors 6, no dir index, no inode ref > root 5 inode 53328 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 8 name select.h filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53329 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 9 name select2.h filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53330 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 5 name sem.h filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53331 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 11 name semaphore.h > filetype 1 errors 6, no dir index, no inode ref > root 5 inode 53333 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 9 name setjmp2.h filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53343 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 10 name sockaddr.h filetype > 1 errors 6, no dir index, no inode ref > root 5 inode 53345 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 9 name socket2.h filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53347 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 8 name stab.def filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53350 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 9 name statvfs.h filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53351 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 12 name stdio-ldbl.h > filetype 1 errors 6, no dir index, no inode ref > root 5 inode 53352 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 12 name stdio-lock.h > filetype 1 errors 6, no dir index, no inode ref > root 5 inode 53361 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 9 name string2.h filetype 1 > errors 6, no dir index, no inode ref > root 5 inode 53384 errors 2001, no inode item, link count wrong > unresolved ref dir 52207 index 0 namelen 12 name wchar-ldbl.h > filetype 1 errors 6, no dir index, no inode ref > root 5 inode 62056 errors 2001, no inode item, link count wrong > unresolved ref dir 51339 index 0 namelen 5 name local filetype 2 > errors 6, no dir index, no inode ref > root 5 inode 62093 errors 2001, no inode item, link count wrong > unresolved ref dir 51339 index 0 namelen 4 name sbin filetype 2 > errors 6, no dir index, no inode ref > root 5 inode 62344 errors 2001, no inode item, link count wrong > unresolved ref dir 51339 index 0 namelen 5 name share filetype 2 > errors 6, no dir index, no inode ref > root 5 inode 104721 errors 4001, no inode item, orphan file extent > The following data extent is lost in tree 5: > inode: 104721, offset:0, disk_bytenr: 37828165632, disk_len: 524288 > root 5 inode 105299 errors 2001, no inode item, link count wrong > unresolved ref dir 51339 index 0 namelen 3 name src filetype 2 > errors 6, no dir index, no inode ref > ---snippety snip end--- > > -- Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
[parent not found: <5681BDD0.1060407@online.no>]
* Re: Btrfs scrub failure for raid 6 kernel 4.3 [not found] ` <5681BDD0.1060407@online.no> @ 2015-12-29 0:29 ` Chris Murphy 2015-12-29 20:19 ` Waxhead 0 siblings, 1 reply; 23+ messages in thread From: Chris Murphy @ 2015-12-29 0:29 UTC (permalink / raw) To: Waxhead; +Cc: Btrfs BTRFS On Mon, Dec 28, 2015 at 3:55 PM, Waxhead <waxhead@online.no> wrote: > I tried the following.... > > btrfs-image -t4 -c9 /dev/sdb1 /btrfs_raid6.img > checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 > checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 > checksum verify failed on 28734324736 found 5F516E2A wanted BBB2D39C > checksum verify failed on 28734324736 found C4AA0B8D wanted 41745FB5 > checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 > bytenr mismatch, want=28734324736, have=16273726433708437499 > Error reading metadata block > Error adding block -5 > checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 > checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 > checksum verify failed on 28734324736 found 5F516E2A wanted BBB2D39C > checksum verify failed on 28734324736 found C4AA0B8D wanted 41745FB5 > checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 > bytenr mismatch, want=28734324736, have=16273726433708437499 > Error reading metadata block > Error flushing pending -5 > create failed (Success) > > Well, I can't make out what this is supposed to mean, but no output file... Dunno. Maybe btrfs-show-super -fa for each device, along with btrfs-debug-tree <dev> output to a file might have some useful info for a dev. It could be a while before we hear from one though, considering the season. > Here is a (rather long) stack trace... should I use a pastebin instead of > such large posts on this mailinglist?! Nah if it posts without wrapping and all of it can go on list, best on list. I'm expecting the balance fails because the fs is actually damaged in a way neither the kernel or btrfs check can work around. So I think it's an interesting case, but even better is if it's reproducible. The thing is, you have one device with generation 0 which really makes no sense to me; and another with generation 4 which is the one sabotaged. Yet the fs mounts without complaint, and without the need for degraded mount option. Seems strange to me, and may not be reproducible if there's something else that's happen unaccounted for. -- Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-29 0:29 ` Chris Murphy @ 2015-12-29 20:19 ` Waxhead 2015-12-30 4:22 ` Chris Murphy 0 siblings, 1 reply; 23+ messages in thread From: Waxhead @ 2015-12-29 20:19 UTC (permalink / raw) To: Chris Murphy; +Cc: Btrfs BTRFS Chris Murphy wrote: > On Mon, Dec 28, 2015 at 3:55 PM, Waxhead <waxhead@online.no> wrote: > >> I tried the following.... >> >> btrfs-image -t4 -c9 /dev/sdb1 /btrfs_raid6.img >> checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 >> checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 >> checksum verify failed on 28734324736 found 5F516E2A wanted BBB2D39C >> checksum verify failed on 28734324736 found C4AA0B8D wanted 41745FB5 >> checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 >> bytenr mismatch, want=28734324736, have=16273726433708437499 >> Error reading metadata block >> Error adding block -5 >> checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 >> checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 >> checksum verify failed on 28734324736 found 5F516E2A wanted BBB2D39C >> checksum verify failed on 28734324736 found C4AA0B8D wanted 41745FB5 >> checksum verify failed on 28734324736 found C3E98F3B wanted EB2392C6 >> bytenr mismatch, want=28734324736, have=16273726433708437499 >> Error reading metadata block >> Error flushing pending -5 >> create failed (Success) >> >> Well, I can't make out what this is supposed to mean, but no output file... > Dunno. Maybe btrfs-show-super -fa for each device, along with > btrfs-debug-tree <dev> output to a file might have some useful info > for a dev. It could be a while before we hear from one though, > considering the season. > The btrfs-debug-tree creates about 56.3 megabytes of text for each device a few checksums (marked [match]) and dev.item.uuid differs between the files for all partitions so I will leave that out of this post. The output of btrfs-show-super -fa for each device follows: --snip-- superblock: bytenr=65536, device=/dev/sdb1 --------------------------------------------------------- csum 0xdedfa466 [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid c14fb599-f515-4feb-a458-227af0af683b dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 1 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=67108864, device=/dev/sdb1 --------------------------------------------------------- csum 0x7ebe8ca8 [match] bytenr 67108864 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid c14fb599-f515-4feb-a458-227af0af683b dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 1 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=65536, device=/dev/sdc1 --------------------------------------------------------- csum 0xf975b895 [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid 9a1af441-88fc-43b1-b1f8-e1d1163195ef dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 2 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=67108864, device=/dev/sdc1 --------------------------------------------------------- csum 0x5914905b [match] bytenr 67108864 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid 9a1af441-88fc-43b1-b1f8-e1d1163195ef dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 2 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=65536, device=/dev/sdd1 --------------------------------------------------------- csum 0x182c19c3 [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid a1ae2083-2730-4611-b019-ba9954c8fa13 dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 3 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=67108864, device=/dev/sdd1 --------------------------------------------------------- csum 0xb84d310d [match] bytenr 67108864 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid a1ae2083-2730-4611-b019-ba9954c8fa13 dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 3 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=65536, device=/dev/sde1 --------------------------------------------------------- csum 0xaa2b7d21 [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid 3458b150-02a7-44a5-81e5-61a734e30439 dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 4 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=67108864, device=/dev/sde1 --------------------------------------------------------- csum 0x0a4a55ef [match] bytenr 67108864 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid 3458b150-02a7-44a5-81e5-61a734e30439 dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 4 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=65536, device=/dev/sdf1 --------------------------------------------------------- csum 0x1ad4ce81 [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid c292e6f4-d113-47af-96bf-1b262ef28c77 dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 5 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=67108864, device=/dev/sdf1 --------------------------------------------------------- csum 0xbab5e64f [match] bytenr 67108864 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid c292e6f4-d113-47af-96bf-1b262ef28c77 dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 5 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=65536, device=/dev/sdg1 --------------------------------------------------------- csum 0xa5a6757e [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid 094d2a3c-f538-4a4e-850a-e611f2517e7f dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 6 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 superblock: bytenr=67108864, device=/dev/sdg1 --------------------------------------------------------- csum 0x05c75db0 [match] bytenr 67108864 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 2832346e-0720-499f-8239-355534e5721b label generation 15529 root 28539699200 sys_array_size 257 chunk_root_generation 15524 root_level 0 chunk_root 28416425984 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 49453105152 bytes_used 9239322624 sectorsize 4096 nodesize 16384 leafsize 16384 stripesize 4096 root_dir 6 num_devices 6 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0xe1 ( MIXED_BACKREF | BIG_METADATA | EXTENDED_IREF | RAID56 ) csum_type 0 csum_size 4 cache_generation 15529 uuid_tree_generation 15529 dev_item.uuid 094d2a3c-f538-4a4e-850a-e611f2517e7f dev_item.fsid 2832346e-0720-499f-8239-355534e5721b [match] dev_item.type 0 dev_item.total_bytes 8242184192 dev_item.bytes_used 3305111552 dev_item.io_align 4096 dev_item.io_width 4096 dev_item.sector_size 4096 dev_item.devid 6 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 28416409600) chunk length 67108864 owner 2 stripe_len 65536 type SYSTEM|RAID6 num_stripes 6 stripe 0 devid 5 offset 303038464 dev uuid: c292e6f4-d113-47af-96bf-1b262ef28c77 stripe 1 devid 4 offset 1048576 dev uuid: 3458b150-02a7-44a5-81e5-61a734e30439 stripe 2 devid 3 offset 1074790400 dev uuid: a1ae2083-2730-4611-b019-ba9954c8fa13 stripe 3 devid 2 offset 1074790400 dev uuid: 9a1af441-88fc-43b1-b1f8-e1d1163195ef stripe 4 devid 6 offset 1074790400 dev uuid: 094d2a3c-f538-4a4e-850a-e611f2517e7f stripe 5 devid 1 offset 1074790400 dev uuid: c14fb599-f515-4feb-a458-227af0af683b backup_roots[4]: backup 0: backup_tree_root: 28541386752 gen: 15526 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28541403136 gen: 15526 level: 1 backup_fs_root: 28496560128 gen: 15514 level: 2 backup_dev_root: 28540829696 gen: 15524 level: 0 backup_csum_root: 28541452288 gen: 15526 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9164218368 backup_num_devices: 6 backup 1: backup_tree_root: 28502654976 gen: 15527 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28513714176 gen: 15528 level: 1 backup_fs_root: 28513566720 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28513615872 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9206489088 backup_num_devices: 6 backup 2: backup_tree_root: 28538421248 gen: 15528 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28538028032 gen: 15528 level: 1 backup_fs_root: 28537700352 gen: 15528 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28537864192 gen: 15528 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 backup 3: backup_tree_root: 28539699200 gen: 15529 level: 0 backup_chunk_root: 28416425984 gen: 15524 level: 0 backup_extent_root: 28539420672 gen: 15529 level: 1 backup_fs_root: 28539109376 gen: 15529 level: 2 backup_dev_root: 28513550336 gen: 15527 level: 0 backup_csum_root: 28539289600 gen: 15529 level: 2 backup_total_bytes: 49453105152 backup_bytes_used: 9239322624 backup_num_devices: 6 --snip--- ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-29 20:19 ` Waxhead @ 2015-12-30 4:22 ` Chris Murphy 2015-12-30 18:31 ` Waxhead 0 siblings, 1 reply; 23+ messages in thread From: Chris Murphy @ 2015-12-30 4:22 UTC (permalink / raw) To: Waxhead; +Cc: Chris Murphy, Btrfs BTRFS Well all the generations on all devices are now the same, and so are the chunk trees. I haven't looked at them in detail to see if there are any discrepancies among them. If you don't care much for this file system, then you could try btrfs check --repair, using btrfs-progs 4.3.1 or integration branch. I have no idea where btrfsck repair is at with raid56. On the one hand, corruption should be fixed by scrub. But scrub fails with a kernel trace. Maybe btrfs check --repair can fix the tree block corruption since scrub can't, and then if that corruption is fixed, possibly scrub will work. Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-30 4:22 ` Chris Murphy @ 2015-12-30 18:31 ` Waxhead 2015-12-30 19:08 ` Waxhead 0 siblings, 1 reply; 23+ messages in thread From: Waxhead @ 2015-12-30 18:31 UTC (permalink / raw) To: Chris Murphy; +Cc: Btrfs BTRFS Chris Murphy wrote: > Well all the generations on all devices are now the same, and so are > the chunk trees. I haven't looked at them in detail to see if there > are any discrepancies among them. > > If you don't care much for this file system, then you could try btrfs > check --repair, using btrfs-progs 4.3.1 or integration branch. I have > no idea where btrfsck repair is at with raid56. > > On the one hand, corruption should be fixed by scrub. But scrub fails > with a kernel trace. Maybe btrfs check --repair can fix the tree block > corruption since scrub can't, and then if that corruption is fixed, > possibly scrub will work. > I could not care less about this particular filesystem as I wrote in the original post. It's just for having some fun with btrfs. What I find troublesome is that corrupting one (or even two) drives in a Raid6 config fails. Granted the filesystem "works" e.g. I can mount it and access files, but I get a input/output error on a file on this filesystem and btrfs only shows warning (not errors) on device sdg1 where the csum failed. A raid6 setup should work fine even if two missing disks (or in this case chunks of data) is missing and even if I don't care about this filesystem I care about btrfs getting stable ;) so if I can help I'll keep this filesystem around for a little longer! ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-30 18:31 ` Waxhead @ 2015-12-30 19:08 ` Waxhead 0 siblings, 0 replies; 23+ messages in thread From: Waxhead @ 2015-12-30 19:08 UTC (permalink / raw) To: Chris Murphy; +Cc: Btrfs BTRFS Waxhead wrote: > Chris Murphy wrote: >> Well all the generations on all devices are now the same, and so are >> the chunk trees. I haven't looked at them in detail to see if there >> are any discrepancies among them. >> >> If you don't care much for this file system, then you could try btrfs >> check --repair, using btrfs-progs 4.3.1 or integration branch. I have >> no idea where btrfsck repair is at with raid56. >> >> On the one hand, corruption should be fixed by scrub. But scrub fails >> with a kernel trace. Maybe btrfs check --repair can fix the tree block >> corruption since scrub can't, and then if that corruption is fixed, >> possibly scrub will work. >> > I could not care less about this particular filesystem as I wrote in > the original post. It's just for having some fun with btrfs. What I > find troublesome is that corrupting one (or even two) drives in a > Raid6 config fails. Granted the filesystem "works" e.g. I can mount it > and access files, but I get a input/output error on a file on this > filesystem and btrfs only shows warning (not errors) on device sdg1 > where the csum failed. > A raid6 setup should work fine even if two missing disks (or in this > case chunks of data) is missing and even if I don't care about this > filesystem I care about btrfs getting stable ;) so if I can help I'll > keep this filesystem around for a little longer! > For your information I tried a balance on the filesystem - a new stack trace below (the system is still working). Sorry for flooding the mailinglist with the stack trace - this is what I got from dmesg , hope it is of some use... / gets used... :) [ 243.603661] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.603664] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.603676] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.603687] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.603697] 00000078 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.603699] Call Trace: [ 243.603716] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.603724] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.603763] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.603798] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.603806] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.603837] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.603877] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.603889] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.603930] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.603969] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.604003] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.604110] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.604152] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.604198] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.604242] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.604282] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.604326] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.604338] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.604345] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.604391] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.604430] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.604437] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.604443] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.604453] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.604460] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.604468] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.604476] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.604520] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.604527] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.604534] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.604542] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.604549] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.604557] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.604563] ---[ end trace eb3e6200cba2a564 ]--- [ 243.604654] ------------[ cut here ]------------ [ 243.604695] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.604813] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.604837] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.604847] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.604849] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.604862] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.604873] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.604885] Call Trace: [ 243.604898] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.604905] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.604943] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.604975] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.604982] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.605014] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.605053] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.605064] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.605105] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.605145] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.605179] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.605224] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.605270] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.605312] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.605353] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.605397] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.605439] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.605449] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.605456] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.605498] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.605537] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.605547] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.605553] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.605562] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.605569] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.605576] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.605584] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.605627] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.605634] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.605641] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.605650] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.605657] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.605664] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.605669] ---[ end trace eb3e6200cba2a565 ]--- [ 243.605717] ------------[ cut here ]------------ [ 243.605757] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.605866] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.605889] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.605897] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.605899] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.605911] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.605923] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.605937] 0000007a eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.605938] Call Trace: [ 243.605949] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.605956] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.605994] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.606030] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.606037] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.606069] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.606106] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.606117] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.606157] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.606200] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.606235] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.606276] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.606321] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.606368] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.606411] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.606450] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.606493] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.606504] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.606511] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.606556] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.606595] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.606602] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.606608] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.606617] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.606624] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.606632] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.606639] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.606682] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.606689] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.606696] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.606704] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.606710] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.606718] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.606722] ---[ end trace eb3e6200cba2a566 ]--- [ 243.625448] ------------[ cut here ]------------ [ 243.625496] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.625624] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.625654] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.625664] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.625666] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.625680] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.625692] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.625702] 0000001e eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.625704] Call Trace: [ 243.625720] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.625728] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.625767] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.625800] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.625809] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.625844] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.625885] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.625896] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.625936] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.625974] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.626012] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.626060] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.626102] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.626143] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.626188] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.626234] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.626274] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.626285] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.626291] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.626335] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.626380] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.626388] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.626395] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.626404] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.626410] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.626419] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.626428] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.626471] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.626479] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.626487] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.626494] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.626501] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.626509] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.626514] ---[ end trace eb3e6200cba2a567 ]--- [ 243.643463] ------------[ cut here ]------------ [ 243.643510] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.643638] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.643665] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.643674] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.643677] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.643691] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.643701] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.643716] 00000025 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.643718] Call Trace: [ 243.643734] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.643743] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.643782] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.643818] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.643826] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.643858] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.643898] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.643910] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.643951] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.643990] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.644022] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.644098] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.644143] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.644184] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.644225] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.644269] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.644314] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.644324] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.644331] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.644371] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.644410] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.644419] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.644426] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.644435] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.644442] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.644450] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.644458] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.644502] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.644510] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.644517] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.644525] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.644532] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.644542] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.644547] ---[ end trace eb3e6200cba2a568 ]--- [ 243.644698] ------------[ cut here ]------------ [ 243.644739] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.644854] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.644878] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.644887] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.644890] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.644902] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.644913] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.644924] 00000038 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.644925] Call Trace: [ 243.644937] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.644944] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.644978] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.645015] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.645023] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.645059] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.645099] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.645109] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.645149] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.645192] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.645228] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.645270] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.645313] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.645360] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.645404] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.645444] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.645487] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.645497] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.645504] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.645550] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.645589] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.645596] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.645602] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.645611] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.645617] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.645625] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.645633] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.645677] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.645684] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.645691] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.645699] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.645706] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.645714] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.645718] ---[ end trace eb3e6200cba2a569 ]--- [ 243.647013] ------------[ cut here ]------------ [ 243.647053] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.647164] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.647187] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.647195] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.647201] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.647214] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.647224] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.647235] 00000075 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.647237] Call Trace: [ 243.647248] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.647255] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.647294] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.647327] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.647334] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.647365] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.647405] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.647416] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.647457] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.647496] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.647531] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.647576] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.647621] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.647664] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.647705] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.647748] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.647793] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.647803] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.647810] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.647850] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.647889] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.647898] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.647904] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.647913] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.647919] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.647928] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.647936] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.647980] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.647988] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.647995] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.648002] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.648043] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.648051] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.648057] ---[ end trace eb3e6200cba2a56a ]--- [ 243.648139] ------------[ cut here ]------------ [ 243.648181] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.648292] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.648315] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.648324] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.648326] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.648342] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.648353] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.648363] 00000078 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.648365] Call Trace: [ 243.648376] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.648383] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.648421] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.648456] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.648463] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.648495] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.648534] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.648545] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.648586] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.648625] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.648659] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.648704] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.648749] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.648791] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.648832] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.648876] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.648921] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.648930] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.648937] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.648976] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.649016] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.649025] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.649031] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.649040] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.649046] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.649054] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.649062] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.649105] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.649112] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.649119] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.649128] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.649135] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.649142] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.649147] ---[ end trace eb3e6200cba2a56b ]--- [ 243.649514] ------------[ cut here ]------------ [ 243.649551] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.649661] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.649683] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.649691] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.649694] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.649708] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.649719] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.649729] 00000006 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.649731] Call Trace: [ 243.649742] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.649749] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.649787] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.649821] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.649828] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.649859] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.649899] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.649910] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.649950] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.649992] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.650027] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.650072] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.650117] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.650159] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.650201] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.650244] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.650289] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.650299] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.650306] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.650345] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.650384] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.650393] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.650400] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.650409] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.650415] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.650423] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.650430] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.650474] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.650481] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.650488] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.650496] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.650503] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.650509] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.650514] ---[ end trace eb3e6200cba2a56c ]--- [ 243.650681] ------------[ cut here ]------------ [ 243.650721] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.650831] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.650855] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.650862] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.650865] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.650877] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.650888] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.650897] 00000009 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.650899] Call Trace: [ 243.650909] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.650918] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.650955] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.650992] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.650999] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.651033] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.651070] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.651081] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.651121] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.651164] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.651199] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.651240] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.651284] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.651331] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.651374] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.651413] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.651457] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.651467] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.651474] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.651520] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.651558] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.651565] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.651571] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.651580] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.651587] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.651595] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.651603] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.651646] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.651653] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.651660] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.651667] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.651674] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.651682] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.651688] ---[ end trace eb3e6200cba2a56d ]--- [ 243.662959] ------------[ cut here ]------------ [ 243.663002] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.663129] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.663159] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.663169] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.663173] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.663186] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.663198] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.663208] 00000054 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.663210] Call Trace: [ 243.663226] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.663234] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.663271] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.663304] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.663313] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.663348] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.663390] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.663401] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.663439] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.663477] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.663514] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.663563] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.663604] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.663644] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.663689] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.663735] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.663776] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.663787] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.663793] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.663837] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.663883] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.663890] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.663897] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.663908] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.663914] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.663923] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.663932] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.663975] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.663984] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.663991] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.663999] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.664005] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.664062] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.664068] ---[ end trace eb3e6200cba2a56e ]--- [ 243.664145] ------------[ cut here ]------------ [ 243.664184] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.664299] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.664323] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.664332] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.664334] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.664349] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.664360] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.664371] 00000055 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.664372] Call Trace: [ 243.664384] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.664392] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.664430] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.664465] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.664472] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.664504] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.664544] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.664555] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.664596] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.664635] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.664668] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.664713] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.664759] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.664800] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.664841] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.664885] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.664930] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.664939] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.664946] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.664985] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.665023] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.665033] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.665039] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.665049] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.665055] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.665063] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.665071] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.665115] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.665123] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.665130] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.665138] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.665145] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.665152] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.665157] ---[ end trace eb3e6200cba2a56f ]--- [ 243.665538] ------------[ cut here ]------------ [ 243.665574] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.665687] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.665714] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.665721] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.665724] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.665736] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.665747] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.665757] 0000005f eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.665759] Call Trace: [ 243.665770] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.665777] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.665814] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.665849] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.665851] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.665857] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.665889] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.665927] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.665929] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.665937] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.665972] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.666010] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.666012] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.666043] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.666084] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.666123] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.666125] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.666162] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.666202] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.666243] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.666245] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.666281] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.666290] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.666296] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.666336] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.666338] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.666375] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.666381] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.666387] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.666397] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.666404] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.666411] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.666419] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.666457] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.666459] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.666465] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.666472] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.666479] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.666486] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.666494] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.666496] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.666499] ---[ end trace eb3e6200cba2a570 ]--- [ 243.666551] ------------[ cut here ]------------ [ 243.666588] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.666694] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.666718] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.666726] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.666729] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.666742] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.666752] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.666762] 00000060 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.666764] Call Trace: [ 243.666778] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.666785] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.666825] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.666860] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.666868] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.666902] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.666942] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.666954] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.666993] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.667035] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.667072] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.667119] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.667161] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.667207] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.667253] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.667295] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.667336] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.667347] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.667355] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.667398] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.667440] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.667448] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.667455] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.667464] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.667471] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.667479] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.667487] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.667530] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.667537] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.667544] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.667552] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.667559] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.667567] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.667573] ---[ end trace eb3e6200cba2a571 ]--- [ 243.667637] ------------[ cut here ]------------ [ 243.667676] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.667712] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp [ 243.667713] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.667821] pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.667830] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.667832] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.667845] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.667856] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.667866] 00000061 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.667868] Call Trace: [ 243.667881] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.667889] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.667930] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.667966] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.667974] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.668010] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.668093] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.668104] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.668143] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.668183] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.668219] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.668265] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.668308] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.668354] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.668400] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.668443] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.668486] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.668498] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.668505] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.668547] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.668591] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.668599] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.668605] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.668614] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.668620] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.668628] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.668636] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.668678] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.668685] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.668692] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.668702] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.668708] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.668716] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.668722] ---[ end trace eb3e6200cba2a572 ]--- [ 243.668791] ------------[ cut here ]------------ [ 243.668833] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.668879] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops [ 243.668880] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.668980] videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.668989] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.668991] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.669003] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.669014] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.669024] 00000062 eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.669025] Call Trace: [ 243.669039] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.669047] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.669086] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.669123] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.669131] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.669166] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.669207] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.669218] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.669257] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.669298] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.669335] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.669381] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.669425] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.669471] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.669516] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.669560] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.669603] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.669614] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.669622] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.669666] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.669710] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.669717] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.669723] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.669732] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.669738] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.669746] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.669755] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.669797] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.669805] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.669812] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.669820] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.669827] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.669835] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.669841] ---[ end trace eb3e6200cba2a573 ]--- [ 243.669892] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.670194] ------------[ cut here ]------------ [ 243.670236] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.670355] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.670381] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.670391] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.670394] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.670407] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.670418] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.670429] 0000006b eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.670431] Call Trace: [ 243.670445] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.670454] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.670494] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.670528] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.670536] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.670572] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.670613] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.670623] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.670662] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.670702] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.670739] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.670783] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.670828] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.670871] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.670913] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.670916] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.670953] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.670991] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.671001] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.671008] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.671046] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.671086] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.671088] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.671094] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.671100] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.671109] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.671116] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.671124] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.671126] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.671132] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.671170] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.671177] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.671184] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.671193] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.671195] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.671200] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.671208] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.671213] ---[ end trace eb3e6200cba2a574 ]--- [ 243.671230] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.671279] ------------[ cut here ]------------ [ 243.671317] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.671432] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.671457] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.671466] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.671469] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.671482] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.671493] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.671505] 0000006c eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.671507] Call Trace: [ 243.671519] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.671527] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.671566] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.671602] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.671608] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.671643] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.671684] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.671696] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.671736] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.671778] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.671816] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.671861] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.671905] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.671950] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.671995] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.672026] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.672156] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.672168] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.672175] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.672220] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.672259] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.672266] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.672272] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.672281] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.672287] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.672295] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.672297] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.672304] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.672342] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.672349] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.672357] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.672366] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.672368] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.672373] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.672380] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.672387] ---[ end trace eb3e6200cba2a575 ]--- [ 243.672403] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.672456] ------------[ cut here ]------------ [ 243.672493] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.672610] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.672636] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.672646] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.672649] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.672662] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.672673] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.672684] 0000006d eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.672686] Call Trace: [ 243.672700] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.672708] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.672747] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.672783] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.672789] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.672823] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.672864] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.672876] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.672917] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.672960] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.672997] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.673043] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.673087] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.673131] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.673176] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.673220] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.673262] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.673273] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.673281] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.673324] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.673365] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.673373] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.673380] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.673389] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.673396] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.673403] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.673411] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.673455] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.673462] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.673469] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.673477] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.673483] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.673490] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.673497] ---[ end trace eb3e6200cba2a576 ]--- [ 243.673513] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.673563] ------------[ cut here ]------------ [ 243.673602] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.673718] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.673744] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.673754] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.673756] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.673770] 00000000 09f7a8eb eef57990 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.673781] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8b18 00000000 [ 243.673792] 0000006e eef579a0 c1066962 00000009 00000000 eef57a6c f86350ff 00000000 [ 243.673794] Call Trace: [ 243.673807] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.673815] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.673854] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.673890] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.673896] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.673931] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.673972] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.673983] [<c12d4f2e>] ? __percpu_counter_add+0x8e/0xb0 [ 243.674024] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.674065] [<f86520cc>] ? btrfs_should_end_transaction+0x3c/0x60 [btrfs] [ 243.674104] [<f863b276>] ? btrfs_drop_snapshot+0x426/0x850 [btrfs] [ 243.674150] [<f86ae67e>] ? merge_reloc_roots+0xee/0x260 [btrfs] [ 243.674193] [<f86a9777>] ? remove_backref_node+0x67/0xe0 [btrfs] [ 243.674237] [<f86aea7f>] ? relocate_block_group+0x28f/0x750 [btrfs] [ 243.674283] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.674326] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.674369] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.674380] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.674387] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.674431] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.674475] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.674482] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.674489] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.674497] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.674503] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.674511] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.674518] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.674520] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.674557] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.674564] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.674571] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.674578] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.674585] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.674593] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.674596] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 243.674599] ---[ end trace eb3e6200cba2a577 ]--- [ 243.684117] ------------[ cut here ]------------ [ 243.684172] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.684186] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.684538] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.684585] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.684593] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.684601] 00000000 09f7a8eb eef579d8 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.684620] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8bf8 00000000 [ 243.684639] 000000aa eef579e8 c1066962 00000009 00000000 eef57ab4 f86350ff 00000000 [ 243.684657] Call Trace: [ 243.684676] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.684689] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.684731] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.684770] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.684782] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.684821] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.684865] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.684880] [<c10cfeaa>] ? ktime_get+0x4a/0x120 [ 243.684895] [<c109d23b>] ? pick_next_task_fair+0x41b/0x4c0 [ 243.684906] [<c10cb0fb>] ? hrtimer_interrupt+0xbb/0x1a0 [ 243.684947] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.684992] [<f865271c>] ? btrfs_commit_transaction+0x4c/0xe70 [btrfs] [ 243.685035] [<f86535bd>] ? start_transaction+0x7d/0x5b0 [btrfs] [ 243.685049] [<c1532aa8>] ? preempt_schedule_common+0x18/0x30 [ 243.685060] [<c1532ae5>] ? _cond_resched+0x25/0x30 [ 243.685109] [<f86aeae2>] ? relocate_block_group+0x2f2/0x750 [btrfs] [ 243.685156] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.685205] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.685252] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.685273] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.685292] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.685339] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.685388] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.685405] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.685425] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.685442] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.685458] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.685478] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.685497] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.685547] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.685563] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.685580] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.685597] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.685613] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.685630] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.685644] ---[ end trace eb3e6200cba2a578 ]--- [ 243.685702] ------------[ cut here ]------------ [ 243.685747] WARNING: CPU: 0 PID: 1182 at /build/linux-P8Ifgy/linux-4.3.3/fs/btrfs/extent-tree.c:6410 __btrfs_free_extent+0xbbf/0xec0 [btrfs]() [ 243.685762] Modules linked in: cpufreq_stats cpufreq_conservative cpufreq_userspace bnep cpufreq_powersave zram zsmalloc lz4_compress nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc joydev iTCO_wdt iTCO_vendor_support sparse_keymap arc4 acerhdf coretemp pcspkr evdev psmouse serio_raw i2c_i801 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media lpc_ich mfd_core btusb btrtl btbcm btintel rng_core bluetooth ath5k ath snd_hda_codec_realtek snd_hda_codec_generic mac80211 jmb38x_ms snd_hda_intel i915 cfg80211 memstick snd_hda_codec rfkill snd_hda_core snd_hwdep drm_kms_helper snd_pcm snd_timer shpchp snd soundcore drm i2c_algo_bit wmi battery video ac button acpi_cpufreq processor sg loop autofs4 uas usb_storage ext4 crc16 mbcache jbd2 crc32c_generic btrfs xor [ 243.685928] raid6_pq md_mod sd_mod ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci ehci_hcd sdhci_pci usbcore sdhci usb_common mmc_core r8169 mii [ 243.685969] CPU: 0 PID: 1182 Comm: btrfs Tainted: G W 4.3.0-1-686-pae #1 Debian 4.3.3-2 [ 243.685976] Hardware name: Acer AOA150/ , BIOS v0.3310 10/06/2008 [ 243.685983] 00000000 09f7a8eb eef579d8 c12ae3c5 00000000 c106685d c1614e20 00000000 [ 243.686001] 0000049e f86df010 0000190a f86350ff 00000009 f86350ff f1dd8bf8 00000000 [ 243.686019] 0000003d eef579e8 c1066962 00000009 00000000 eef57ab4 f86350ff 00000000 [ 243.686037] Call Trace: [ 243.686051] [<c12ae3c5>] ? dump_stack+0x3e/0x59 [ 243.686063] [<c106685d>] ? warn_slowpath_common+0x8d/0xc0 [ 243.686104] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.686143] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.686155] [<c1066962>] ? warn_slowpath_null+0x22/0x30 [ 243.686195] [<f86350ff>] ? __btrfs_free_extent+0xbbf/0xec0 [btrfs] [ 243.686239] [<f86394ae>] ? __btrfs_run_delayed_refs+0x96e/0x11a0 [btrfs] [ 243.686253] [<c10cfeaa>] ? ktime_get+0x4a/0x120 [ 243.686269] [<c109d23b>] ? pick_next_task_fair+0x41b/0x4c0 [ 243.686279] [<c10cb0fb>] ? hrtimer_interrupt+0xbb/0x1a0 [ 243.686321] [<f863caed>] ? btrfs_run_delayed_refs+0x6d/0x250 [btrfs] [ 243.686365] [<f865271c>] ? btrfs_commit_transaction+0x4c/0xe70 [btrfs] [ 243.686409] [<f86535bd>] ? start_transaction+0x7d/0x5b0 [btrfs] [ 243.686420] [<c1532aa8>] ? preempt_schedule_common+0x18/0x30 [ 243.686439] [<c1532ae5>] ? _cond_resched+0x25/0x30 [ 243.686487] [<f86aeae2>] ? relocate_block_group+0x2f2/0x750 [btrfs] [ 243.686535] [<f86af118>] ? btrfs_relocate_block_group+0x1d8/0x2e0 [btrfs] [ 243.686582] [<f8681bcd>] ? btrfs_relocate_chunk.isra.29+0x3d/0xf0 [btrfs] [ 243.686629] [<f868357c>] ? btrfs_balance+0x97c/0x12e0 [btrfs] [ 243.686649] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.686668] [<c1154c5d>] ? get_page_from_freelist+0x3dd/0x5c0 [ 243.686714] [<f8690c05>] ? btrfs_ioctl_balance+0x385/0x390 [btrfs] [ 243.686761] [<f86931f3>] ? btrfs_ioctl+0x793/0x2c50 [btrfs] [ 243.686777] [<c115505b>] ? __alloc_pages_nodemask+0x13b/0x850 [ 243.686793] [<c11b5349>] ? terminate_walk+0x69/0xc0 [ 243.686809] [<c1182edf>] ? anon_vma_prepare+0xdf/0x130 [ 243.686828] [<c118218c>] ? page_add_new_anon_rmap+0x6c/0x90 [ 243.686848] [<c1179823>] ? handle_mm_fault+0xa63/0x14f0 [ 243.686864] [<c12b45c3>] ? __rb_insert_augmented+0xf3/0x1c0 [ 243.686911] [<f8692a60>] ? update_ioctl_balance_args+0x1c0/0x1c0 [btrfs] [ 243.686928] [<c11be382>] ? do_vfs_ioctl+0x2e2/0x500 [ 243.686944] [<c117e6f3>] ? do_brk+0x113/0x2b0 [ 243.686964] [<c1058900>] ? __do_page_fault+0x1a0/0x460 [ 243.686981] [<c11be608>] ? SyS_ioctl+0x68/0x80 [ 243.686997] [<c1536257>] ? sysenter_do_call+0x12/0x12 [ 243.687011] ---[ end trace eb3e6200cba2a579 ]--- [ 243.700346] systemd-journald[228]: /dev/kmsg buffer overrun, some messages lost. [ 247.003571] perf interrupt took too long (2531 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 2:04 ` Waxhead 2015-12-28 2:18 ` Chris Murphy @ 2015-12-28 4:02 ` Duncan 2015-12-28 21:17 ` Waxhead 1 sibling, 1 reply; 23+ messages in thread From: Duncan @ 2015-12-28 4:02 UTC (permalink / raw) To: linux-btrfs Waxhead posted on Mon, 28 Dec 2015 03:04:33 +0100 as excerpted: > Duncan wrote: >> Waxhead posted on Mon, 28 Dec 2015 00:06:46 +0100 as excerpted: >> >>> btrfs scrub status /mnt >>> scrub status for 2832346e-0720-499f-8239-355534e5721b >>> scrub started at Sun Mar 29 23:21:04 2015 >>> Now here is the first worrying part... it says that scrub started at >>> Sun Mar 29. >> Hmm... The status is stored in readable plain-text files in /var/lib/ >> btrfs/scrub.status.*, where the * is the UUID. If you check there, the >> start time (t_start) seems to be in POSIX time. >> >> Is it possible you were or are running the scrub from, for instance, a >> rescue image that might not set the system time correctly and that >> falls back to, say, the date the rescue image was created, if it can't >> get network connectivity or some such? >> > No I don't think so.... > > # ls -la > /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b > -rw------- 1 root root 2315 Mar 29 2015 > /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b > > # cat /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b > scrub status:1 > 2832346e-0720-499f-8239-355534e5721b:1|[...]|t_start:1427664064|[...] > > # date Mon Dec 28 02:54:11 CET 2015 > > Just to clear up any possible misunderstandings. I run this from a > simple netbook, and I have no idea why the date is off by so much. Well, both the file time and the unix time in the file say back in March, so whatever time syncing mechanism you use on that netbook, it evidently failed the boot you did that scrub. > Note: I have used the same USB drives (memory sticks really) to create > various configs of btrfs filesystems earlier. Could it be old metadata > in the filesystem that mess up things? Is not metadata stamped with the > UUID of the filesystem to prevent such things? Yes, metadata is stamped with UUID. But one other possible explanation for the scrub time back in March might be if you were already playing with it back then, and somehow you have a USB stick with a filesystem from back then that... somehow... has the same UUID as the one you're experimenting on today. Don't ask me how it could get the same UUID. I don't understand it either. But if it did somehow happen, btrfs would be /very/ confused, and crashing scrubs and further data corruption could certainly result. Of course if you weren't experimenting with btrfs on these devices back at the end of March and there's absolutely no way they could have gotten btrfs on them until say October or whenever, then we're back to the date somehow being wrong for that scrub, and having to look elsewhere for why scrub is crashing. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 4:02 ` Duncan @ 2015-12-28 21:17 ` Waxhead 2015-12-28 21:50 ` Chris Murphy 0 siblings, 1 reply; 23+ messages in thread From: Waxhead @ 2015-12-28 21:17 UTC (permalink / raw) To: Duncan, linux-btrfs Duncan wrote: > Waxhead posted on Mon, 28 Dec 2015 03:04:33 +0100 as excerpted: > >> Duncan wrote: >>> Waxhead posted on Mon, 28 Dec 2015 00:06:46 +0100 as excerpted: >>> >>>> btrfs scrub status /mnt >>>> scrub status for 2832346e-0720-499f-8239-355534e5721b >>>> scrub started at Sun Mar 29 23:21:04 2015 >>>> Now here is the first worrying part... it says that scrub started at >>>> Sun Mar 29. >>> Hmm... The status is stored in readable plain-text files in /var/lib/ >>> btrfs/scrub.status.*, where the * is the UUID. If you check there, the >>> start time (t_start) seems to be in POSIX time. >>> >>> Is it possible you were or are running the scrub from, for instance, a >>> rescue image that might not set the system time correctly and that >>> falls back to, say, the date the rescue image was created, if it can't >>> get network connectivity or some such? >>> >> No I don't think so.... >> >> # ls -la >> /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b >> -rw------- 1 root root 2315 Mar 29 2015 >> /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b >> >> # cat /var/lib/btrfs/scrub.status.2832346e-0720-499f-8239-355534e5721b >> scrub status:1 >> 2832346e-0720-499f-8239-355534e5721b:1|[...]|t_start:1427664064|[...] >> >> # date Mon Dec 28 02:54:11 CET 2015 >> >> Just to clear up any possible misunderstandings. I run this from a >> simple netbook, and I have no idea why the date is off by so much. > Well, both the file time and the unix time in the file say back in March, > so whatever time syncing mechanism you use on that netbook, it evidently > failed the boot you did that scrub. > The netbook is set up with NTP with pfSense as a host server. The pfSense is itself synched with multiple pools. >> Note: I have used the same USB drives (memory sticks really) to create >> various configs of btrfs filesystems earlier. Could it be old metadata >> in the filesystem that mess up things? Is not metadata stamped with the >> UUID of the filesystem to prevent such things? > Yes, metadata is stamped with UUID. But one other possible explanation > for the scrub time back in March might be if you were already playing > with it back then, and somehow you have a USB stick with a filesystem > from back then that... somehow... has the same UUID as the one you're > experimenting on today. yes, I have played around with these usb sticks for a long time. Probably also before march 29. > > Don't ask me how it could get the same UUID. I don't understand it > either. But if it did somehow happen, btrfs would be /very/ confused, > and crashing scrubs and further data corruption could certainly result. What if my use of dd accidentally trashed some important part of the new filesystem and btrfs therefore thinks a older version of the filesystem is the current one? If UUID's are in every metadatablock I find that pretty hard to believe. What if the UUID==0 ? is this accounted for? > Of course if you weren't experimenting with btrfs on these devices back > at the end of March and there's absolutely no way they could have gotten > btrfs on them until say October or whenever, then we're back to the date > somehow being wrong for that scrub, and having to look elsewhere for why > scrub is crashing. > No, by all means - I tried a lot of weird stuff on those usb sticks way before march so they defiantly had a (multi disk) btrfs filesystem on them before. ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 21:17 ` Waxhead @ 2015-12-28 21:50 ` Chris Murphy 0 siblings, 0 replies; 23+ messages in thread From: Chris Murphy @ 2015-12-28 21:50 UTC (permalink / raw) To: Waxhead; +Cc: Duncan, Btrfs BTRFS On Mon, Dec 28, 2015 at 2:17 PM, Waxhead <waxhead@online.no> wrote: > What if my use of dd accidentally trashed some important part of the new > filesystem and btrfs therefore thinks a older version of the filesystem is > the current one? If UUID's are in every metadatablock I find that pretty > hard to believe. Each leaf has the fsuuid in it. I'm not sure if it also has the devi_item.uuid or if that's only in the supers. But in any case the fsid is strewn throughout metadata expressly to make sure it doesn't get confused if it runs across stale metadata from a previous system. XFS v5 metadata does this also, although I have no idea how it's implemented compared to Btrfs. >What if the UUID==0 ? is this accounted for? Yes, this is a nil uuid. >> Of course if you weren't experimenting with btrfs on these devices back >> at the end of March and there's absolutely no way they could have gotten >> btrfs on them until say October or whenever, then we're back to the date >> somehow being wrong for that scrub, and having to look elsewhere for why >> scrub is crashing. >> > No, by all means - I tried a lot of weird stuff on those usb sticks way > before march so they defiantly had a (multi disk) btrfs filesystem on them > before. It shouldn't be a problem. But... These are USB flash drives? Aren't they described as not containing your data at all, but rather a probabilistic representation of your data? Ha. So while it ordinarily returns your data, sometimes it won't. You might check if any of them are counterfeit which will increase the chances of getting crap back from the drive. Check this blog entry and see if either F3 or gnome-multi-writer-probe can help you determine this. Note there's a chance the drives aren't useful after using this tool, so, be ready to be done with this Btrfs volume before proceeding. https://blogs.gnome.org/hughsie/2015/01/28/detecting-fake-flash/ Even if that comes up clean, I'd run badblocks on everyone of those sticks overnight and see if you get any errors. Btrfs *probably* ought to deal with a handful of errors. But if you were to get really unlucky and have a couple of errors at the same time as your induced corruption error, that's effectively three missing devices (for that read stripe). For badblocks, something like -vsw looks good; note that this is destructive and it will take a while (multiple passes, multiple patterns, writes then reads for each for the entire drive). -- Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-27 18:29 ` Chris Murphy 2015-12-27 23:06 ` Waxhead @ 2015-12-28 0:39 ` Christoph Anton Mitterer 2015-12-28 0:58 ` Chris Murphy 1 sibling, 1 reply; 23+ messages in thread From: Christoph Anton Mitterer @ 2015-12-28 0:39 UTC (permalink / raw) To: Btrfs BTRFS [-- Attachment #1: Type: text/plain, Size: 552 bytes --] On Sun, 2015-12-27 at 11:29 -0700, Chris Murphy wrote: > then the scrub request is effectively a > scrub for a volume with a missing drive which you probably wouldn't > ever do, you'd first replace the missing device. While that's probably the normal work flow,... it should still work the other way round... and if not, I'd consider that a bug. > but when the drive is > reattached it is not automatically re-added. Which is good, as it would allow for similar attacks as we've recently discussed in the other thread... Cheers, Chris. [-- Attachment #2: smime.p7s --] [-- Type: application/x-pkcs7-signature, Size: 5313 bytes --] ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 0:39 ` Christoph Anton Mitterer @ 2015-12-28 0:58 ` Chris Murphy 2015-12-28 1:09 ` Christoph Anton Mitterer 0 siblings, 1 reply; 23+ messages in thread From: Chris Murphy @ 2015-12-28 0:58 UTC (permalink / raw) To: Christoph Anton Mitterer; +Cc: Btrfs BTRFS On Sun, Dec 27, 2015 at 5:39 PM, Christoph Anton Mitterer <calestyo@scientia.net> wrote: > On Sun, 2015-12-27 at 11:29 -0700, Chris Murphy wrote: >> then the scrub request is effectively a >> scrub for a volume with a missing drive which you probably wouldn't >> ever do, you'd first replace the missing device. > While that's probably the normal work flow,... it should still work the > other way round... and if not, I'd consider that a bug. I think it's more complicated than that. I don't see a good use case for scrubbing a degraded array. First make the array healthy, then scrub. But I've not tested this with mdadm or lvm raid. I don't know how they behave. But even if either of them tolerate it, it's a legitimate design decision for Btrfs developers to refuse supporting the scrub of a degraded array. Same for balancing for that matter. The problem here is, Btrfs itself may not even know the array state is degraded. There's a degraded mount option, but since there's no device faulty state yet, I don't see how it can know to go degraded, at which point it could legitimately refuse to scrub. Of course, the fs should get worse, there shouldn't be a crash, even if degraded scrub isn't supported. -- Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 0:58 ` Chris Murphy @ 2015-12-28 1:09 ` Christoph Anton Mitterer 2015-12-28 1:23 ` Chris Murphy 0 siblings, 1 reply; 23+ messages in thread From: Christoph Anton Mitterer @ 2015-12-28 1:09 UTC (permalink / raw) To: Chris Murphy; +Cc: Btrfs BTRFS [-- Attachment #1: Type: text/plain, Size: 1433 bytes --] On Sun, 2015-12-27 at 17:58 -0700, Chris Murphy wrote: > I don't see a good use case for scrubbing a degraded array. First > make > the array healthy, then scrub. As I've said, I agree basically... but *if* scrubbing a degraded fs leads to even more errors (apart from the fact that you may loose another device for hardware reasons while scrubbing), than either this needs to be fixed *or* scrub mustn't be started on a degraded array (in the sense that software prevents it). Consider you have a weekly cron job that scrubs, which runs while the array is degraded. > But I've not tested this with mdadm or > lvm raid. I don't know how they behave. Don't know, but for them it makes not so much sense, as their scrub is different from ours... they have no checksums and can only tell whether the RAID itself is consistent, which it is of course not when degraded. It does perhaps make sense in any mirrored RAIDs (e.g. when you have a 4 disk RAID1, which is degraded and 1 disk is missing,... it may still be worth to scrub the remaining 3,...) > But even if either of them > tolerate it, it's a legitimate design decision for Btrfs developers > to > refuse supporting the scrub of a degraded array. Same for balancing > for that matter. Sure... but still it needs to be handled gracefully... i.e. not more damage and reasonable userland output which people will understand. Cheers, Chris. [-- Attachment #2: smime.p7s --] [-- Type: application/x-pkcs7-signature, Size: 5313 bytes --] ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 1:09 ` Christoph Anton Mitterer @ 2015-12-28 1:23 ` Chris Murphy 2015-12-28 1:31 ` Christoph Anton Mitterer 0 siblings, 1 reply; 23+ messages in thread From: Chris Murphy @ 2015-12-28 1:23 UTC (permalink / raw) To: Christoph Anton Mitterer; +Cc: Btrfs BTRFS On Sun, Dec 27, 2015 at 6:09 PM, Christoph Anton Mitterer <calestyo@scientia.net> wrote: > On Sun, 2015-12-27 at 17:58 -0700, Chris Murphy wrote: >> I don't see a good use case for scrubbing a degraded array. First >> make >> the array healthy, then scrub. > As I've said, I agree basically... but *if* scrubbing a degraded fs > leads to even more errors (apart from the fact that you may loose > another device for hardware reasons while scrubbing), than either this > needs to be fixed *or* scrub mustn't be started on a degraded array (in > the sense that software prevents it). > > Consider you have a weekly cron job that scrubs, which runs while the > array is degraded. The scrub should fail gracefully (exit 1). > > >> But I've not tested this with mdadm or >> lvm raid. I don't know how they behave. > Don't know, but for them it makes not so much sense, as their scrub is > different from ours... they have no checksums and can only tell whether > the RAID itself is consistent, which it is of course not when degraded. > It does perhaps make sense in any mirrored RAIDs (e.g. when you have a > 4 disk RAID1, which is degraded and 1 disk is missing,... it may still > be worth to scrub the remaining 3,...) > > >> But even if either of them >> tolerate it, it's a legitimate design decision for Btrfs developers >> to >> refuse supporting the scrub of a degraded array. Same for balancing >> for that matter. > Sure... but still it needs to be handled gracefully... i.e. not more > damage and reasonable userland output which people will understand. Yes. I'd want scrub to immediately fail in a degraded case, because the higher workload added by the scrub itself could cause additional device failures sooner. And that would negatively impact the ability to get the array healthy again with a rebuild - during which time you wouldn't want the scrub running anyway. -- Chris Murphy ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 1:23 ` Chris Murphy @ 2015-12-28 1:31 ` Christoph Anton Mitterer 2015-12-28 2:16 ` Duncan 0 siblings, 1 reply; 23+ messages in thread From: Christoph Anton Mitterer @ 2015-12-28 1:31 UTC (permalink / raw) To: Chris Murphy; +Cc: Btrfs BTRFS [-- Attachment #1: Type: text/plain, Size: 876 bytes --] On Sun, 2015-12-27 at 18:23 -0700, Chris Murphy wrote: > I'd want scrub to immediately fail in a degraded case, because the > higher workload added by the scrub itself could cause additional > device failures sooner. And that would negatively impact the ability > to get the array healthy again with a rebuild - during which time you > wouldn't want the scrub running anyway. I think that should be the default behaviour, yes. Probebly there should be a --force like override switch,... again take my example of classic RAID1 with say 6 disks... (which is right now not possible in btrfs, I know). Now one fails... so it's degraded, but you still have 5 left and you're probably far away from complete loss. OTOH you still may want to scrub your data during during that time (e.g. to catch silent block errors), in that specific scenario. Cheers, Chris. [-- Attachment #2: smime.p7s --] [-- Type: application/x-pkcs7-signature, Size: 5313 bytes --] ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-28 1:31 ` Christoph Anton Mitterer @ 2015-12-28 2:16 ` Duncan 0 siblings, 0 replies; 23+ messages in thread From: Duncan @ 2015-12-28 2:16 UTC (permalink / raw) To: linux-btrfs Christoph Anton Mitterer posted on Mon, 28 Dec 2015 02:31:16 +0100 as excerpted: > On Sun, 2015-12-27 at 18:23 -0700, Chris Murphy wrote: >> I'd want scrub to immediately fail in a degraded case, because the >> higher workload added by the scrub itself could cause additional device >> failures sooner. And that would negatively impact the ability to get >> the array healthy again with a rebuild - during which time you wouldn't >> want the scrub running anyway. > I think that should be the default behaviour, yes. > > Probebly there should be a --force like override switch,... again take > my example of classic RAID1 with say 6 disks... (which is right now not > possible in btrfs, I know). > Now one fails... so it's degraded, but you still have 5 left and you're > probably far away from complete loss. OTOH you still may want to scrub > your data during during that time (e.g. to catch silent block errors), > in that specific scenario. Scrub needs to be able to run on a degraded array (possibly with a --force switch, I've no real opinion on that), for a number of reasons: 1) As mentioned up-thread, btrfs scrub isn't like others; we have checksums and being able to do a global checksum-verify via scrub, even on a degraded array where repair may not be possible, is a legitimate use. 2) With raid6 degraded by loss of only a single device, repair should still be possible (and checksums should counteract the partial-stripe- write hole that parity normally risks, verify the "repair" and don't write it if it still fails checksum). 3) With the coming N-way-mirroring, degraded repair from a good copy of an N-way-mirrored block down to two-way should be possible, and indeed, that'd be the biggest reason to run N-way-mirroring with N>2 in the first place. But regardless, agreed with everyone, simply crashing must be seen as a bug. If it's not going to scrub correctly, it should exit normally but with an error status and printout to STDERR, not crash. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman ^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: Btrfs scrub failure for raid 6 kernel 4.3 2015-12-27 13:59 Btrfs scrub failure for raid 6 kernel 4.3 Waxhead 2015-12-27 18:29 ` Chris Murphy @ 2015-12-28 1:21 ` Duncan 1 sibling, 0 replies; 23+ messages in thread From: Duncan @ 2015-12-28 1:21 UTC (permalink / raw) To: linux-btrfs Waxhead posted on Sun, 27 Dec 2015 14:59:18 +0100 as excerpted: > I have a "toy-array" of 6x USB drives hooked up to a hub where I made a > btrfs raid 6 data+metadata filesystem. Just noting as an aside comment to the main thread... While doing this with a "toy-array" for experimental purposes is fine and indeed encouraged, do your research and LOTS of testing before trying to setup particularly multi-device btrfs over USB for normal use. There have been a number of trouble reports posted for USB connected devices, where the trouble simply vanished when the devices were attached via (e)SATA. Apparently various SATA/USB bridge controllers aren't entirely reliable, a few USB root hubs likewise (tho the bridge-controllers are the most common culprit), and USB itself wasn't really designed for this sort of thing, tho obviously many people use it for attaching storage today. Personally, while I might use btrfs on single-device USB attached storage, I'd be extremely hesitant to do multi-device btrfs via USB, and would definitely test it (VERY!) well before considering it usable if I did, as there's just too many ways multiple USB-attached devices can get out of sync with each other, breaking the filesystem. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman ^ permalink raw reply [flat|nested] 23+ messages in thread
end of thread, other threads:[~2015-12-30 19:08 UTC | newest]
Thread overview: 23+ messages (download: mbox.gz follow: Atom feed
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2015-12-27 13:59 Btrfs scrub failure for raid 6 kernel 4.3 Waxhead
2015-12-27 18:29 ` Chris Murphy
2015-12-27 23:06 ` Waxhead
2015-12-28 1:48 ` Duncan
2015-12-28 2:04 ` Waxhead
2015-12-28 2:18 ` Chris Murphy
2015-12-28 21:08 ` Waxhead
2015-12-28 21:23 ` Chris Murphy
[not found] ` <5681BDD0.1060407@online.no>
2015-12-29 0:29 ` Chris Murphy
2015-12-29 20:19 ` Waxhead
2015-12-30 4:22 ` Chris Murphy
2015-12-30 18:31 ` Waxhead
2015-12-30 19:08 ` Waxhead
2015-12-28 4:02 ` Duncan
2015-12-28 21:17 ` Waxhead
2015-12-28 21:50 ` Chris Murphy
2015-12-28 0:39 ` Christoph Anton Mitterer
2015-12-28 0:58 ` Chris Murphy
2015-12-28 1:09 ` Christoph Anton Mitterer
2015-12-28 1:23 ` Chris Murphy
2015-12-28 1:31 ` Christoph Anton Mitterer
2015-12-28 2:16 ` Duncan
2015-12-28 1:21 ` Duncan
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