Re: read time block corruption on root partition, Not booting

jollemeyer
2019-12-22T10:53:45Z

Dear Qu,

Memtest is still running but did already find failures. I will go for the btrfs check - repair route and reinstall the system in case it screws up my fs. No need to spent more time on this. All important stuff is in backup anyway.

Again, many thanks for your help. You are a hero.

Regards,

Jörg

-----Original Message-----
From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: jollemeyer@gmx.de
Cc: linux-btrfs@vger.kernel.org
Sent: So., 22 Dez. 2019 11:13
Subject: Re: read time block corruption on root partition, Not booting

On 2019/12/22 下午6:03, jollemeyer@gmx.de wrote:
> Dear Qu,
>
> I had a typo in my previous "btrfs dump tree" command (/dev/sda1 instead of /
> dev/sda). Now I got the output below:

No wonder.

>
> btrfs-progs v5.4
> leaf 2089035464704 items 145 free space 4973 generation 75450 owner
> EXTENT_TREE
> leaf 2089035464704 flags 0x1(WRITTEN) backref revision 1
> fs uuid 014bdf0a-bcb3-4a7c-b58d-c1fc17281f7e
> chunk uuid d4aae6e9-9832-4da5-a269-0a46e54a4e33
[...]
> item 85 key (1937096425472 EXTENT_ITEM 4096) itemoff 11725 itemsize
> 53
> refs 1 gen 41267 flags DATA
> extent data backref root FS_TREE objectid 17045 offset
> 212492288 count 1048577

I can't be more proud of the tree-checker, it's always right to catch
memory bit flip.

That extent item has only 1 ref ("refs 1"), but its inlined data ref has
a count of 1048577.

Note that 1048577, it's 0x100001.

It's almost 100% sure it's a bit flip in your memory. A full memtest run
is highly recommended.
Since the extra check is only introduced in v5.4, btrfs didn't detect it
earlier.

If could craft a dirty hack to fix your problem, but it may need some
time (several hours), and you need to compile btrfs-progs.
(The safest way)

Or you can try btrfs check --repair, the possibility to screw up the fs
should be pretty low.
(The fastest way)

Thanks,
Qu
>
>
> The full output of "btrfs check --readonly /dev/sda" command is as below:
>
> [1/7] checking root items
> [2/7] checking extents
> incorrect local backref count on 1937096425472 root 5 owner 17045 offset
> 212492288 found 1 wanted 1048577 back 0x55f258caa470
> backpointer mismatch on [1937096425472 4096]
> ERROR: errors found in extent allocation tree or chunk allocation
> [3/7] checking free space cache
> [4/7] checking fs roots
> [5/7] checking only csums items (without verifying data)
> [6/7] checking root refs
> [7/7] checking quota groups skipped (not enabled on this FS)
> Opening filesystem to check...
> Checking filesystem on /dev/sda
> UUID: 014bdf0a-bcb3-4a7c-b58d-c1fc17281f7e
> found 1386975199232 bytes used, error(s) found
> total csum bytes: 1352697008
> total tree bytes: 1508327424
> total fs tree bytes: 61161472
> total extent tree bytes: 37421056
> btree space waste bytes: 55303865
> file data blocks allocated: 1388605296640
> referenced 1385670742016
>
>
> I did "btrfs rescue zero-log /dev/sda" but that did not change the output of
> "btrfs check" performed afterwards.
>
> regards,
>
> Jörg
>
> Am Sonntag, 22. Dezember 2019, 01:59:16 CET schrieben Sie:
>> On 2019/12/21 下午10:55, jollemeyer@gmx.de wrote:
>>> Dear Qu,
>>>
>>> the output is as follows:
>>> #btrfs ins dump-tree - b 2089035464704 /dev/sda1
>>> btrfs-progs v5.4
>>> No mapping for 2089035464704 - 2089035481088
>>> Couldn't map the block 2089035464704
>>> Couldn't map the block 2089035464704
>>> Bad tree Block 2089035464704, bytenr mismatch, want 2089035464704, have 0
>>> ERROR: failed to read tree Block 2089035464704
>>
>> That's strange. The tree block isn't even mapped.
>>
>> But from the dmesg, it shows there is an extent item in log tree, which
>> doesn't look sane.
>>
>> BTW, what's the stderr from `btrfs check` I guess you have only patesd
>> the stdout thus no real error message.
>>
>> Anyway, you can solve it by `btrfs rescue zero-log`, but I doubt there
>> are more problems than we expect.
>>
>> Thanks,
>> Qu
>>
>>> Many thanks.
>>>
>>> Jörg
>>>
>>> -----Original Message-----
>>> From: Qu Wenruo <quwenruo.btrfs@gmx.com>
>>> To: jollemeyer@gmx.de, linux-btrfs@vger.kernel.org
>>> Sent: Sa., 21 Dez. 2019 15:19
>>> Subject: Re: read time block corruption on root partition, Not booting
>>>
>>> On 2019/12/21 下午10:06, jollemeyer@gmx.de wrote:
>>>> Dear all,
>>>>
>>>> on my BTRFS root partition (/dev/sda), a "read time block corruption" was
>>>> detected. The system refuses to boot. Current kernel is 5.4.2-1-Manjaro.
>>>>
>>>> Systemd's journalctl generated the following output:
>>>>
>>>> Dez 21 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt
>>>> leaf: block=2089035464704 slot=85 extent bytenr=1937096425472 len=4096
>>>> invalid extent refs, have 1 expect >= inline 1048577 Dez 21 10:46:41
>>>> Phoenix kernel: BTRFS error (device sda): block=2089035464704 read time
>>>> tree block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS
>>>> critical (device sda): corrupt leaf: block=2089035464704 slot=85 extent
>>>> bytenr=1937096425472 len=4096 invalid extent refs, have 1 expect >=
>>>> inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda):
>>>> block=2089035464704 read time tree block corruption detected Dez 21
>>>> 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt leaf:
>>>> block=2089035464704 slot=85 extent bytenr=1937096425472 len=4096 invalid
>>>> extent refs, have 1 expect >= inline 1048577 Dez 21 10:46:41 Phoenix
>>>> kernel: BTRFS error (device sda): block=2089035464704 read time tree
>>>> block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS critical
>>>> (device sda): corrupt leaf: block=2089035464704 slot=85 extent
>>>> bytenr=1937096425472 len=4096 invalid extent refs, have 1 expect >=
>>>> inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda):
>>>> block=2089035464704 read time tree block corruption detected Dez 21
>>>> 10:46:41 Phoenix kernel: BTRFS: error (device sda) in
>>>> btrfs_replay_log:2293: errno=-5 IO failure (Failed to recover log tree)>
>>> "btrfs ins dump-tree -b 2089035464704 /dev/sda" output please.
>>>
>>> Thanks,
>>> Qu
>>>
>>>> Dez 21 10:46:41 Phoenix kernel: ------------[ cut here ]------------
>>>> Dez 21 10:46:41 Phoenix kernel: WARNING: CPU: 7 PID: 621 at
>>>> fs/btrfs/block-group.c:132 btrfs_put_block_group+0x42/0x50 [btrfs] Dez
>>>> 21 10:46:41 Phoenix kernel: Modules linked in: usblp snd_hda_codec_hdmi
>>>> intel_rapl_msr snd_hda_codec_realtek intel_rapl_common
>>>> snd_hda_codec_generic ext4 ledtrig_audio x86_pkg_temp_thermal
>>>> intel_powerclamp coretemp crc16 kvm_intel mbcache i915 jbd2 kvm
>>>> snd_hda_intel snd_intel_nhlt i2c_algo_bit irqbypass drm_kms_helper
>>>> snd_hda_codec crct10dif_pclmul crc32_pclmul snd_hda_core mousedev
>>>> ghash_clmulni_intel drm snd_hwdep snd_pcm aesni_intel crypto_simd cryptd
>>>> glue_helper mei_hdcp intel_cstate iTCO_wdt intel_gtt snd_timer
>>>> iTCO_vendor_support intel_uncore mei_me intel_rapl_perf input_leds
>>>> agpgart i2c_i801 snd syscopyarea mei sysfillrect lpc_ich r8168(OE)
>>>> sysimgblt soundcore fb_sys_fops evdev ie31200_edac mac_hid vboxpci(OE)
>>>> vboxnetflt(OE) vboxnetadp(OE) vboxdrv(OE) sg crypto_user ip_tables
>>>> x_tables hid_generic usbhid hid btrfs libcrc32c crc32c_generic xor uas
>>>> usb_storage raid6_pq sr_mod cdrom sd_mod ahci serio_raw atkbd libahci
>>>> libps2 libata xhci_pci scsi_mod xhci_hcd ehci_pci crc32c_intel ehci_hcd
>>>> i8042 serio Dez 21 10:46:41 Phoenix kernel: CPU: 7 PID: 621 Comm: mount
>>>> Tainted: G OE 5.4.2-1-MANJARO #1 Dez 21 10:46:41 Phoenix
>>>> kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./H77
>>>> Pro4/MVP, BIOS P1.40 09/04/2012 Dez 21 10:46:41 Phoenix kernel: RIP:
>>>> 0010:btrfs_put_block_group+0x42/0x50 [btrfs] Dez 21 10:46:41 Phoenix
>>>> kernel: Code: 2d 48 83 7d 50 00 75 22 48 8b 85 e8 01 00 00 48 85 c0 75
>>>> 1e 48 8b bd d8 00 00 00 e8 a8 08 66 d9 48 89 ef 5d e9 9f 08 66 d9 c3
>>>> <0f> 0b eb da 0f 0b eb cf 0f 0b eb de 66 90 0f 1f 44 00 00 31 d2 e9 Dez
>>>> 21 10:46:41 Phoenix kernel: RSP: 0018:ffffa95900f47ae8 EFLAGS: 00010206
>>>> Dez 21 10:46:41 Phoenix kernel: RAX: 0000000000000001 RBX:
>>>> ffff8a1eb7bfe0e0 RCX: 0000000000000000 Dez 21 10:46:41 Phoenix kernel:
>>>> RDX: 0000000000000001 RSI: ffff8a1ecf5f0250 RDI: ffff8a1eb7bfe000 Dez 21
>>>> 10:46:41 Phoenix kernel: RBP: ffff8a1eb7bfe000 R08: 0000000000000000
>>>> R09: 0000000000000001 Dez 21 10:46:41 Phoenix kernel: R10:
>>>> 00000000003f6c00 R11: 0000000000000000 R12: ffff8a1ec81b0080 Dez 21
>>>> 10:46:41 Phoenix kernel: R13: ffff8a1ec81b0090 R14: ffff8a1eb7bfe000
>>>> R15: dead000000000100 Dez 21 10:46:41 Phoenix kernel: FS:
>>>> 00007f77003d7500(0000) GS:ffff8a1ecf5c0000(0000) knlGS:0000000000000000
>>>> Dez 21 10:46:41 Phoenix kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
>>>> 0000000080050033 Dez 21 10:46:41 Phoenix kernel: CR2: 0000559652364460
>>>> CR3: 00000003fbaec005 CR4: 00000000001606e0 Dez 21 10:46:41 Phoenix
>>>> kernel: Call Trace:
>>>> Dez 21 10:46:41 Phoenix kernel: btrfs_free_block_groups+0x11c/0x260
>>>> [btrfs] Dez 21 10:46:41 Phoenix kernel: open_ctree+0x187a/0x1bc0
>>>> [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: btrfs_mount_root+0x57b/0x670 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
>>>> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
>>>> Dez 21 10:46:41 Phoenix kernel: fc_mount+0xe/0x30
>>>> Dez 21 10:46:41 Phoenix kernel: vfs_kern_mount.part.0+0x71/0x90
>>>> Dez 21 10:46:41 Phoenix kernel: btrfs_mount+0x18e/0x930 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: ? filename_lookup+0x105/0x190
>>>> Dez 21 10:46:41 Phoenix kernel: ? legacy_get_tree+0x27/0x40
>>>> Dez 21 10:46:41 Phoenix kernel: ? btrfs_remount+0x4d0/0x4d0 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
>>>> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
>>>> Dez 21 10:46:41 Phoenix kernel: do_mount+0x77a/0xa30
>>>> Dez 21 10:46:41 Phoenix kernel: ksys_mount+0x7e/0xc0
>>>> Dez 21 10:46:41 Phoenix kernel: __x64_sys_mount+0x21/0x30
>>>> Dez 21 10:46:41 Phoenix kernel: do_syscall_64+0x4e/0x140
>>>> Dez 21 10:46:41 Phoenix kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
>>>> Dez 21 10:46:41 Phoenix kernel: RIP: 0033:0x7f770055ae4e
>>>> Dez 21 10:46:41 Phoenix kernel: Code: 48 8b 0d 35 00 0c 00 f7 d8 64 89 01
>>>> 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8
>>>> a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 02 00 0c 00 f7
>>>> d8 64 89 01 48 Dez 21 10:46:41 Phoenix kernel: RSP:
>>>> 002b:00007ffedb3135c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 Dez 21
>>>> 10:46:41 Phoenix kernel: RAX: ffffffffffffffda RBX: 00007f7700681204
>>>> RCX: 00007f770055ae4e Dez 21 10:46:41 Phoenix kernel: RDX:
>>>> 000055d9705f5650 RSI: 000055d9705f56f0 RDI: 000055d9705f73d0 Dez 21
>>>> 10:46:41 Phoenix kernel: RBP: 000055d9705f5440 R08: 000055d9705f5670
>>>> R09: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R10:
>>>> 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Dez 21
>>>> 10:46:41 Phoenix kernel: R13: 000055d9705f73d0 R14: 000055d9705f5650
>>>> R15: 000055d9705f5440 Dez 21 10:46:41 Phoenix kernel: ---[ end trace
>>>> 71465d442bb4c509 ]--- Dez 21 10:46:41 Phoenix kernel: ------------[ cut
>>>> here ]------------ Dez 21 10:46:41 Phoenix kernel: WARNING: CPU: 0 PID:
>>>> 621 at fs/btrfs/block-group.c:3166 btrfs_free_block_groups+0x1ea/0x260
>>>> [btrfs] Dez 21 10:46:41 Phoenix kernel: Modules linked in: usblp
>>>> snd_hda_codec_hdmi intel_rapl_msr snd_hda_codec_realtek
>>>> intel_rapl_common snd_hda_codec_generic ext4 ledtrig_audio
>>>> x86_pkg_temp_thermal intel_powerclamp coretemp crc16 kvm_intel mbcache
>>>> i915 jbd2 kvm snd_hda_intel snd_intel_nhlt i2c_algo_bit irqbypass
>>>> drm_kms_helper snd_hda_codec crct10dif_pclmul crc32_pclmul snd_hda_core
>>>> mousedev ghash_clmulni_intel drm snd_hwdep snd_pcm aesni_intel
>>>> crypto_simd cryptd glue_helper mei_hdcp intel_cstate iTCO_wdt intel_gtt
>>>> snd_timer iTCO_vendor_support intel_uncore mei_me intel_rapl_perf
>>>> input_leds agpgart i2c_i801 snd syscopyarea mei sysfillrect lpc_ich
>>>> r8168(OE) sysimgblt soundcore fb_sys_fops evdev ie31200_edac mac_hid
>>>> vboxpci(OE) vboxnetflt(OE) vboxnetadp(OE) vboxdrv(OE) sg crypto_user
>>>> ip_tables x_tables hid_generic usbhid hid btrfs libcrc32c crc32c_generic
>>>> xor uas usb_storage raid6_pq sr_mod cdrom sd_mod ahci serio_raw atkbd
>>>> libahci libps2 libata xhci_pci scsi_mod xhci_hcd ehci_pci crc32c_intel
>>>> ehci_hcd i8042 serio Dez 21 10:46:41 Phoenix kernel: CPU: 0 PID: 621
>>>> Comm: mount Tainted: G W OE 5.4.2-1-MANJARO #1 Dez 21
>>>> 10:46:41 Phoenix kernel: Hardware name: To Be Filled By O.E.M. To Be
>>>> Filled By O.E.M./H77 Pro4/MVP, BIOS P1.40 09/04/2012 Dez 21 10:46:41
>>>> Phoenix kernel: RIP: 0010:btrfs_free_block_groups+0x1ea/0x260 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: Code: 49 bd 22 01 00 00 00 00 ad de e8
>>>> 51 13 d1 d9 e8 0c d3 4e d9 48 89 ef e8 64 9b ff ff 48 8b 85 00 10 00 00
>>>> 49 39 c4 75 3c eb 5f <0f> 0b 31 c9 31 d2 4c 89 fe 48 89 ef e8 55 85 ff
>>>> ff 48 8b 43 08 48 Dez 21 10:46:41 Phoenix kernel: RSP:
>>>> 0018:ffffa95900f47af8 EFLAGS: 00010206 Dez 21 10:46:41 Phoenix kernel:
>>>> RAX: ffff8a1eca367488 RBX: ffff8a1eca367488 RCX: 0000000000000000 Dez 21
>>>> 10:46:41 Phoenix kernel: RDX: 0000000000000001 RSI: ffff8a1eca364200
>>>> RDI: 00000000ffffffff Dez 21 10:46:41 Phoenix kernel: RBP:
>>>> ffff8a1ec81b0000 R08: 0000000000000000 R09: 0000000020000000 Dez 21
>>>> 10:46:41 Phoenix kernel: R10: 0000000000000005 R11: ffffffffffd5ce37
>>>> R12: ffff8a1ec81b1000 Dez 21 10:46:41 Phoenix kernel: R13:
>>>> dead000000000122 R14: dead000000000100 R15: ffff8a1eca367400 Dez 21
>>>> 10:46:41 Phoenix kernel: FS: 00007f77003d7500(0000)
>>>> GS:ffff8a1ecf400000(0000) knlGS:0000000000000000 Dez 21 10:46:41 Phoenix
>>>> kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dez 21
>>>> 10:46:41 Phoenix kernel: CR2: 0000559006e55d68 CR3: 00000003fbaec006
>>>> CR4: 00000000001606f0 Dez 21 10:46:41 Phoenix kernel: Call Trace:
>>>> Dez 21 10:46:41 Phoenix kernel: open_ctree+0x187a/0x1bc0 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: btrfs_mount_root+0x57b/0x670 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
>>>> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
>>>> Dez 21 10:46:41 Phoenix kernel: fc_mount+0xe/0x30
>>>> Dez 21 10:46:41 Phoenix kernel: vfs_kern_mount.part.0+0x71/0x90
>>>> Dez 21 10:46:41 Phoenix kernel: btrfs_mount+0x18e/0x930 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: ? filename_lookup+0x105/0x190
>>>> Dez 21 10:46:41 Phoenix kernel: ? legacy_get_tree+0x27/0x40
>>>> Dez 21 10:46:41 Phoenix kernel: ? btrfs_remount+0x4d0/0x4d0 [btrfs]
>>>> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
>>>> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
>>>> Dez 21 10:46:41 Phoenix kernel: do_mount+0x77a/0xa30
>>>> Dez 21 10:46:41 Phoenix kernel: ksys_mount+0x7e/0xc0
>>>> Dez 21 10:46:41 Phoenix kernel: __x64_sys_mount+0x21/0x30
>>>> Dez 21 10:46:41 Phoenix kernel: do_syscall_64+0x4e/0x140
>>>> Dez 21 10:46:41 Phoenix kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
>>>> Dez 21 10:46:41 Phoenix kernel: RIP: 0033:0x7f770055ae4e
>>>> Dez 21 10:46:41 Phoenix kernel: Code: 48 8b 0d 35 00 0c 00 f7 d8 64 89 01
>>>> 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8
>>>> a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 02 00 0c 00 f7
>>>> d8 64 89 01 48 Dez 21 10:46:41 Phoenix kernel: RSP:
>>>> 002b:00007ffedb3135c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 Dez 21
>>>> 10:46:41 Phoenix kernel: RAX: ffffffffffffffda RBX: 00007f7700681204
>>>> RCX: 00007f770055ae4e Dez 21 10:46:41 Phoenix kernel: RDX:
>>>> 000055d9705f5650 RSI: 000055d9705f56f0 RDI: 000055d9705f73d0 Dez 21
>>>> 10:46:41 Phoenix kernel: RBP: 000055d9705f5440 R08: 000055d9705f5670
>>>> R09: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R10:
>>>> 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Dez 21
>>>> 10:46:41 Phoenix kernel: R13: 000055d9705f73d0 R14: 000055d9705f5650
>>>> R15: 000055d9705f5440 Dez 21 10:46:41 Phoenix kernel: ---[ end trace
>>>> 71465d442bb4c50a ]--- Dez 21 10:46:41 Phoenix kernel: BTRFS info (device
>>>> sda): space_info 1 has 733175808 free, is not full Dez 21 10:46:41
>>>> Phoenix kernel: BTRFS info (device sda): space_info total=1386200694784,
>>>> used=1385467318272, pinned=0, reserved=4096, may_use=0, readonly=196608
>>>> Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda):
>>>> global_block_rsv: size 0 reserved 0 Dez 21 10:46:41 Phoenix kernel:
>>>> BTRFS info (device sda): trans_block_rsv: size 0 reserved 0 Dez 21
>>>> 10:46:41 Phoenix kernel: BTRFS info (device sda): chunk_block_rsv: size
>>>> 0 reserved 0 Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda):
>>>> delayed_block_rsv: size 0 reserved 0 Dez 21 10:46:41 Phoenix kernel:
>>>> BTRFS info (device sda): delayed_refs_rsv: size 0 reserved 0 Dez 21
>>>> 10:46:41 Phoenix kernel: BTRFS error (device sda): open_ctree failed --
>>>> Subject: Unit process exited
>>>> -- Defined-By: systemd
>>>>
>>>> Btrfs check --readonly /dev/sda also found errors:
>>>>
>>>> Opening filesystem to check...
>>>> Checking filesystem on /dev/sda
>>>> UUID: 014bdf0a-bcb3-4a7c-b58d-c1fc17281f7e
>>>> found 1386975199232 bytes used, error(s) found
>>>> total csum bytes: 1352697008
>>>> total tree bytes: 1508327424
>>>> total fs tree bytes: 61161472
>>>> total extent tree bytes: 37421056
>>>> btree space waste bytes: 55303865
>>>> file data blocks allocated: 1388605296640
>>>>
>>>> referenced 1385670742016
>>>>
>>>> Btrfs scrub does not recognize any errors.
>>>>
>>>> Kindly help me to recover this error.
>>>>
>>>> many thanks,
>>>>
>>>> Jörg Meyer
>
>
>
>