From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:51976 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753512Ab2IDR0p (ORCPT ); Tue, 4 Sep 2012 13:26:45 -0400 Received: by eaac11 with SMTP id c11so2035219eaa.19 for ; Tue, 04 Sep 2012 10:26:43 -0700 (PDT) Message-ID: <1346779594.24415.17.camel@lapoo.opensvc.com> Subject: Re: [ANNOUNCE] opensvc btrfs send/receive driver From: Christophe Varoqui Reply-To: christophe.varoqui@opensvc.com To: linux-btrfs@vger.kernel.org Date: Tue, 04 Sep 2012 19:26:34 +0200 Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Here are the stacks encountered during the opensvc btrfs send/receive development. The system is a debian squeeze amd64 in a kvm over debian squeeze amd64. The disks handed to btrfs are logical volumes passed to the kvm as vdb and vdc. The vm kernel is 3.6rc3 and btrfs-progs are at git commit 043a63924c9831ac52ce38f0365b9bfd628fb6a3 (Thu, 9 Aug 2012). For the 2 first stacks below, the btrfs volume was formatted using "mkfs.btrfs -L data /dev/vdb /dev/vdc". This format gave me the most stable system. Sep 4 09:02:15 deb1 kernel: [290899.676202] ------------[ cut here ]------------ Sep 4 09:02:15 deb1 kernel: [290899.676261] WARNING: at fs/btrfs/extent_io.c:4674 map_private_extent_buffer+0x83/0xc9 [btrfs]() Sep 4 09:02:15 deb1 kernel: [290899.676271] Hardware name: Bochs Sep 4 09:02:15 deb1 kernel: [290899.676274] Modules linked in: btrfs zlib_deflate crc32c libcrc32c sha1_generic hmac drbd lru_cache cn binfmt_misc ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 loop tpm_tis joydev processor snd_pcm snd_timer snd soundcore snd_page_alloc tpm virtio_balloon hid_generic i2c_piix4 tpm_bios i2c_core evdev thermal_sys pcspkr microcode psmouse serio_raw button usbhid hid ext3 jbd mbcache dm_mod ide_cd_mod cdrom ata_generic ata_piix libata scsi_mod virtio_blk virtio_net floppy uhci_hcd ehci_hcd piix ide_core usbcore usb_common virtio_pci virtio_ring virtio Sep 4 09:02:15 deb1 kernel: [290899.676500] Pid: 16675, comm: btrfs Not tainted 3.6.0-rc3 #1 Sep 4 09:02:15 deb1 kernel: [290899.676502] Call Trace: Sep 4 09:02:15 deb1 kernel: [290899.676532] [] ? warn_slowpath_common+0x78/0x8c Sep 4 09:02:15 deb1 kernel: [290899.676547] [] ? map_private_extent_buffer+0x83/0xc9 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676598] [] ? btrfs_get_token_64+0x79/0xca [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676614] [] ? process_extent+0xb9/0xb25 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676625] [] ? send_utimes+0x149/0x15b [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676636] [] ? btrfs_buffer_uptodate+0x57/0x57 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676647] [] ? T.1226+0x82/0x106 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676657] [] ? changed_cb+0x7b3/0x7ca [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676665] [] ? btrfs_item_key_to_cpu+0x10/0x2d [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676673] [] ? tree_advance+0x127/0x168 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676685] [] ? btrfs_get_token_32+0x77/0xca [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676698] [] ? memcmp_extent_buffer+0xc5/0xe4 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676707] [] ? btrfs_compare_trees+0x61c/0x7ab [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676717] [] ? process_extent+0xb25/0xb25 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676727] [] ? write_buf+0x51/0x84 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676737] [] ? btrfs_ioctl_send+0x5c7/0x8f1 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676753] [] ? kmem_cache_shrink+0x122/0x19c Sep 4 09:02:15 deb1 kernel: [290899.676766] [] ? btrfs_ioctl+0x120a/0x1331 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.676770] [] ? __kmalloc+0xf0/0x100 Sep 4 09:02:15 deb1 kernel: [290899.676783] [] ? sched_clock+0x5/0x8 Sep 4 09:02:15 deb1 kernel: [290899.676794] [] ? sched_clock_local+0x13/0x76 Sep 4 09:02:15 deb1 kernel: [290899.676798] [] ? enqueue_task_fair+0x127/0x270 Sep 4 09:02:15 deb1 kernel: [290899.676809] [] ? do_vfs_ioctl+0x44b/0x490 Sep 4 09:02:15 deb1 kernel: [290899.676812] [] ? do_fork+0x190/0x256 Sep 4 09:02:15 deb1 kernel: [290899.676814] [] ? sys_ioctl+0x4b/0x6f Sep 4 09:02:15 deb1 kernel: [290899.676830] [] ? stub_clone+0x13/0x20 Sep 4 09:02:15 deb1 kernel: [290899.676833] [] ? system_call_fastpath+0x16/0x1b Sep 4 09:02:15 deb1 kernel: [290899.676834] ---[ end trace ed6ba08da487db8e ]--- Sep 4 09:02:15 deb1 kernel: [290899.677093] general protection fault: 0000 [#1] SMP Sep 4 09:02:15 deb1 kernel: [290899.677429] Modules linked in: btrfs zlib_deflate crc32c libcrc32c sha1_generic hmac drbd lru_cache cn binfmt_misc ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 loop tpm_tis joydev processor snd_pcm snd_timer snd soundcore snd_page_alloc tpm virtio_balloon hid_generic i2c_piix4 tpm_bios i2c_core evdev thermal_sys pcspkr microcode psmouse serio_raw button usbhid hid ext3 jbd mbcache dm_mod ide_cd_mod cdrom ata_generic ata_piix libata scsi_mod virtio_blk virtio_net floppy uhci_hcd ehci_hcd piix ide_core usbcore usb_common virtio_pci virtio_ring virtio Sep 4 09:02:15 deb1 kernel: [290899.682063] CPU 1 Sep 4 09:02:15 deb1 kernel: [290899.682150] Pid: 16675, comm: btrfs Tainted: G W 3.6.0-rc3 #1 Bochs Bochs Sep 4 09:02:15 deb1 kernel: [290899.683170] RIP: 0010:[] [] read_extent_buffer +0xc3/0xd8 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.683832] RSP: 0018:ffff88000b1159a8 EFLAGS: 00010206 Sep 4 09:02:15 deb1 kernel: [290899.684284] RAX: 0000000000000008 RBX: ffff8800146e0c18 RCX: 0000000000000008 Sep 4 09:02:15 deb1 kernel: [290899.684954] RDX: 0000000000000010 RSI: 0005080000000005 RDI: ffff88000b1159d8 Sep 4 09:02:15 deb1 kernel: [290899.685592] RBP: ffff88000b1159d8 R08: ffff880000000000 R09: 0000160000000000 Sep 4 09:02:15 deb1 kernel: [290899.686233] R10: 0000000000001000 R11: 0000000000000000 R12: 0000000000000000 Sep 4 09:02:15 deb1 kernel: [290899.686824] R13: 000000000000100d R14: 0000000000000001 R15: 0000000000000fd8 Sep 4 09:02:15 deb1 kernel: [290899.687453] FS: 00007fbf03462740(0000) GS:ffff88001fc80000(0000) knlGS:0000000000000000 Sep 4 09:02:15 deb1 kernel: [290899.688173] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Sep 4 09:02:15 deb1 kernel: [290899.688711] CR2: 00007fbf0284cfb8 CR3: 000000001dd37000 CR4: 00000000000006e0 Sep 4 09:02:15 deb1 kernel: [290899.689346] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Sep 4 09:02:15 deb1 kernel: [290899.689932] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Sep 4 09:02:15 deb1 kernel: [290899.690560] Process btrfs (pid: 16675, threadinfo ffff88000b114000, task ffff88001d364420) Sep 4 09:02:15 deb1 kernel: [290899.691221] Stack: Sep 4 09:02:15 deb1 kernel: [290899.691524] 0000000000000000 ffff8800146e0c18 0000000000000fd8 000000000000002d Sep 4 09:02:15 deb1 kernel: [290899.692423] 0000000000001005 ffffffffa044877a 0000000000001000 0000000000001000 Sep 4 09:02:15 deb1 kernel: [290899.693211] 0000000000001000 ffff88001d30e000 ffff8800108bc800 ffff88001d964510 Sep 4 09:02:15 deb1 kernel: [290899.694175] Call Trace: Sep 4 09:02:15 deb1 kernel: [290899.694503] [] ? btrfs_get_token_64+0x90/0xca [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.694976] [] ? process_extent+0xb9/0xb25 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.695367] [] ? send_utimes+0x149/0x15b [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.695796] [] ? btrfs_buffer_uptodate+0x57/0x57 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.696258] [] ? T.1226+0x82/0x106 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.696711] [] ? changed_cb+0x7b3/0x7ca [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.697196] [] ? btrfs_item_key_to_cpu+0x10/0x2d [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.697571] [] ? tree_advance+0x127/0x168 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.698063] [] ? btrfs_get_token_32+0x77/0xca [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.698437] [] ? memcmp_extent_buffer+0xc5/0xe4 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.698814] [] ? btrfs_compare_trees+0x61c/0x7ab [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.699239] [] ? process_extent+0xb25/0xb25 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.699621] [] ? write_buf+0x51/0x84 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.699969] [] ? btrfs_ioctl_send+0x5c7/0x8f1 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.700474] [] ? kmem_cache_shrink+0x122/0x19c Sep 4 09:02:15 deb1 kernel: [290899.701009] [] ? btrfs_ioctl+0x120a/0x1331 [btrfs] Sep 4 09:02:15 deb1 kernel: [290899.701450] [] ? __kmalloc+0xf0/0x100 Sep 4 09:02:15 deb1 kernel: [290899.701791] [] ? sched_clock+0x5/0x8 Sep 4 09:02:15 deb1 kernel: [290899.702147] [] ? sched_clock_local+0x13/0x76 Sep 4 09:02:15 deb1 kernel: [290899.702582] [] ? enqueue_task_fair+0x127/0x270 Sep 4 09:02:15 deb1 kernel: [290899.703061] [] ? do_vfs_ioctl+0x44b/0x490 Sep 4 09:02:15 deb1 kernel: [290899.703437] [] ? do_fork+0x190/0x256 Sep 4 09:02:15 deb1 kernel: [290899.703766] [] ? sys_ioctl+0x4b/0x6f Sep 4 09:02:15 deb1 kernel: [290899.704141] [] ? stub_clone+0x13/0x20 Sep 4 09:02:15 deb1 kernel: [290899.704643] [] ? system_call_fastpath+0x16/0x1b Sep 4 09:02:15 deb1 kernel: [290899.704995] Code: 4c 39 e0 48 8b 34 11 49 0f 47 c4 48 83 c2 08 49 29 c4 49 8d 0c 31 48 c1 f9 06 48 c1 e1 0c 4a 8d 34 01 48 89 c1 48 01 fe 48 89 ef a4 48 89 fd 31 ff 4d 85 e4 75 bc 5b 5d 41 5c 41 5d 41 5e c3 Sep 4 09:02:15 deb1 kernel: [290899.707024] RSP Sep 4 09:02:15 deb1 kernel: [290899.707723] ---[ end trace ed6ba08da487db90 ]--- The stacks below were produced with a btrfs formatted using "-m raid1 -d raid1". These options induced more hangs. Aug 29 00:38:53 deb1 kernel: [280841.951480] ------------[ cut here ]------------ Aug 29 00:38:53 deb1 kernel: [280841.952428] invalid opcode: 0000 [#1] SMP Aug 29 00:38:53 deb1 kernel: [280841.952896] Modules linked in: btrfs zlib_deflate crc32c libcrc32c sha1_generic hmac drbd lru_cache cn binfmt_misc ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 loop joydev hid_generic usbhid hid tpm_tis tpm i2c_piix4 snd_pcm snd_timer snd soundcore snd_page_alloc i2c_core tpm_bios virtio_balloon microcode evdev pcspkr psmouse serio_raw button processor thermal_sys ext3 jbd mbcache dm_mod virtio_net virtio_blk ide_cd_mod cdrom ata_generic ata_piix libata scsi_mod uhci_hcd ehci_hcd virtio_pci virtio_ring virtio floppy usbcore usb_common piix ide_core Aug 29 00:38:53 deb1 kernel: [280841.954761] CPU 3 Aug 29 00:38:53 deb1 kernel: [280841.954761] Pid: 31687, comm: btrfs-endio-2 Not tainted 3.6.0-rc3 #1 Bochs Bochs Aug 29 00:38:53 deb1 kernel: [280841.954761] RIP: 0010:[] [] __btrfs_map_block +0x5c/0x50c [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] RSP: 0018:ffff88001cd77ca0 EFLAGS: 00010282 Aug 29 00:38:53 deb1 kernel: [280841.954761] RAX: 000000000000001e RBX: ffff88001742c120 RCX: 00000000174a174a Aug 29 00:38:53 deb1 kernel: [280841.954761] RDX: ffffffff81752768 RSI: 0000000000000046 RDI: 0000000000000246 Aug 29 00:38:53 deb1 kernel: [280841.954761] RBP: ffff88001cd77d58 R08: 0000000000000000 R09: 000000000000001e Aug 29 00:38:53 deb1 kernel: [280841.954761] R10: 0000000000000005 R11: ffff88001f80c000 R12: 0000000000000002 Aug 29 00:38:53 deb1 kernel: [280841.954761] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8800178bc000 Aug 29 00:38:53 deb1 kernel: [280841.954761] FS: 0000000000000000(0000) GS:ffff88001fd80000(0000) knlGS:0000000000000000 Aug 29 00:38:53 deb1 kernel: [280841.954761] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Aug 29 00:38:53 deb1 kernel: [280841.954761] CR2: 00007f226ad89fb8 CR3: 000000001d1ff000 CR4: 00000000000006e0 Aug 29 00:38:53 deb1 kernel: [280841.954761] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Aug 29 00:38:53 deb1 kernel: [280841.954761] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Aug 29 00:38:53 deb1 kernel: [280841.954761] Process btrfs-endio-2 (pid: 31687, threadinfo ffff88001cd76000, task ffff880017579470) Aug 29 00:38:53 deb1 kernel: [280841.954761] Stack: Aug 29 00:38:53 deb1 kernel: [280841.954761] ffff88000bc0b000 ffffffff8135679d ffff880000000028 ffff88001cd77d10 Aug 29 00:38:53 deb1 kernel: [280841.954761] ffff88001cd77cd0 000000008106c3ba 0000000000000206 0000000100000107 Aug 29 00:38:53 deb1 kernel: [280841.954761] 0000000000000000 000000000b0b7da9 00000000f150b07d ffffffff816081c0 Aug 29 00:38:53 deb1 kernel: [280841.954761] Call Trace: Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? printk+0x4c/0x51 Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? btrfs_readpage_end_io_hook+0x198/0x1d6 [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? btrfs_find_device_for_logical+0x46/0x7f [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? btrfs_update_inode_item+0xd2/0xd2 [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? end_bio_extent_readpage+0x16b/0x76f [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? lock_timer_base+0x49/0x49 Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? virt_to_head_page+0x9/0x2c Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? worker_loop+0x18c/0x4fe [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? btrfs_queue_worker+0x260/0x260 [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? btrfs_queue_worker+0x260/0x260 [btrfs] Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? kthread+0x81/0x89 Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? kernel_thread_helper+0x4/0x10 Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? kthread_freezable_should_stop+0x53/0x53 Aug 29 00:38:53 deb1 kernel: [280841.954761] [] ? gs_change+0x13/0x13 Aug 29 00:38:53 deb1 kernel: [280841.954761] Code: 89 f6 48 89 df e8 f5 2a ff ff 48 89 c6 f0 ff 43 08 48 85 c0 75 19 48 8b 55 00 4c 89 f6 48 c7 c7 5f 09 45 a0 31 c0 e8 59 be f3 e0 <0f> 0b eb fe 48 8b 40 18 4c 39 f0 77 0d 48 8b 4e 20 48 8d 14 01 Aug 29 00:38:53 deb1 kernel: [280841.954761] RSP Aug 29 00:38:53 deb1 kernel: [280841.975783] ---[ end trace 5a6edb6702f23b71 ]--- Aug 30 01:37:53 deb1 kernel: [10043.780751] btrfs csum failed ino 257 off 0 csum 1212590769 private 4063890949 Aug 30 01:37:53 deb1 kernel: [10043.781274] ------------[ cut here ]------------ Aug 30 01:37:53 deb1 kernel: [10043.781950] invalid opcode: 0000 [#1] SMP Aug 30 01:37:53 deb1 kernel: [10043.782271] Modules linked in: btrfs zlib_deflate crc32c libcrc32c sha1_generic hmac drbd lru_cache cn binfmt_misc ib_ iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 loop i2c_piix4 i2c_core evdev snd_pcm snd_timer snd soundcore snd_page_alloc tpm_tis tpm tpm_bios button psmouse joydev serio_raw pcspkr hid_generic virtio_balloon microcode processor ther mal_sys usbhid hid ext3 jbd mbcache dm_mod virtio_net ide_cd_mod cdrom ata_generic ata_piix virtio_blk libata scsi_mod floppy uhci_hcd ehci_hcd usbcor e usb_common virtio_pci virtio_ring virtio piix ide_core Aug 30 01:37:53 deb1 kernel: [10043.784710] CPU 1 Aug 30 01:37:53 deb1 kernel: [10043.784710] Pid: 3337, comm: btrfs-endio-6 Not tainted 3.6.0-rc3 #1 Bochs Bochs Aug 30 01:37:53 deb1 kernel: [10043.784710] RIP: 0010:[] [] __btrfs_map_block +0x5c/0x50c [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] RSP: 0018:ffff880017673ca0 EFLAGS: 00010282 Aug 30 01:37:53 deb1 kernel: [10043.784710] RAX: 000000000000001e RBX: ffff88001e65c120 RCX: 000000000b910b91 Aug 30 01:37:53 deb1 kernel: [10043.784710] RDX: ffffffff81752768 RSI: 0000000000000046 RDI: 0000000000000246 Aug 30 01:37:53 deb1 kernel: [10043.784710] RBP: ffff880017673d58 R08: 0000000000000000 R09: 000000000000001e Aug 30 01:37:53 deb1 kernel: [10043.784710] R10: 0000000000000005 R11: ffff88001f80c000 R12: 0000000000000002 Aug 30 01:37:53 deb1 kernel: [10043.784710] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88001e4fd0c0 Aug 30 01:37:53 deb1 kernel: [10043.784710] FS: 0000000000000000(0000) GS:ffff88001fc80000(0000) knlGS:0000000000000000 Aug 30 01:37:53 deb1 kernel: [10043.784710] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Aug 30 01:37:53 deb1 kernel: [10043.784710] CR2: 00007f8a5b185fb8 CR3: 00000000174ae000 CR4: 00000000000006e0 Aug 30 01:37:53 deb1 kernel: [10043.784710] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Aug 30 01:37:53 deb1 kernel: [10043.784710] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Aug 30 01:37:53 deb1 kernel: [10043.784710] Process btrfs-endio-6 (pid: 3337, threadinfo ffff880017672000, task ffff88001771d1c0) Aug 30 01:37:53 deb1 kernel: [10043.784710] Stack: Aug 30 01:37:53 deb1 kernel: [10043.784710] ffff88001d2aa000 ffffffff8135679d ffff880000000028 ffff880017673d10 Aug 30 01:37:53 deb1 kernel: [10043.784710] ffff880017673cd0 000000001fd93840 0000000000000206 0000000100000101 Aug 30 01:37:53 deb1 kernel: [10043.784710] 0000000000000000 000000004846aab1 00000000f23a0e05 ffffffff816081c0 Aug 30 01:37:53 deb1 kernel: [10043.784710] Call Trace: Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? printk+0x4c/0x51 Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? btrfs_readpage_end_io_hook+0x198/0x1d6 [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? btrfs_find_device_for_logical+0x46/0x7f [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? btrfs_update_inode_item+0xd2/0xd2 [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? end_bio_extent_readpage+0x16b/0x76f [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? lock_timer_base+0x49/0x49 Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? virt_to_head_page+0x9/0x2c Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? worker_loop+0x18c/0x4fe [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? btrfs_queue_worker+0x260/0x260 [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? btrfs_queue_worker+0x260/0x260 [btrfs] Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? kthread+0x81/0x89 Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? kernel_thread_helper+0x4/0x10 Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? kthread_freezable_should_stop+0x53/0x53 Aug 30 01:37:53 deb1 kernel: [10043.784710] [] ? gs_change+0x13/0x13 Aug 30 01:37:53 deb1 kernel: [10043.784710] Code: 89 f6 48 89 df e8 f5 2a ff ff 48 89 c6 f0 ff 43 08 48 85 c0 75 19 48 8b 55 00 4c 89 f6 48 c7 c7 5f f9 45 a0 31 c0 e8 59 ce f2 e0 <0f> 0b eb fe 48 8b 40 18 4c 39 f0 77 0d 48 8b 4e 20 48 8d 14 01 Aug 30 01:37:53 deb1 kernel: [10043.784710] RSP Aug 30 01:37:53 deb1 kernel: [10043.803491] ---[ end trace 2e9f1f508c6bb6dc ]--- Regards, Christophe Varoqui OpenSVC