[BUG] Btrfs: Corrupted root filesystem
From: Tarkan Erimer
Date: Tue Jul 05 2011 - 03:27:01 EST
At the weekend; I updated my Linux Box. After the update, I rebooted my
box as usually. When I tried to log in, X or KDM was frozen. I had no
choice but hard reset. After the hard reset; when powered on again, I
hit the below btrfs bug :
[ 22.588566] udev[1411]: starting version 166
[ 23.343133] device-mapper: uevent: version 1.0.3
[ 23.343327] device-mapper: ioctl: 4.18.0-ioctl (2010-06-29)
initialised: dm-devel@xxxxxxxxxx
[ 183.992833] Btrfs loaded
[ 184.000282] device fsid 6e4eba2e662daff1-956db2b6443294be devid 1
transid 156509 /dev/sda1
[ 184.026900] parent transid verify failed on 712880873472 wanted
156509 found 156065
[ 184.027365] parent transid verify failed on 712880873472 wanted
156509 found 156065
[ 184.033328] parent transid verify failed on 712880873472 wanted
156509 found 156065
[ 184.054422] parent transid verify failed on 485440565248 wanted
156055 found 156498
[ 184.054895] parent transid verify failed on 485440565248 wanted
156055 found 156498
[ 184.055045] parent transid verify failed on 485440565248 wanted
156055 found 156498
[ 184.058274] parent transid verify failed on 485440565248 wanted
156055 found 156498
[ 184.058281] parent transid verify failed on 485440565248 wanted
156055 found 156498
[ 184.058306] ------------[ cut here ]------------
[ 184.058312] kernel BUG at
/usr/src/packages/BUILD/kernel-default-2.6.37.1/linux-2.6.37/fs/btrfs/disk-io.c:1004!
[ 184.058320] invalid opcode: 0000 [#1] SMP
[ 184.058326] last sysfs file: /sys/devices/virtual/bdi/btrfs-1/uevent
[ 184.058332] CPU 0
[ 184.058335] Modules linked in: btrfs zlib_deflate dm_mod nls_utf8
usb_storage ata_generic parport_pc parport arc4 ecb acpi_cpufreq mperf
fan thermal nfs nfs_acl lockd fscache auth_rpcgss sunrpc nls_iso8859_1
nls_cp437 af_packet st usbhid uhci_hcd processor sky2 sg sr_mod button
cdrom ehci_hcd thermal_sys usbcore edd squashfs loop
[ 184.058384]
[ 184.058388] Pid: 1975, comm: mount Not tainted 2.6.37.1-1.2-default
#1 LENOVO INVALID/To be filled by O.E.M.
[ 184.058400] RIP: 0010:[<ffffffffa02ac767>] [<ffffffffa02ac767>]
find_and_setup_root+0xf7/0x100 [btrfs]
[ 184.058427] RSP: 0018:ffff88006b851c48 EFLAGS: 00010282
[ 184.058429] RAX: 00000000fffffffe RBX: ffff88006e318800 RCX:
0000000000000001
[ 184.058432] RDX: 00000000fffffffb RSI: ffff880072e0bf40 RDI:
ffff8800669f6140
[ 184.058435] RBP: ffff88006e318000 R08: 0000000000000000 R09:
0000000000000000
[ 184.058437] R10: 0000000000000001 R11: 0000000000000000 R12:
0000000000000002
[ 184.058440] R13: 00000000ffffffea R14: ffff880066850000 R15:
ffff88006e318000
[ 184.058443] FS: 00007f15180bd7e0(0000) GS:ffff880075600000(0000)
knlGS:0000000000000000
[ 184.058446] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 184.058448] CR2: 00007f236f078ca0 CR3: 000000006e4fb000 CR4:
00000000000406f0
[ 184.058451] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 184.058453] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 184.058456] Process mount (pid: 1975, threadinfo ffff88006b850000,
task ffff88006b474700)
[ 184.058459] Stack:
[ 184.058460] 0000000000000002 ffffffffa02abbf5 ffff88006e76e000
ffff880066851d18
[ 184.058465] ffff88006e554800 ffffffffa02adbd7 0000000000000003
ffff88006b851d18
[ 184.058469] ffff88006b851dd8 ffffffff817a6279 ffff88006e318800
ffff88006e76e800
[ 184.058473] Call Trace:
[ 184.058509] [<ffffffffa02adbd7>] open_ctree+0xfc7/0x16e0 [btrfs]
[ 184.058536] [<ffffffffa028de71>] btrfs_mount+0x411/0x520 [btrfs]
[ 184.058544] [<ffffffff8114a529>] vfs_kern_mount+0x89/0x250
[ 184.058550] [<ffffffff8114a763>] do_kern_mount+0x53/0x130
[ 184.058555] [<ffffffff81164cc2>] do_mount+0x1e2/0x210
[ 184.058560] [<ffffffff81164dda>] sys_mount+0x9a/0xf0
[ 184.058566] [<ffffffff81002e4b>] system_call_fastpath+0x16/0x1b
[ 184.058571] [<00007f15175abe4a>] 0x7f15175abe4a
[ 184.058573] Code: 45 10 31 c0 eb 93 66 0f 1f 44 00 00 8b 95 a8 02 00
00 eb b8 48 8b 7d 00 e8 47 71 02 00 b8 fb ff ff ff e9 72 ff ff ff 31 ff
eb ed <0f> 0b 0f 1f 80 00 00 00 00 48 83 ec 58 48 89 6c 24 30 48 8b 2d
[ 184.058597] RIP [<ffffffffa02ac767>] find_and_setup_root+0xf7/0x100
[btrfs]
[ 184.058607] RSP <ffff88006b851c48>
[ 184.058609] ---[ end trace 4e464313e039d2d9 ]---
[ 208.206581] JFS: nTxBlock = 8192, nTxLock = 65536
So, this bug ate all of my root file system :-\ When mounting or running
btrfsck, the same error occurs. I tried with 2.6.37-38 and 3.0-rc5
kernels and the result is all the same. It looks like a long time bug
that sits in btrfs code. I hope the above error message can help.
Because, I had to re-format my disk :-\
Tarkan
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