-------- Original Message --------
Subject: Filesystem with Errors, Unusual behavior
From: Joshua Schmidlkofer <joshl...@gmail.com>
To: <linux-btrfs@vger.kernel.org>
Date: 2015年04月28日 14:11
I have a large-ish filesystem, and it's starting to cause problems
after some SATA errors.
After scrubs stalled, and reading of people with similar errors, I
downloaded the latest btrfs-progs and attempted a btrfsck - is
segfaults. This is ubuntu 14.04, running the mainline kernel 3.19.5.
I downloaded, built and ran btrfs-progs v3.19.1
"enabling repair mode
Checking filesystem on /dev/sdg1
UUID: 6d04d7ce-c27d-48c4-b655-2ef30bcb31ba
checking extents
bad key ordering 0 1
bad block 29535579947008
Errors found in extent allocation tree or chunk allocation
Fixed 0 roots.
checking free space cache
cache and super generation don't match, space cache will be invalidated
checking fs roots
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
bad key ordering 0 1
The following tree block(s) is corrupted in tree 437:
tree block bytenr: 29534473060352, level: 0, node key:
(33134905409536, 168, 16384)
Try to repair the btree for root 437
Segmentation fault (core dumped)"
Not sure about why such problem happens, but I'm interesting about the
segfault and want to help to enhance btrfsck.
Would you please do a btrfs-image dump and send it to me for deeper
investigate?
You can dump it with "btrfs-image -c9 <dev> btrfs_image.dump".
WARNING: btrfs-image dump will only dump metadata, and ignore all data.
Although it is generally considered safe, but if you think even the
dir/file name contains secret info, it's better not to do it.
Thanks,
Qu.
The filesystem mounts,but device sdi has errors and persistent issues.
I get these in dmesg:
"
[12241.912137] BTRFS warning (device sdi1): page private not zero on
page 25047644831744
[12241.912143] BTRFS warning (device sdi1): page private not zero on
page 25047644835840
[12241.912146] BTRFS warning (device sdi1): page private not zero on
page 25047644839936
[12241.912148] BTRFS warning (device sdi1): page private not zero on
page 25047644844032
[12241.912165] BTRFS warning (device sdi1): page private not zero on
page 25047695720448
[12241.912167] BTRFS warning (device sdi1): page private not zero on
page 25047695724544
[12241.912170] BTRFS warning (device sdi1): page private not zero on
page 25047695728640
[12241.912172] BTRFS warning (device sdi1): page private not zero on
page 25047695732736
[12241.912175] BTRFS warning (device sdi1): page private not zero on
page 25048245633024
[12241.912177] BTRFS warning (device sdi1): page private not zero on
page 25048245637120
[12241.912180] BTRFS warning (device sdi1): page private not zero on
page 25048245641216
[12241.912182] BTRFS warning (device sdi1): page private not zero on
page 25048245645312
[12241.912185] BTRFS warning (device sdi1): page private not zero on
page 25048247353344
[12241.912187] BTRFS warning (device sdi1): page private not zero on
page 25048247357440
[12241.912194] BTRFS warning (device sdi1): page private not zero on
page 25048247361536
[12241.912197] BTRFS warning (device sdi1): page private not zero on
page 25048247365632
[12241.912201] BTRFS warning (device sdi1): page private not zero on
page 27051485708288
[12241.912204] BTRFS warning (device sdi1): page private not zero on
page 27051485712384
[12241.912206] BTRFS warning (device sdi1): page private not zero on
page 27051485716480
[12241.912208] BTRFS warning (device sdi1): page private not zero on
page 27051485720576
"
It continues to attempt restarting the balance which was running when
the error cropped up:
"
[12972.887417] BTRFS: checking UUID tree
[12972.887468] BTRFS info (device sdi1): continuing balance
[12973.480650] BTRFS info (device sdi1): relocating block group
35081624223744 flags 68
[13002.058463] BTRFS critical (device sdi1): corrupt leaf, bad key
order: block=29534473060352,root=1, slot=0
[13002.059204] BTRFS critical (device sdi1): corrupt leaf, bad key
order: block=29534473060352,root=1, slot=0
[13002.059233] ------------[ cut here ]------------
[13002.059269] WARNING: CPU: 5 PID: 9506 at
/home/kernel/COD/linux/fs/btrfs/super.c:260
__btrfs_abort_transaction+0x5f/0x140 [btrfs]()
[13002.059272] BTRFS: Transaction aborted (error -5)
[13002.059274] Modules linked in: rfcomm bnep bluetooth nfsd
auth_rpcgss nfs_acl nfs bridge binfmt_misc lockd stp llc grace sunrpc
fscache snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel
snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_seq_midi
snd_seq_midi_event snd_rawmidi gpio_ich snd_seq coretemp kvm_intel
nouveau kvm snd_seq_device snd_timer mxm_wmi snd video serio_raw ttm
drm_kms_helper i7core_edac soundcore lpc_ich drm edac_core
i2c_algo_bit wmi mac_hid shpchp parport_pc ppdev lp parport tcp_htcp
btrfs uas raid10 raid456 async_raid6_recov async_memcpy async_pq
async_xor async_tx xor raid6_pq firewire_ohci raid1 raid0 e1000e
pata_acpi firewire_core ahci multipath ptp pata_jmicron usb_storage
libahci pps_core crc_itu_t linear
[13002.059340] CPU: 5 PID: 9506 Comm: kworker/u32:7 Tainted: G
W 3.19.5-031905-generic #201504211114
[13002.059342] Hardware name: Gigabyte Technology Co., Ltd.
X58A-UD3R/X58A-UD3R, BIOS FB 08/24/2010
[13002.059367] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs]
[13002.059369] 0000000000000104 ffff8803b904bc18 ffffffff817c6f17
0000000000000007
[13002.059372] ffff8803b904bc68 ffff8803b904bc58 ffffffff81076e17
ffff8803b904bc58
[13002.059375] ffff88040c270580 ffff8803a096b000 00000000fffffffb
0000000000000ae8
[13002.059379] Call Trace:
[13002.059386] [<ffffffff817c6f17>] dump_stack+0x45/0x57
[13002.059392] [<ffffffff81076e17>] warn_slowpath_common+0x97/0xe0
[13002.059397] [<ffffffff81076f16>] warn_slowpath_fmt+0x46/0x50
[13002.059411] [<ffffffffc04665cf>]
__btrfs_abort_transaction+0x5f/0x140 [btrfs]
[13002.059428] [<ffffffffc04840b5>]
btrfs_run_delayed_refs.part.82+0x175/0x290 [btrfs]
[13002.059445] [<ffffffffc04841e7>] btrfs_run_delayed_refs+0x17/0x20 [btrfs]
[13002.059462] [<ffffffffc04844b7>] delayed_ref_async_start+0x37/0x90 [btrfs]
[13002.059485] [<ffffffffc04c616e>] normal_work_helper+0x7e/0x1b0 [btrfs]
[13002.059508] [<ffffffffc04c64d2>] btrfs_extent_refs_helper+0x12/0x20 [btrfs]
[13002.059513] [<ffffffff8108f6b4>] process_one_work+0x144/0x470
[13002.059516] [<ffffffff810900fe>] worker_thread+0x11e/0x450
[13002.059520] [<ffffffff8108ffe0>] ? create_worker+0x1f0/0x1f0
[13002.059524] [<ffffffff81095e29>] kthread+0xc9/0xe0
[13002.059528] [<ffffffff81095d60>] ? flush_kthread_worker+0x90/0x90
[13002.059532] [<ffffffff817d3958>] ret_from_fork+0x58/0x90
[13002.059535] [<ffffffff81095d60>] ? flush_kthread_worker+0x90/0x90
[13002.059538] ---[ end trace 525f91ec70905a5c ]---
[13002.059541] BTRFS: error (device sdi1) in
btrfs_run_delayed_refs:2792: errno=-5 IO failure
[13002.059544] BTRFS info (device sdi1): forced readonly
"
Addtional Commands:
root@phoenix:/usr/src/btrfs-progs# ./btrfs --version
btrfs-progs v3.19.1
root@phoenix:/usr/src/btrfs-progs# ./btrfs fi show
Label: 'root' uuid: 0b762c31-e52b-449b-ba35-2bbbc08e931a
Total devices 1 FS bytes used 75.41GiB
devid 1 size 111.46GiB used 111.46GiB path /dev/mapper/phoenixroot-root
Label: 'media2015' uuid: 6d04d7ce-c27d-48c4-b655-2ef30bcb31ba
Total devices 8 FS bytes used 9.18TiB
devid 1 size 3.64TiB used 3.15TiB path /dev/sdg1
devid 2 size 3.64TiB used 3.15TiB path /dev/sdi1
devid 3 size 3.64TiB used 3.15TiB path /dev/sde1
devid 4 size 3.64TiB used 3.15TiB path /dev/sdf1
devid 6 size 2.73TiB used 2.13TiB path /dev/sdh1
devid 7 size 2.73TiB used 2.13TiB path /dev/sdd1
devid 8 size 2.73TiB used 774.75GiB path /dev/sdc1
devid 9 size 3.64TiB used 774.75GiB path /dev/sdb1
btrfs-progs v3.19.1
root@phoenix:/usr/src/btrfs-progs# ./btrfs fi df /media2015 # Replace
/home with the mount point of your btrfs-filesystem
Data, RAID10: total=9.17TiB, used=9.17TiB
System, RAID10: total=96.00MiB, used=880.00KiB
Metadata, RAID10: total=13.28GiB, used=11.98GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
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