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Internal error xfs_sb_read_verify at line 726

To: xfs@xxxxxxxxxxx
Subject: Internal error xfs_sb_read_verify at line 726
From: Markus Trippelsdorf <markus@xxxxxxxxxxxxxxx>
Date: Mon, 6 May 2013 13:27:17 +0200
Delivered-to: xfs@xxxxxxxxxxx
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Today I accidentally tried to mount my backup disk at /dev/sdc instead
of /dev/sdc1 and this is what happened:

...
EXT4-fs (sdc): VFS: Can't find ext4 filesystem
FAT-fs (sdc): bogus number of reserved sectors
FAT-fs (sdc): Can't find a valid FAT filesystem
FAT-fs (sdc): bogus number of reserved sectors
FAT-fs (sdc): Can't find a valid FAT filesystem
ISOFS: Unable to identify CD-ROM format.
XFS (sdc): bad magic number
ffff8800db620000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
................
ffff8800db620010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
................
ffff8800db620020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
................
ffff8800db620030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
................
XFS (sdc): Internal error xfs_sb_read_verify at line 726 of file 
fs/xfs/xfs_mount.c.  Caller 0xffffffff8119e5cd

CPU: 3 PID: 68 Comm: kworker/3:1H Not tainted 3.9.0-10518-gd7ab730-dirty #440
Hardware name: System manufacturer System Product Name/M4A78T-E, BIOS 3503    
04/13/2011
Workqueue: xfslogd xfs_buf_iodone_work
 ffffffff81537e9c ffffffff811a0416 000002d600000000 ffffffff8119e5cd
 ffff8800db2e7500 0000000000000016 ffff8801c0242800 ffff88021fd94f00
 ffffffff811e93d5 ffffffff8119e5cd ffff8802168ed820 ffff8800db2e75a0
Call Trace:
 [<ffffffff81537e9c>] ? dump_stack+0xc/0x15
 [<ffffffff811a0416>] ? xfs_corruption_error+0x56/0x80
 [<ffffffff8119e5cd>] ? xfs_buf_iodone_work+0x6d/0xa0
 [<ffffffff811e93d5>] ? xfs_sb_read_verify+0xf5/0x120
 [<ffffffff8119e5cd>] ? xfs_buf_iodone_work+0x6d/0xa0
 [<ffffffff8119e5cd>] ? xfs_buf_iodone_work+0x6d/0xa0
 [<ffffffff81072cbc>] ? process_one_work+0x13c/0x3c0
 [<ffffffff8107304d>] ? worker_thread+0x10d/0x3a0
 [<ffffffff81072f40>] ? process_one_work+0x3c0/0x3c0
 [<ffffffff8107912f>] ? kthread+0xaf/0xc0
 [<ffffffff81079080>] ? __kthread_parkme+0x80/0x80
 [<ffffffff8153cf2c>] ? ret_from_fork+0x7c/0xb0
 [<ffffffff81079080>] ? __kthread_parkme+0x80/0x80
XFS (sdc): Corruption detected. Unmount and run xfs_repair
XFS (sdc): SB validate failed with error 22.
XFS (sdc1): Mounting Filesystem
XFS (sdc1): Ending clean mount

Seems a bit overkill to me ;-).

-- 
Markus

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