XFS V5 can become unmountable after an unclean unmount. Zeroing the
log and running xfs_repair fixes the filesystem.
The following kernel messages are from Linux 3.14.4, but the same
thing happens in 3.15.1.
SGI XFS with ACLs, security attributes, realtime, large block/inode
numbers, no debug enabled
XFS (sda2): Version 5 superblock detected. This kernel has
EXPERIMENTAL support enabled!
Use of these features in this kernel is at your own risk!
XFS (sda2): Using inode cluster size of 16384 bytes
XFS (sda2): Mounting Filesystem
XFS (sda2): Starting recovery (logdev: internal)
XFS (sda2): Version 5 superblock detected. This kernel has
EXPERIMENTAL support enabled!
Use of these features in this kernel is at your own risk!
ffff880063e85000: 41 42 33 42 00 00 00 2b ff ff ff ff ff ff ff ff
AB3B...+........
ffff880063e85010: 00 00 00 00 01 f3 6a 00 00 00 00 01 00 00 06 c9
......j.........
ffff880063e85020: 30 c1 4d f1 3a e2 44 7d a7 bb 25 1f a5 65 5a 7f
0.M.:.D}..%..eZ.
ffff880063e85030: 00 00 00 01 4d 5f 10 db 00 00 00 01 00 00 00 07
....M_..........
XFS (sda2): Internal error xfs_allocbt_read_verify at line 362 of file
fs/xfs/xfs_alloc_btree.c. Caller 0xffffffffa0527be5
CPU: 0 PID: 93 Comm: kworker/0:1H Not tainted 3.14.4-1-ARCH #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
Workqueue: xfslogd xfs_buf_iodone_work [xfs]
0000000000000000 00000000cebb8ca3 ffff88006e927d90 ffffffff8150996e
ffff880067064800 ffff88006e927dd0 ffffffffa052ae00 ffffffffa0527be5
ffffffffa05ab718 ffff8800672132a0 ffff880067213200 ffffffffa0527be5
Call Trace:
[<ffffffff8150996e>] dump_stack+0x4d/0x6f
[<ffffffffa052ae00>] xfs_corruption_error+0x90/0xa0 [xfs]
[<ffffffffa0527be5>] ? xfs_buf_iodone_work+0x75/0xa0 [xfs]
[<ffffffffa0527be5>] ? xfs_buf_iodone_work+0x75/0xa0 [xfs]
[<ffffffffa0546ed9>] xfs_allocbt_read_verify+0x69/0xe0 [xfs]
[<ffffffffa0527be5>] ? xfs_buf_iodone_work+0x75/0xa0 [xfs]
[<ffffffffa0527be5>] xfs_buf_iodone_work+0x75/0xa0 [xfs]
[<ffffffff81088068>] process_one_work+0x168/0x450
[<ffffffff81088ac2>] worker_thread+0x132/0x3e0
[<ffffffff81088990>] ? manage_workers.isra.23+0x2d0/0x2d0
[<ffffffff8108f2ea>] kthread+0xea/0x100
[<ffffffff811b0000>] ? __mem_cgroup_try_charge+0x6a0/0x8a0
[<ffffffff8108f200>] ? kthread_create_on_node+0x1a0/0x1a0
[<ffffffff815176bc>] ret_from_fork+0x7c/0xb0
[<ffffffff8108f200>] ? kthread_create_on_node+0x1a0/0x1a0
XFS (sda2): Corruption detected. Unmount and run xfs_repair
XFS (sda2): metadata I/O error: block 0x1f36a00
("xfs_trans_read_buf_map") error 117 numblks 8
XFS (sda2): Failed to recover EFIs
XFS (sda2): log mount finish failed
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