I have noticed following when booting 3.18.0-4.g0510331-xen:
[ +0.011127] XFS (md0): Mounting V5 Filesystem
[ +0.181431] XFS (md0): Starting recovery (logdev: internal)
[ +0.083015] XFS (md0): Unknown buffer type 0!
[ +0.009963] XFS (md0): _xfs_buf_ioapply: no ops on block 0xaea8802/0x1
[ +0.000154] ffff88014fceb200: 58 41 47 49 00 00 00 01 00 00 00 02 00 ae a8 80
XAGI............
[ +0.000179] ffff88014fceb210: 00 00 12 80 00 00 00 03 00 00 00 01 00 00 00 cd
................
[ +0.000194] ffff88014fceb220: 00 06 11 40 ff ff ff ff ff ff ff ff 00 06 11 41
...@...........A
[ +0.000183] ffff88014fceb230: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
................
[ +0.000183] CPU: 0 PID: 392 Comm: mount Tainted: G W
3.18.0-4.g0510331-xen #1
[ +0.000180] Hardware name: /DG965WH, BIOS
MQ96510J.86A.1754.2008.1117.0002 11/17/2008
[ +0.000180] 0000000000000000 ffffffff8000d595 ffffffff805a3d69
0000000000000001
[ +0.000399] ffffffffa03db045 ffff8800026b7900 000000000001b820
0000000000000000
[ +0.000398] ffff8800feec0204 0000000000000021 0000400000000000
ffff8800feeab928
[ +0.000398] Call Trace:
[ +0.000130] [<ffffffff8000b06b>] dump_trace+0x7b/0x1f0
[ +0.000123] [<ffffffff8000b274>] show_stack_log_lvl+0x94/0x170
[ +0.000121] [<ffffffff8000d5b1>] show_stack+0x21/0x50
[ +0.000122] [<ffffffff805a3d69>] dump_stack+0x41/0x51
[ +0.000153] [<ffffffffa03db045>] _xfs_buf_ioapply+0x3b5/0x3d0 [xfs]
[ +0.000147] [<ffffffffa03dc729>] xfs_buf_submit+0x59/0x1a0 [xfs]
[ +0.000139] [<ffffffffa03dca0b>] __xfs_buf_delwri_submit+0x19b/0x260 [xfs]
[ +0.000139] [<ffffffffa03dd66f>] xfs_buf_delwri_submit+0x2f/0xd0 [xfs]
[ +0.000143] [<ffffffffa04059fb>] xlog_recover_commit_trans+0x1ab/0x280 [xfs]
[ +0.000142] [<ffffffffa0405b53>] xlog_recovery_process_trans+0x83/0xc0 [xfs]
[ +0.000142] [<ffffffffa0405cfb>] xlog_recover_process_data+0x7b/0xc0 [xfs]
[ +0.000144] [<ffffffffa040613e>] xlog_do_recovery_pass+0x3fe/0x4f0 [xfs]
[ +0.000142] [<ffffffffa04062b3>] xlog_do_log_recovery+0x83/0xd0 [xfs]
[ +0.000151] [<ffffffffa0406311>] xlog_do_recover+0x11/0xe0 [xfs]
[ +0.000143] [<ffffffffa040707a>] xlog_recover+0x8a/0xf0 [xfs]
[ +0.000142] [<ffffffffa03faf28>] xfs_log_mount+0xe8/0x2c0 [xfs]
[ +0.000142] [<ffffffffa03f2b37>] xfs_mountfs+0x437/0x760 [xfs]
[ +0.000142] [<ffffffffa03f5cab>] xfs_fs_fill_super+0x2ab/0x320 [xfs]
[ +0.000126] [<ffffffff8017b35f>] mount_bdev+0x1af/0x1f0
[ +0.000123] [<ffffffff8017bdb4>] mount_fs+0x34/0x1a0
[ +0.000124] [<ffffffff80197d12>] vfs_kern_mount+0x62/0x130
[ +0.000121] [<ffffffff8019a6da>] do_mount+0x1fa/0xaf0
[ +0.000122] [<ffffffff8019b2cc>] SyS_mount+0x8c/0xe0
[ +0.000122] [<ffffffff805aa63b>] system_call_fastpath+0x16/0x1b
[ +0.000128] [<00007f8380eae1aa>] 0x7f8380eae1aa
[ +0.604879] XFS (md0): Ending recovery (logdev: internal)
I was under impression that this issue (if this is same one) was supposed to be
fixed:
http://oss.sgi.com/archives/xfs/2014-07/msg00429.html