XFS ファイルシステムをマウントまたは確認することができない

Issue

• xfs ファイルシステムがハングアップし、xfs_check を実行すると以下のエラーが発生します。

# xfs_check /dev/sdm1
ERROR:The filesystem has valuable metadata changes in a log which needs to
be replayed.Mount the filesystem to replay the log, and unmount it before
re-running xfs_check.If you are unable to mount the filesystem, then use
the xfs_repair -L option to destroy the log and attempt a repair.
Note that destroying the log may cause corruption -- please attempt a mount
of the filesystem before doing this.

• ファイルシステムもマウントしません。

# mount /dev/sdm1 /new/
mount:Structure needs cleaning
# mount -f /dev/sdm1 /new/
/dev/sdm1 100G 49G 46G 52% /new

• 唯一の可能性は、ファイルシステムを動作させる "xfs_repair -L" です。

kernel:XFS internal error XFS_WANT_CORRUPTED_GOTO at line 1572 of file fs/xfs/xfs_alloc.c.Caller 0xffffffff88871969
kernel: 
kernel:Call Trace:
kernel:[<ffffffff8886fe2f>] :xfs:xfs_free_ag_extent+0x19e/0x67e
kernel:[<ffffffff88871969>] :xfs:xfs_free_extent+0xa9/0xc9
kernel:[<ffffffff8887a755>] :xfs:xfs_bmap_finish+0xee/0x15f
kernel:[<ffffffff88899927>] :xfs:xfs_itruncate_finish+0x185/0x2af
kernel:[<ffffffff888b1001>] :xfs:xfs_inactive+0x1de/0x40f
kernel:[<ffffffff888bb8c1>] :xfs:xfs_fs_clear_inode+0xa4/0xeb
kernel:[<ffffffff80022eee>] clear_inode+0xd2/0x123
kernel:[<ffffffff8002f3ec>] generic_delete_inode+0xde/0x143
kernel:[<ffffffff8003c716>] do_unlinkat+0xd5/0x141
kernel:[<ffffffff8005d229>] tracesys+0x71/0xe0
kernel:[<ffffffff8005d28d>] tracesys+0xd5/0xe0
kernel: 
kernel: xfs_force_shutdown(sdm1,0x8) called from line 4269 of file fs/xfs/xfs_bmap.c.Return address = 0xffffffff8887a78a
kernel:Filesystem "sdm1":Corruption of in-memory data detected.Shutting down filesystem: sdm1
kernel:Please umount the filesystem, and rectify the problem(s)
kernel: nfsd: non-standard errno:5