gistfile1.txt

md7 : active (auto-read-only) raid1 sda9[0] sdb10[1]
      914202816 blocks [2/2] [UU]



xfs_check /dev/md7
xfs_check: /dev/md7 is not a valid XFS filesystem (unexpected SB magic number 0x4c554b53)
xfs_check: size check failed
xfs_check: WARNING - filesystem uses v1 dirs,limited functionality provided.
xfs_check: read failed: Invalid argument
cache_node_purge: refcount was 1, not zero (node=0x9186be8)
xfs_check: cannot read root inode (22)
cache_node_purge: refcount was 1, not zero (node=0x9186cf0)
xfs_check: cannot read realtime summary inode (22)
xfs_check: size check failed
xfs_check: WARNING - filesystem uses v1 dirs,limited functionality provided.
xfs_check: read failed: Invalid argument
bad superblock magic number 4c554b53, giving up

 grep -n1 md7 /etc/fstab
10-UUID=5e944e94-7861-4f3b-8e07-443379595ccc /               ext4    errors=remount-ro 0       1
11:# /home was on /dev/md7 during installation
12-UUID=335011f5-0426-4c1b-864b-73615973720e /home           xfs     defaults        0       2


 xfs_check /dev/sda9
xfs_check: /dev/sda9 is not a valid XFS filesystem (unexpected SB magic number 0x4c554b53)
xfs_check: size check failed
xfs_check: WARNING - filesystem uses v1 dirs,limited functionality provided.
xfs_check: read failed: Invalid argument
cache_node_purge: refcount was 1, not zero (node=0x8f69be8)
xfs_check: cannot read root inode (22)
cache_node_purge: refcount was 1, not zero (node=0x8f69cf0)
xfs_check: cannot read realtime summary inode (22)
xfs_check: size check failed
xfs_check: WARNING - filesystem uses v1 dirs,limited functionality provided.
xfs_check: read failed: Invalid argument
bad superblock magic number 4c554b53, giving up

xfs_check /dev/sdb10
xfs_check: /dev/sdb10 is not a valid XFS filesystem (unexpected SB magic number 0x4c554b53)
xfs_check: size check failed
xfs_check: WARNING - filesystem uses v1 dirs,limited functionality provided.
xfs_check: read failed: Invalid argument
cache_node_purge: refcount was 1, not zero (node=0xa05abe8)
xfs_check: cannot read root inode (22)
cache_node_purge: refcount was 1, not zero (node=0xa05acf0)
xfs_check: cannot read realtime summary inode (22)
xfs_check: size check failed
xfs_check: WARNING - filesystem uses v1 dirs,limited functionality provided.
xfs_check: read failed: Invalid argument
bad superblock magic number 4c554b53, giving up

xfs_repair gives no results:

.Sorry, could not find valid secondary superblock
Exiting now.


//usr/local/src/xfsprogs# xfs_repair -V
xfs_repair version 3.1.8
root@phobos://usr/local/src/xfsprogs# xfs_check -V
xfs_check version 3.1.8


//usr/local/src/xfsprogs# git status
# On branch master
nothing to commit (working directory clean)
root@phobos://usr/local/src/xfsprogs# git log -n1
commit a8decaf0cf49d3db099e8dc419390c353e2b19ad
Author: Ben Myers <bpm@sgi.com>
Date:   Tue Mar 20 13:52:15 2012 -0500

    3.1.8 release
    
    Signed-off-by: Ben Myers <bpm@sgi.com>