vxfs mount: ERROR: V-3-20023: file system has structural damage

Today in one server one of the file system got crashed. Luckily its /var/adm/crash. So no data is there to lose.

While trying to mount the file system below error was coming

# /usr/sbin/mount -F vxfs /dev/vg00/lvol10 /var/adm/crash
UX:vxfs mount: ERROR: V-3-20023: file system on /dev/vg00/lvol10 has structural damage

Let me try a fsck

# /usr/sbin/fsck -F vxfs -o full /dev/vg00/rlvol10
UX:vxfs fsck: ERROR: V-3-20726: OLT extent 0 has bad checksum
read of primary OLT failed
UX:vxfs fsck: ERROR: V-3-20726: OLT extent 1 has bad checksum
read of OLT copy failed
UX:vxfs fsck: ERROR: V-3-20718: no valid OLT, cannot continue
file system check failure, aborting ...

So its not recoverable. If any valuable data was lost  we need to restore it  from backup. In my case no need to restore backup. So I went ahead and created the file system again.

# /usr/sbin/newfs -F vxfs -o largefiles /dev/vg00/rlvol10
    version 6 layout
    67108864 sectors, 67108864 blocks of size 1024, log size 16384 blocks
    largefiles supported

Then mounted the file system.

 #/usr/sbin/mount -F vxfs /dev/vg00/lvol10 /var/adm/crash
# bdf | grep crash
/dev/vg00/lvol10   67108864   33529 62883134    0% /var/adm/crash
#

An alternative way, if you want to recover data,  is given in the below blog.

http://unixqas.blogspot.com/2011/09/vx-volume-is-corrupted-and-doesnt.html