not able to mount lv

[tempsample]

ioscan -fnC disk | grep -i "NO_HW"

 -> nothing is displayed. all disk are in claimed.

fsck -F vxfs -o full /dev/vg01/lvol1
log replay in progress
pass0 - checking structural files
pass1 - checking inode sanity and blocks
pass2 - checking directory linkage
warning - no lost+found directory for fileset 999
pass3 - checking reference counts
pass4 - checking resource maps
OK to clear log? (ynq)y
set state to CLEAN? (ynq)y

mount /dev/vg01/lvol1 appdata

vxfs mount: /dev/vg01/lvol1 is corrupted. needs checking.

what else I need to check for the above error.

[Bill Hassell]

>> warning - no lost+found directory for fileset 999

This lvol has lost it's lost+found directory (never remove this directory) so a lost inode (999) can't be saved and the lvol can't be corrected.