If the mount option in the mount table output has the option mntlock="key", then it is locked with the key "key". To verify if mount locking is in use and has the value of "key", run the mount command and review its output.
If the VxFS file system has mntlock="key" in its mount options, then unmounting the file system fails.
You can unlock the file system with the fsadm command and then unmount it. To unlock a locked mount, run the following command where "key" is the lock identifier and mount_point_name is the file system mount point.
# /opt/VRTS/bin/fsadm -o mntunlock="key" mount_point_name
To unmount a file system mounted with locking, run the vxumountcommand with the option mntunlock="key", for example:
# /opt/VRTS/bin/umount -o mntunlock="key" mount_point_name