LVM2:
It's working fine with all Filesystem, but I got shoot while I snapshotted with xfs.
And then, I'd tried all filesystem within shapshot to make clearly, which might cause accident.
As the result, everything was fine with dm-snap, expecting XFS, and then I got the message as following.
XFS:Filesystem dm-6 has duplicate UUID - can't mount.
I seemed like xfs might do some processing for checking device-map, so it didn't allow the same UUID be appeared.
Finally, I just need to point out the parameter to skip while mounting, and then command as below.
mount -t xfs -o noatime,nosuid,nouuid /devmyvg/fuckersnap /mnt/floppy/
Edited on 9th of May.
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