Hi,
I'd like to be able to take a snapshot of an XFS filesystem on top of
dm-thin.
The goal for the snapshot is:
- fast to complete (couple seconds or better)
- independent of origin (UUID updated?)
- read/write
To satisfy the independent goal, I'm updating the UUID on the snapshot.
Currently "xfs_admin -U xxx" takes in the ballpark of 14 seconds on my
test system.
Is there a better approach to achieve the goals? Or can the UUID update
be changed to be faster?
I realize the filesystem can be mounted with "nouuid" option, but would
prefer to avoid the possible trouble of duplicate UUIDs.
This is a test script I've used to illustrate the time of "xfs_admin -U":
https://pastebin.com/PFA5YRuH
Thanks for any help,
Todd
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