[PVE-User] Ridiculous Live snapshot times with ceph

Lindsay Mathieson lindsay.mathieson at gmail.com
Tue Dec 2 03:32:23 CET 2014

Taking/Restoring live snapshots (test windows VM) is taking a
ridiculous amount of time - unusably so.

With images hosted on our NAS (NFS) or on gluster, snapshots take
around 30 seconds to take and/or restore.

With ceph:
- 9 *minutes* to take
- The restore has take *20 minutes* to get to 34%

And it generating iowait's of around 15%

Same hardware and VM's as previous tests, just different underlying storage.

Snapshots of a shutdown VM are near instant.


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