On 3 January 2017 at 10:42, Kent Borg <kentborg@xxxxxxxx> wrote: > Can you say more about pool snapshot speed? Slow to make snapshot? Slow to > access snapshot? Slow to delete a snapshot? Slow to access original? Slow to > modify original? (Slow to modify at first or slow continually?) This is live snapshots with qemu/rbd (using proxmox), so as well as the image snasphsot there is a raw image created containing the VM state. My testing has been with small 3 node clusters, so they weren't particularly fast. - Taking snapshots is ok - Restoring snapshots is very slow, usually half an hour plus, sometimes hours. - Deletion is equally slow. OTOH, qcow2 snasphots over cephfs, gluster, lizard etc only take a couple of minutes. > > What are circumstances where pool snapshots are appropriate? Not familiar with them >Is there a way > to speed them up? Would live to know :) -- Lindsay _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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