If you have a qcow2 image on *local* type storage and move it to a ceph pool pmox will automatically convert the image to raw. Performance is entirely down to your particular setup - moving image to a ceph pool certainly won't guarantee performance increase - in fact the opposite could happen. You can benchmark your ceph setup easily. http://tracker.ceph.com/projects/ceph/wiki/Benchmark_Ceph_Cluster_Performance B On Sat, Apr 9, 2016 at 2:45 PM, Lindsay Mathieson <lindsay.mathieson@xxxxxxxxx> wrote: > On 9/04/2016 11:01 PM, Mad Th wrote: > > After this move, does the qcow2 image get converted to some raw or rbd file > format? > > > raw (rbd block) > > > Will moving vm/quest images to ceph storage pool after converting qcow2 > to raw format first , improve performance? > > > I doubt it. > > We still see some i/o lag in our 3node proxmox/ceph cluster (12 OSD) .... > 4x4TB disk with 7200 rpm, 1 SSD disk for journallling, 1SSD for proxmox on > each of the 3 nodes , each server with 64G ram, Intel Dual E5-2620v3 (2x > 2.4Ghz Hex-Core + HT) x2 (total 24core ) on each server. > > > > You didn't mention your network setup, also what SSD model are you usng? > > -- > Lindsay Mathieson > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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