I was reading that raw format is faster than qcow2. We have few vm/guest images in qcow2 which we have moved to ceph storage pool ( using proxmox GUI disk move ).
After this move, does the qcow2 image get converted to some raw or rbd file format? Will moving vm/quest images to ceph storage pool after converting qcow2 to raw format first , improve performance? 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.
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