> >>The tests form Eric only do reads (there is no single write involved). > Oh, I miss that. > > I think it should be a qemu problem, as only difference is that > > with lvm snapshot backup, > > backup reads are done directly from disk > > and with qemu backup > > reads are done through qemu > > Maybe qemu has more overhead to read disk, or maybe they are some > slowdown when guest need to read disk, and backup job need to read it too.
There is also a small possibility that we have a bug ;-) I will debug that when I update that code for 1.7. Looking at the code, it seems that we also backup read blocks immediately. That way we can avoid re-reads. I am not sure if that is good or bad. _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
