>>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. Also, does the backup have a difference of speed if vm use ide or virtio drives ? ----- Mail original ----- De: "Dietmar Maurer" <diet...@proxmox.com> À: "Alexandre DERUMIER" <aderum...@odiso.com>, "Eric Blevins" <e...@netwalk.com> Cc: pve-devel@pve.proxmox.com Envoyé: Mardi 26 Novembre 2013 08:25:18 Objet: RE: [pve-devel] KVM Live Backup performance > Hi, this is because with new backup, > > each new write in the vm during the backup, is copied to backup storage and > to > the vm. The tests form Eric only do reads (there is no single write involved). _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
