[pve-devel] some news for snapshots
aderumier at odiso.com
Mon Aug 27 10:17:54 CEST 2012
>>AFAIK, you can already create a snapshot of COW2 files using 'savevm' command.
>>So I think the basic code must be there? It is just not implemented inside the
Yes, but savevm pause the vm and make a full snapshot (include memory,etc..), and It can take several minutes if you have big memory vm.
I have read some old mail with patch to do only disk snapshot (flushing pending writes)
But it's not implemented
I have see new patches to convert savevm hmp command to qmp
I'll do some tests with savevm today to see how it's works.
----- Mail original -----
De: "Dietmar Maurer" <dietmar at proxmox.com>
À: "Alexandre DERUMIER" <aderumier at odiso.com>, pve-devel at pve.proxmox.com
Envoyé: Lundi 27 Août 2012 10:07:02
Objet: RE: [pve-devel] some news for snapshots
> for qcow2 internal snapshot:
> We can't use qemu-img -c, to create snasphot, when vm is online. (confirmed
> by Stefan Hajnoczi from qemu mailing) It cause corruptions, and bad things.
> (I have tested it and had crashed my qcow2 file after some online snapshot
> and offline rollback) So no online internal snapshot for now. (I have tell the
> question if online internal snapshot is on the roadmap, don't have response
> yet from qemu mailing)
AFAIK, you can already create a snapshot of COW2 files using 'savevm' command.
So I think the basic code must be there? It is just not implemented inside the
Alexandre D e rumier
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