Re: [libvirt-users] Can I move the disk image of the guest while it is running?

From: "Eric Blake" <eblake(a)redhat.com&gt; To: "Andrew Martin" <amartin(a)xes-inc.com&gt; Cc: "Gergely Horváth" <gergely.horvath(a)inepex.com&gt;, libvirt-users(a)redhat.com Sent: Thursday, February 6, 2014 9:31:29 AM Subject: Re: [libvirt-users] Can I move the disk image of the guest while it is running? On 02/06/2014 08:14 AM, Andrew Martin wrote: > Eric, > > For scripted live backups, which non-transient technique would you prefer: > 1. snapshot-create-as followed by blockpull, which results in the original > file being left as a standalone copy of the VM from that point in time; it > can then be copied off to a backup disk once blockpull completes Slower (because it pulls the entire contents of the original file into the new file), but likely to succeed.

> 2. snapshot-create-as followed by copying the backing file (since it is now > read-only) and then using blockcommit to pull the interim changes back into > the original/backing file (and removing the snapshot file) Ideal, but not supported until (unreleased) qemu 2.0.