On 02/05/2014 08:58 AM, Gergely Horváth wrote: > Hello guys! > > We want to move some guests' disk images to different locations (within > the same machine, locally), but we do not want to turn off the guests. > Can we do that while the guest is running, like live migration? Yes, live storage migration is possible; although at the moment, qemu is lacking a way to restart the operation if it fails midstream, so libvirt only allows the operation if you are willing to temporarily make your guest transient. > > I did not find any related documentation or posts about it. > > Let's say the guest has a disk at /ssd/image.raw > We want to move that to /hdd/image.raw > > Is there any way to do that without interrupting the guest? Not rigorously tested, but this should do it: virsh dumpxml $dom > file virsh undefine $dom virsh blockcopy $dom /ssd/image.raw /hdd/image.raw \ --wait --verbose --pivot virsh define file -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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