On Mon, Apr 18, 2016 at 10:05:02PM +0300, Michael Ravits wrote:
Hi Jonas, I asked a similar question here last week. You could find it by searching for this topic in the mailing list archives: "Clone VM with saved state". That being said I'd be very glad if you could update here when you find a complete solution. - Michael
What I *think* Jones wants is to use virt-builder, it could cause some problems if you started all of them. What Michael wants is: virsh save running_domain saved-image-file.img virsh save-image-edit saved-image-file.img Hope that helped, Martin
On Mon, Apr 18, 2016 at 9:49 PM, Jonas Finnemann Jensen <jonasfj@xxxxxxxxxxxwrote:Hi, I would like to save a running domain (ie. disk + memory) and be able to restore it multiple times creating duplicates of the orignal domain all starting from the same state. Use case: I'm building a task-processing system for use in a CI flow. I want to run multiple VMs in parallel using the same image (always starting from the same state). And to avoid needlessly booting between each task, I would like to save (and distribute) the domain state, so that I just restore from memory. However, I can't seems to change the UUID or the name of a domain once it is saved. Nor do I seem able to rename a domain while it is running. I can obviously duplicate both the disks and the file to which I saved the domain state using "virsh save". But I seem unable to rename before I restore.. Any ideas? Could I do this with snapshots? I suspect not since I see virDomainSnapshotRedefinePrep() calling virDomainDefCheckABIStability which raises the error here: https://fossies.org/dox/libvirt-1.3.3/domain__conf_8c_source.html#l17991 Out of curiosity does anyone know what horrors might befall me if I were to remove the lines protecting against name and UUID changes? Then compile my own libvirt... The comment in the code says name can be changed, but I'm guessing I would have to change the UUID too. Does anyone see how that would create issues? I'm not sure how libvirt uses the UUID internally. -- Regards Jonas Finnemann Jensen. _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
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