On Wed, Feb 22, 2017 at 03:06:41PM -0600, Tim Cusack wrote: > I have a scenario that perhaps not many have attempted, but I still hope > that it is possible. > > Scenario: > > I would like to have a Base Windows 7 VM in KVM/QEMU. > > I would follow the following process (confirmed it works) > > 1. Shutdown running domain > - virsh shutdown <Domain> > 2. Remove existing disk from Domain XML: > - virt-xml BASE --remove-device --disk target=hda > 3. Add Correct Disk image for Snapshot to Domain XML: > - virt-xml BASE --add-device --disk > /var/lib/libvirt/images/BASE.qcow2,format=qcow2,target=hda,bus=ide > 4. Create the snapshot with description > - virsh snapshot-create-as BASE <Model>.qcow2 "OEM, Model" --disk-only > --atomic > 5. Start Snapshot > - virsh start FA2BASE This process uses libvirt instead of QEMU commands. Adding libvirt mailing list. > > All that works, but my question and issue is this: > > Can you make a snapshot, then go back to the base and ignore that snapshot > like a closed branch, make another snapshot, and then go back and forth > from each to each? > > My reasons for needing this are that I have tools and software that doesnt > play nice together, and would like to keep them separated on different > snapshots, but never really need to have more than one up at a time. > > This would allow me to have only 1 windows license per computer, and the > ability to just change from tool to tool with simple front end to virsh to > remove the disk from the .xml and add the other one. > > So like this: > Tool A is on snapshot A > Tool B is on snapshot B > go through steps 1-5 above to go back and forth. > > I know that I can not merge things back into the base, but I really don't > need to do that, in fact, I can throw away the tool snapshots when new > tools come out, by making new snapshots from the base when new tools come > out. > > We have done this already, but we had an issue where the ability to write > to the snapshots seemed to stop. > > Reason unknown, everything worked one day and next could not write to any > snapshot, but could still load the base and work on it fine. > > This might be the wrong mailing list to post to, if so, could anyone point > out a more appropriate one? > > Tim
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