VM snapshot lost after migration

Description a vm snapshot (not disk snapshot) is broken/lost after live migration or power-off

To Reproduce

• create a new virtual machine named test1 and start it

• open the virtual machine in sunstone, navigate to “Snapshots” and create one

• wait for the snapshot to finish

• live migrate vm “test1” to an other hypervisor

• the snapshot is still listed in sunstone, but with virsh snapshot-list <domain> we see that the snapshot is gone

• there’s no way to remove that broken snapshot in sunstone anymore

• create a new virtual machine named test2 and start it

• open the virtual machine in sunstone, navigate to “Snapshots” and create one

• wait for the snapshot to finish

• power off vm “test2”

• snapshot in sunstone is gone

• power on vm “test2”

• snapshot in sunstone is still gone, but with virsh snapshot-list <domain> you can still see the snapshot

Expected behavior In both cases I would expect the snapshot to be still there and correctly shown in Sunstone

Details

• Affected Component: Sunstone, Storage, libvirtd
• Hypervisor: KVM
• Storage: shared fs - TM_MAD=“qcow2”
• Version: 6.0.2

Additional context NaN

Progress Status

• Branch created
• Code committed to development branch
• Testing - QA
• Documentation
• Release notes - resolved issues, compatibility, known issues
• Code committed to upstream release/hotfix branches
• Documentation committed to upstream release/hotfix branches

[christian7007]

Actually, that feature was never supported. Libvirt will fail if trying to migrate a VM with snapshots, so they needs to be removed, which is a different issue than the poweroff.

We’ve already scheduled this issue for 6.2.1 and we’ll look on what’s the best way of recreating the snapshots after the live migration.

[rsmontero]

Merged