[lago-devel] Re: Snapshot with memory of Engine/host VMs?

On Fri, May 18, 2018 at 11:48 PM, Milan Zamazal <mzamazal(a)redhat.com&gt; wrote: > Hi, I have been playing with using Lago snapshots to restart oVirt > system tests from a certain point without all the preceding > initialization and tests. The primary purpose is to save time when > running a suite over different data center compatibility versions but it > could be also useful e.g. when writing and debugging tests. > > However since `lagocli snapshot' makes disk-only snapshots the VMs get > restarted when they are reverted. This may cause various problems. For > instance, when I snapshot/revert before running add_dc test then > verify_notifier test fails -- I assume due to the event being initiated > before the snapshot and completed after the snapshot, so it's missing in > after-revert runs. Snapshots with memory should resolve similar issues. > Is it possible to make such snapshots in Lago? > It's not entirely clear to me that this will work well for all flows. For example, I don't anticipate network connections (storage, storage, storage...) to persist well. This will make the whole exercise pointless, regretfully. (or in other words: this is when I gave up on the same idea).