[Engine-devel] Adding atomic restore snapshot command at backend

[Michael Pasternak]

Currently 'restore snapshot' done in two steps on a client side:

1. TryBackToAllSnapshotsOfVm
2. RestoreAllSnapshots

This implementation creates race condition on 1 and therefore unstable & bug prone,
i suggested refactoring 2 to include 1 as single atomic operation at backend.


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Michael Pasternak
RedHat, ENG-Virtualization R&D