Michael Kublin has submitted this change and it was merged. Change subject: engine: Null Pointer Exception when during preview mode action, service ovirt-engine restart ...................................................................... engine: Null Pointer Exception when during preview mode action, service ovirt-engine restart The following bug was caused because of wrong member name, which was caused by not passing serialization by dstSnapshotId, and after restoring it from DB after restart its value was Guid.Empty, so because of that we usually failed at endSuccessfully because of NullPointerException. Thise caused for VM to be stuck in status locked. Change-Id: I273369d20ae3db3e9598f33ff75eb094dd420f65 Bug-Url: https://bugzilla.redhat.com/871802 Signed-off-by: Michael Kublin <mkublin(a)redhat.com&gt; --- M backend/manager/modules/common/src/main/java/org/ovirt/engine/core/common/action/TryBackToAllSnapshotsOfVmParameters.java 1 file changed, 3 insertions(+), 3 deletions(-) Approvals: Michael Kublin: Verified; Looks good to me, approved -- To view, visit http://gerrit.ovirt.org/11828 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: merged Gerrit-Change-Id: I273369d20ae3db3e9598f33ff75eb094dd420f65 Gerrit-PatchSet: 2 Gerrit-Project: ovirt-engine Gerrit-Branch: master Gerrit-Owner: Michael Kublin <mkublin(a)redhat.com&gt; Gerrit-Reviewer: Allon Mureinik <amureini(a)redhat.com&gt; Gerrit-Reviewer: Michael Kublin <mkublin(a)redhat.com&gt; Gerrit-Reviewer: Omer Frenkel <ofrenkel(a)redhat.com&gt;