Itamar Heim has submitted this change and it was merged. Change subject: core: avoid db deadlock and unneeded db updates for images ...................................................................... core: avoid db deadlock and unneeded db updates for images When adding a VM from template (as part of pool or not), CreateSnapshotFromTemplateCommand is being executed and when the operation ends its end method is being called for each of the disks. In the end method there's an attempt to unlock the template image which causes to numerous issues: 1. There are attempts to update the template disks statuses to ok, as the updates aren't ordered and are executed for each added vm based on that template - db deadlocks occur. 2.Currently the template disks aren't being locked at all (which should be inspected regardless), so there's currently no point in unlocking them. The fix which is introduced is to not update the image status if it's already in the desired status, which will reduce the updates count in general and will prevent possible db deadlocks in the provided scenarios. Change-Id: I26a09ce674cfefd59819f3edf95accab31f0e80e Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1047163 Signed-off-by: Arik Hadas <ahadas(a)redhat.com&gt; Signed-off-by: Liron Aravot <laravot(a)redhat.com&gt; --- M backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/BaseImagesCommand.java 1 file changed, 1 insertion(+), 1 deletion(-) Approvals: Omer Frenkel: Looks good to me, approved Arik Hadas: Verified Liron Ar: Looks good to me, but someone else must approve -- To view, visit http://gerrit.ovirt.org/22844 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: merged Gerrit-Change-Id: I26a09ce674cfefd59819f3edf95accab31f0e80e Gerrit-PatchSet: 1 Gerrit-Project: ovirt-engine Gerrit-Branch: ovirt-engine-3.3 Gerrit-Owner: Arik Hadas <ahadas(a)redhat.com&gt; Gerrit-Reviewer: Arik Hadas <ahadas(a)redhat.com&gt; Gerrit-Reviewer: Itamar Heim <iheim(a)redhat.com&gt; Gerrit-Reviewer: Liron Ar <laravot(a)redhat.com&gt; Gerrit-Reviewer: Omer Frenkel <ofrenkel(a)redhat.com&gt; Gerrit-Reviewer: automation(a)ovirt.org Gerrit-Reviewer: oVirt Jenkins CI Server