Created attachment 1168465 [details] stacktrace.txt Description of problem: Creating template from VM snapshot causes frontend ClassCastException: UnitVmModel.updateLabelList shouldn't be probably called from UnitVmModel constructor since it uses `isNew` property which may not be set when constructor is called. Calling if from UnitVmModel.initialize() may be enough. See VmSnapshotListModel#cloneTemplate. Version-Release number of selected component (if applicable): 4.1 master, commit 42756c6 How reproducible: 100% Steps to Reproduce: 1. Create a snapshot of some VM 2. Select the snapshot 3. Click "Make template" Actual results: FE exception thrown, dialog shown with progress circle Additional notes: See bug 1346095 which also prevents creating a template from vm snapshot.
@Doron: it is in a virt dialog but the regression has been introduced by https://gerrit.ovirt.org/#/c/57903 which adds an SLA feature of "affinity labels" -> moving back to SLA
The fix for this issue should be included in oVirt 4.1.0 beta 1 released on December 1st. If not included please move back to modified.
I tried to create snapshot from stopped/running VM, without/with memory. Making template from it was without error and successful. Also template from already created snapshot is OK. verified in ovirt-engine-webadmin-portal-4.1.0-0.3.beta2.el7.noarch