Description of problem: A Live Storage Migration 'hung'. The task handling the internal (base) volume copy on the SPM encountered an error, yet the 'copy' (qemu-img convert) appeared to have completed successfully. A subsequent "UnknownTask" error occurred while trying to stop/clear the task. On the engine, the SyncImageGroupDataVDSCommand completed without 'error', yet the LSM sequence just stopped, and so the VmReplicateDiskFinishVDSCommand was never executed. As a result, the symptoms were that the base volume copy seemed to have completed, but the active volume 'block copy' job was still in running. Version-Release number of selected component (if applicable): RHEV 3.6.9 RHEL 7.2 host; vdsm-4.17.35-1.el7 libvirt-1.2.17-13.el7_2.5 qemu-kvm-rhev-2.3.0-31.el7_2.21 How reproducible: Not reproducible. Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
LSM implementation in engine changed drastically in 4.0 (from SEAT to CoCo infra). I couldn't reproduce the issue on latest build. Moving to ON_QA for verification.
Can you pls add steps to reproduce?
(In reply to Eyal Shenitzky from comment #12) > Can you pls add steps to reproduce? There's actually no exact reproducing steps. It seems like a race that happens occasionally. If you didn't encounter this issue since 4.0, we can close the bug on insufficient_data and reopen if the issue is reproduced.
I didn't encounter that issue, I Closing the bug and reopen in case it will be reproduced.