Description of problem: tcmu-runner cannot gracefully handle restarting when there is active IO and the fix requires a kernel change. In the meantime, the workaround for this issue is to stop the ceph-iscsi-gw service first (so that the gateway is cleanly shut down), restart tcmu-runner, and then restart ceph-iscsi-gw to bring the target portal back online. Version-Release number of selected component (if applicable): 1.3 How reproducible: 100% Steps to Reproduce: 1. attempt to restart tcmu-runner with active IO workloas Actual results: The process will hang and/or crash. Expected results: You can gracefully restart the daemon. Additional info:
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:2819