Description of problem: In tcmu-runner, until now there is no check to defend on multiple runs of daemon within the same node. So there is a possibility of two or more runner instances running on the same node at a given time. PR: https://github.com/open-iscsi/tcmu-runner/pull/418 The patch fixing takes a non blocking lock on 'tcmu.lock' file, if it succeeds only then daemon is allowed to run, if there is already a lock on lock-file (taken by some other instance of tcmu-runner) we will exit.
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/RHEA-2018:2691