On Tue, Aug 6, 2019 at 11:25 AM Janek Bevendorff
The fix has been merged into master and will be backported soon. I've
also done testing in a large cluster to confirm the issue you found.
Using multiple processes to create files as fast as possible in a
single client reliably reproduced the issue. The MDS cannot recall
capabilities fast enough when the internal upkeep thread ran every 5
seconds. Moving the cache trimming and capability recall to a separate
thread running every second resolved the issue.
Patrick Donnelly, Ph.D.
He / Him / His
Senior Software Engineer
Red Hat Sunnyvale, CA