The fix has been merged into master and will be backported soon.
Amazing, thanks!
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 GPG: 19F28A586F808C2402351B93C3301A3E258DD79D
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