[Bugs] [Bug 1262750] New: DHT: mount hangs when directories are created-deleted continuously from multiple mounts

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1262750

            Bug ID: 1262750
           Summary: DHT: mount hangs when directories are created-deleted
                    continuously from multiple mounts
           Product: GlusterFS
           Version: mainline
         Component: distribute
          Assignee: bugs at gluster.org
          Reporter: sabansal at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Description of problem:
DHT: mount hangs when directories are created and deleted continuously from
multiple mounts

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.Create a dist-rep volume
2.Create and delete directories continuously from mount
3.Perform step 2 parallely from multiple mounts (say 4)

Actual results:
One or more mount hangs after sometime

Expected results:
Mount should not hang

Additional info:
Due to existing race between rmdir/selfheal, sometimes directories end up
having gfid mismatch. Hence AFR may unlock on different gfid and not on the one
it locked initially thereby blocking another client.

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