[Bugs] [Bug 1715921] New: uss.t tests times out with brick-mux regression

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1715921

            Bug ID: 1715921
           Summary: uss.t tests times out with brick-mux regression
           Product: GlusterFS
           Version: mainline
            Status: NEW
         Component: snapshot
          Assignee: bugs at gluster.org
          Reporter: rabhat at redhat.com
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Description of problem:

uss.t testcase sometimes fails due to timeout whenever run with brick-mux
enabled.

One of the results of the failure in the regression run can be found here at
[1]

Found that, the reason for this is because in the test that leads to the
timeout we do the following things.

Create a file (aaa in the testcase)
Take a snapshot (snap6)
Access it via uss
Delete the file (aaa)
Delete the snapshot (snap6)
Again create snapshot (snap6 i.e. same name as the one deleted above)
Again access the file 'aaa' expecting it to fail (as the file was not present
                                                  at the time of snapshot)

But we access snap6 in the last test too soon. The previous instance of snap6
might still be going through its cleanup phase causing hangs etc.

So, after deletion of the snapshot (snap6) wait to ensure that glusterd
recognizes it to be not there, before proceeding with creation of the snapshot
with the same name.

[1] https://build.gluster.org/job/regression-on-demand-multiplex/613/

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


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