[Bugs] [Bug 1359879] New: Cleanup hanging on NetBSD machines

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1359879

            Bug ID: 1359879
           Summary: Cleanup hanging on NetBSD machines
           Product: GlusterFS
           Version: mainline
         Component: project-infrastructure
          Assignee: bugs at gluster.org
          Reporter: jdarcy at redhat.com
                CC: bugs at gluster.org, gluster-infra at gluster.org



One of my more frequent "housekeeping" tasks lately has been checking for hung
regression tests on NetBSD machines.  The first symptom is that the last few
lines of the console output look like this:

> 07:19:07 Build GlusterFS
> 07:19:07 ***************
> 07:19:07 
> 07:19:07 + /opt/qa/build.sh

When I log in to the machine, more often than not I see a bunch of processes
sitting in various versions of umount as part of the cleanup from the previous
test.  There will also typically be one glusterfs (client) process that should
have exited in response to the umount request, but for some reason hasn't done
so.  Manually sending SIGKILL to that process gets things unstuck and the next
test usually runs properly after that.

This is a relatively new phenomenon.  I didn't start seeing this particular
syndrome until 1-2 months ago, so something must have changed to cause it. 
Perhaps one of our local NetBSD experts could look into it so we can still
claim Gluster runs on toasters.

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