[Bugs] [Bug 1591193] New: lookup not assigning gfid if file is not present in all bricks of replica

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1591193

            Bug ID: 1591193
           Summary: lookup not assigning gfid if file is not present in
                    all bricks of replica
           Product: GlusterFS
           Version: mainline
         Component: replicate
          Assignee: bugs at gluster.org
          Reporter: ravishankar at redhat.com
                CC: bugs at gluster.org



Description of problem:


    commit 20fa80057eb430fd72b4fa31b9b65598b8ec1265 introduced a regression
    wherein if a file is present in only 1 brick of replica *and* doesn't
    have a gfid associated with it, it doesn't get healed upon the next
    lookup from the client. 


Found this while automating a glusto-test case which adds files directly from
the backend and expects lookup to assign gfid and complete the heal.

Steps to reproduce:
- Create a 1x3 vol and add different files to different bricks of the replica
directly on the backend.
- Try a lookup on the files individually from the client. It will fail with
ESTALE.

Comments:
While adding files directly to the bricks is not a supported usecase,  we could
hit this in the client FOP path too if the bricks go down at the right time
etc.

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