[Bugs] [Bug 1258717] New: gluster-nfs : contents of export file is not updated correctly in its context

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1258717

            Bug ID: 1258717
           Summary: gluster-nfs : contents of export file is not updated
                    correctly in its context
           Product: GlusterFS
           Version: 3.7.5
         Component: nfs
          Keywords: Triaged
          Severity: medium
          Priority: medium
          Assignee: bugs at gluster.org
          Reporter: jthottan at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com,
                    kkeithle at redhat.com, ndevos at redhat.com,
                    rwareing at fb.com, shreyas.siravara at gmail.com,
                    skoduri at redhat.com, vagarwal at redhat.com
        Depends On: 1256352



+++ This bug was initially created as a clone of Bug #1256352 +++

Description of problem:

The following tests(50,51) in mount-nfs-auth.t were failing spuriously for
NETBSD machines. In those tests, nfs client is only allowed for reads. Here
even though export file is updated correctly but it is not reflected in
nfs-server context. So write will be allowed for those clients.

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

How reproducible:
10% when mount-nfs-auth.t executed in NETBSD machine.(Spurious failure)

Steps to Reproduce:
Run mount-nfs-auth.t in infinite loop . The test will fail at 50,51 cases(which
checks for read-only client) at some point.

Actual results:
Servers allow write operation 

Expected results:
Server should not allow write operation.

Additional info:

It seems to be when contents of export file are updated , then
_mnt3_auth_param_refresh_thread() should call _mnt3_has_file_changed(). But it
is not happening for those above mentioned tests which can be understand from
nfs-server log.

The following logs were missing after updating the export file :

[MSGID: 112147] [mount3.c:3720:_mnt3_auth_param_refresh_thread] 0-nfs-mount:
File /autobuild/install/var/db/glusterd/nfs/exports changed, updating exports,

[MSGID: 112151] [mount3.c:3752:_mnt3_auth_param_refresh_thread] 0-nfs-mount:
Purging auth cache

--- Additional comment from Anand Avati on 2015-08-31 01:34:00 EDT ---

REVIEW: http://review.gluster.org/12006 (tests : workaround for the spourious
failure in mount-nfs-auth.t) posted (#2) for review on master by jiffin tony
Thottan (jthottan at redhat.com)

--- Additional comment from Anand Avati on 2015-08-31 03:28:46 EDT ---

REVIEW: http://review.gluster.org/12006 (tests : workaround for the spurious
failure in mount-nfs-auth.t) posted (#3) for review on master by Raghavendra
Talur (rtalur at redhat.com)

--- Additional comment from Anand Avati on 2015-08-31 15:00:19 EDT ---

COMMIT: http://review.gluster.org/12006 committed in master by Niels de Vos
(ndevos at redhat.com) 
------
commit 9f52d22690b3b0aac0a736eb15fe649fde6286b5
Author: Jiffin Tony Thottan <jthottan at redhat.com>
Date:   Mon Aug 24 18:01:19 2015 +0530

    tests : workaround for the spurious failure in mount-nfs-auth.t

    Change-Id: I459a0c60743291a2e164a5e0a76a7e2577afdae0
    BUG: 1256352
    Signed-off-by: Jiffin Tony Thottan <jthottan at redhat.com>
    Reviewed-on: http://review.gluster.org/12006
    Reviewed-by: Niels de Vos <ndevos at redhat.com>
    Tested-by: NetBSD Build System <jenkins at build.gluster.org>
    Tested-by: Gluster Build System <jenkins at build.gluster.com>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1256352
[Bug 1256352] gluster-nfs : contents of export file is not updated
correctly in its context
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