[Bugs] [Bug 1224894] New: Quota: spurious failures with quota testcases

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1224894

            Bug ID: 1224894
           Summary: Quota: spurious failures with quota testcases
           Product: GlusterFS
           Version: 3.7.0
         Component: quota
          Assignee: bugs at gluster.org
          Reporter: vmallika at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com
        Depends On: 1223798
            Blocks: 1186580 (qe_tracker_everglades), 1219955
                    (glusterfs-3.7.1)



+++ This bug was initially created as a clone of Bug #1223798 +++

Some of the below test cases spuriously failing.
./tests/bugs/distribute/bug-1161156.t
./tests/bugs/quota/bug-1038598.t


Problem is quota enforcer doesn't consider parallel writes and fail to send
EDQUOT and allow to exceed quota with few %.


For now, with this patch we fix the testcases not to send parallel writes.
Bug# 1223658 tracks the parallel write issue with quota.

--- Additional comment from Anand Avati on 2015-05-21 09:13:26 EDT ---

REVIEW: http://review.gluster.org/10878 (Quota: fix testcases not to send
parallel writes for accurate quota enforcement) posted (#1) for review on
master by Vijaikumar Mallikarjuna (vmallika at redhat.com)

--- Additional comment from Anand Avati on 2015-05-21 22:20:14 EDT ---

REVIEW: http://review.gluster.org/10878 (Quota: fix testcases not to send
parallel writes for accurate quota enforcement) posted (#2) for review on
master by Vijaikumar Mallikarjuna (vmallika at redhat.com)

--- Additional comment from Anand Avati on 2015-05-25 04:09:00 EDT ---

REVIEW: http://review.gluster.org/10878 (Quota: fix testcases not to send
parallel writes for accurate quota enforcement) posted (#3) for review on
master by Vijaikumar Mallikarjuna (vmallika at redhat.com)

--- Additional comment from Anand Avati on 2015-05-25 04:16:42 EDT ---

REVIEW: http://review.gluster.org/10878 (Quota: fix testcases not to send
parallel writes for accurate quota enforcement) posted (#4) for review on
master by Vijaikumar Mallikarjuna (vmallika at redhat.com)

--- Additional comment from Anand Avati on 2015-05-25 14:34:28 EDT ---

COMMIT: http://review.gluster.org/10878 committed in master by Raghavendra G
(rgowdapp at redhat.com) 
------
commit 225ff553106396066d68d8c757e5c001f5d9ab15
Author: vmallika <vmallika at redhat.com>
Date:   Mon May 25 13:35:48 2015 +0530

    Quota: fix testcases not to send parallel writes for accurate
    quota enforcement

    Currently quota enforcer doesn't consider parallel writes
    and allows quota to exceed limit where there are high rate
    of parallel writes. Bug# 1223658 tracks the issue.

    This patch fixes the spurious failures by not sending
    parallel writes.
    Using O_SYNC and O_APPEND flags and block size
    not more that 256k (For higher block size NFS client
    splits the block into 256k chinks and does parallel writes)

    Change-Id: I297c164b030cecb87ce5b494c02b09e8b073b276
    BUG: 1223798
    Signed-off-by: vmallika <vmallika at redhat.com>
    Reviewed-on: http://review.gluster.org/10878
    Tested-by: NetBSD Build System
    Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Raghavendra G <rgowdapp at redhat.com>
    Tested-by: Raghavendra G <rgowdapp at redhat.com>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1186580
[Bug 1186580] QE tracker bug for Everglades
https://bugzilla.redhat.com/show_bug.cgi?id=1219955
[Bug 1219955] GlusterFS 3.7.1 tracker
https://bugzilla.redhat.com/show_bug.cgi?id=1223798
[Bug 1223798] Quota: spurious failures with quota testcases
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