Bug 1417027 - option performance.parallel-readdir should honor cluster.readdir-optimize
Summary: option performance.parallel-readdir should honor cluster.readdir-optimize
Alias: None
Product: GlusterFS
Classification: Community
Component: unclassified
Version: 3.10
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Poornima G
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2017-01-27 02:46 UTC by Raghavendra G
Modified: 2017-03-06 17:44 UTC (History)
1 user (show)

Fixed In Version: glusterfs-3.10.0
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Last Closed: 2017-03-06 17:44:28 UTC
Regression: ---
Mount Type: ---
Documentation: ---
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Description Raghavendra G 2017-01-27 02:46:15 UTC
Description of problem: With performance.parallel-readdir enabled, there is a readdir-ahead loaded as a subvolume to DHT. Since readdir-ahead starts pre fetching dentries in opendir, readdir-ahead is not aware of whether cluster.readdir-optimize is enabled in DHT (as DHT uses it only in readdir). This results in fetching all dentries from all subvols irrespective of cluster.readdir-optimize is enabled or not.

The fix is to retain the current logic of filtering out dentries pointing to directories from all but one subvolume even when performance.parallel-readdir is enabled.

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

How reproducible:

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Comment 1 Worker Ant 2017-01-27 02:49:21 UTC
REVIEW: https://review.gluster.org/16461 (Readdir-ahead : Honour readdir-optimise option of dht) posted (#2) for review on release-3.10 by Raghavendra G (rgowdapp@redhat.com)

Comment 2 Worker Ant 2017-01-27 14:01:24 UTC
COMMIT: https://review.gluster.org/16461 committed in release-3.10 by Shyamsundar Ranganathan (srangana@redhat.com) 
commit c1cafe6e314f01d3f07229c0972af5f1017c62cf
Author: Poornima G <pgurusid@redhat.com>
Date:   Thu Dec 8 16:08:40 2016 +0530

    Readdir-ahead : Honour readdir-optimise option of dht
    >Change-Id: I9c5e65b32e316e6a2fc7e1f5c79fce79386b78e2
    >BUG: 1401812
    >Signed-off-by: Poornima G <pgurusid@redhat.com>
    >Reviewed-on: https://review.gluster.org/16071
    >Smoke: Gluster Build System <jenkins@build.gluster.org>
    >CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
    >NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
    >Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
    Change-Id: I9c5e65b32e316e6a2fc7e1f5c79fce79386b78e2
    BUG: 1417027
    Signed-off-by: Poornima G <pgurusid@redhat.com>
    (cherry picked from commit 7c6538f6c8f9a015663b4fc57c640a7c451c87f7)
    Reviewed-on: https://review.gluster.org/16461
    Tested-by: Raghavendra G <rgowdapp@redhat.com>
    Smoke: Gluster Build System <jenkins@build.gluster.org>
    NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
    CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
    Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
    Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>

Comment 3 Shyamsundar 2017-03-06 17:44:28 UTC
This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-3.10.0, please open a new bug report.

glusterfs-3.10.0 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution.

[1] http://lists.gluster.org/pipermail/gluster-users/2017-February/030119.html
[2] https://www.gluster.org/pipermail/gluster-users/

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