[Bugs] [Bug 1146413] New: Symlink mtime changes when rebalancing

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1146413

            Bug ID: 1146413
           Summary: Symlink mtime changes when rebalancing
           Product: GlusterFS
           Version: 3.6.0
         Component: distribute
          Severity: high
          Assignee: gluster-bugs at redhat.com
          Reporter: ndevos at redhat.com
                CC: anders.blomdell at control.lth.se, bugs at gluster.org,
                    gluster-bugs at redhat.com
        Depends On: 1122443
            Blocks: 1117822 (glusterfs-3.6.0)



+++ This bug was initially created as a clone of Bug #1122443 +++
+++                                                           +++
+++ This bug is used for backporting the change to 3.6.0.     +++
+++                                                           +++

Description of problem:

When migrating approx 1 GB of data data by doing 

  gluster volume add-brick test new-host1:/path/to/new/brick ...
  gluster volume remove-brick old-host1:/path/to/old/brick ... start
  ... wait for removal to finish
  gluster volume remove-brick old-host1:/path/to/old/brick ... commit

on a 3*4 -> 6*4 -> 3*4 gluster [version  3.7dev-0.9.git5b8de97] approximately
40% of the symlinks change their mtime to the time they were copied. 


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

3.7dev-0.9.git5b8de97

How reproducible:

Unknown (once so far), will try to come up with a reproducible (and hopefully
smaller) test case.

--- Additional comment from Anand Avati on 2014-07-29 17:15:30 CEST ---

REVIEW: http://review.gluster.org/8383 (Symlink mtime changes when rebalancing)
posted (#1) for review on master by Anders Blomdell
(anders.blomdell at control.lth.se)

--- Additional comment from Anand Avati on 2014-07-29 18:47:54 CEST ---

REVIEW: http://review.gluster.org/8383 (Symlink mtime changes when rebalancing)
posted (#2) for review on master by Anders Blomdell
(anders.blomdell at control.lth.se)

--- Additional comment from Anand Avati on 2014-07-29 19:12:55 CEST ---

REVIEW: http://review.gluster.org/8383 (Symlink mtime changes when rebalancing)
posted (#3) for review on master by Anders Blomdell
(anders.blomdell at control.lth.se)

--- Additional comment from Anand Avati on 2014-07-30 12:30:38 CEST ---

REVIEW: http://review.gluster.org/8383 (Symlink mtime changes when rebalancing)
posted (#4) for review on master by Anders Blomdell
(anders.blomdell at control.lth.se)

--- Additional comment from Anand Avati on 2014-07-31 18:08:06 CEST ---

COMMIT: http://review.gluster.org/8383 committed in master by Anand Avati
(avati at redhat.com) 
------
commit a278c2aecedfbe17e2749109d73b292ca25ff439
Author: Anders Blomdell <anders.blomdell at control.lth.se>
Date:   Tue Jul 29 17:11:20 2014 +0200

    Symlink mtime changes when rebalancing

    Added mtime preservation for special files during rebalance.

    Change-Id: If04921d4d66853fde8b4d8a3ab748790864f8f42
    BUG: 1122443
    Signed-off-by: Anders Blomdell <anders.blomdell at control.lth.se>
    Reviewed-on: http://review.gluster.org/8383
    Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Shyamsundar Ranganathan <srangana at redhat.com>
    Reviewed-by: Harshavardhana <harsha at harshavardhana.net>
    Reviewed-by: Anand Avati <avati at redhat.com>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1117822
[Bug 1117822] Tracker bug for GlusterFS 3.6.0
https://bugzilla.redhat.com/show_bug.cgi?id=1122443
[Bug 1122443] Symlink mtime changes when rebalancing
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