[Bugs] [Bug 1219066] New: Data Tiering : Adding performance to unlink/link/rename in CTR Xlator

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1219066

            Bug ID: 1219066
           Summary: Data Tiering : Adding performance to
                    unlink/link/rename in CTR Xlator
           Product: GlusterFS
           Version: 3.7.0
         Component: tiering
          Assignee: bugs at gluster.org
          Reporter: josferna at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org
        Depends On: 1217786



+++ This bug was initially created as a clone of Bug #1217786 +++

Description of problem:
ctr/libgfdb: Performance enhancer for unlink/create/rename/link fops

1) ctr_link_consistency option for ctr xaltor is provided so that
   the user can choose to switch it on or off.
   /* For link consistency we do a double update i.e mark the link
   * during the wind and during the unwind we update/delete the link.
   * This has a performance hit. We give a choice here whether we need
   * link consistency to be spoton or not using link_consistency flag.
   * This will have only one link update */
2) In delete the wind time recording is moved to unwind path.
   /* Special performance case:
   * Updating wind time in unwind for delete. This is done here
   * as in the wind path we will not know whether its the last
   * link or not. For a last link there is not use to update any
   * wind or unwind time!*/

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


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

--- Additional comment from Anand Avati on 2015-05-01 11:57:29 EDT ---

REVIEW: http://review.gluster.org/10170 (ctr/libgfdb: Performance enhancer for
unlink/create/rename/link fops) posted (#3) for review on master by Joseph
Fernandes (josferna at redhat.com)

--- Additional comment from Anand Avati on 2015-05-01 12:10:37 EDT ---

COMMIT: http://review.gluster.org/10170 committed in master by Kaleb KEITHLEY
(kkeithle at redhat.com) 
------
commit 4d118cb5ee99b8401d70678fc3b3576ad938999d
Author: Joseph Fernandes <josferna at redhat.com>
Date:   Thu Apr 9 15:07:54 2015 +0530

    ctr/libgfdb: Performance enhancer for unlink/create/rename/link fops

    1) ctr_link_consistency option for ctr xaltor is provided so that
       the user can choose to switch it on or off.
       /* For link consistency we do a double update i.e mark the link
       * during the wind and during the unwind we update/delete the link.
       * This has a performance hit. We give a choice here whether we need
       * link consistency to be spoton or not using link_consistency flag.
       * This will have only one link update */

    2) In delete the wind time recording is moved to unwind path.
       /* Special performance case:
       * Updating wind time in unwind for delete. This is done here
       * as in the wind path we will not know whether its the last
       * link or not. For a last link there is not use to update any
       * wind or unwind time!*/

    Change-Id: I209472fb816f939db4a868b97ba053b028f17ea6
    BUG: 1217786
    Signed-off-by: Joseph Fernandes <josferna at redhat.com>
    Reviewed-on: http://review.gluster.org/10170
    Reviewed-by: Dan Lambright <dlambrig at redhat.com>
    Tested-by: Gluster Build System <jenkins at build.gluster.com>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1217786
[Bug 1217786] Data Tiering : Adding performance to unlink/link/rename in
CTR Xlator
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