[Bugs] [Bug 1583016] New: libgfapi: glfs init fails on afr volume with ctime feature enabled

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1583016

            Bug ID: 1583016
           Summary: libgfapi: glfs init fails on afr volume with ctime
                    feature enabled
           Product: GlusterFS
           Version: 4.1
         Component: libgfapi
          Assignee: bugs at gluster.org
          Reporter: khiremat at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org
        Depends On: 1582516



+++ This bug was initially created as a clone of Bug #1582516 +++

Description of problem:
With ctime feature enabled on afr volume libgfapi programs fail.
Basically glfs_init fails.

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

How reproducible:
Always

Steps to Reproduce:
1.  Create replicated gluster volume
2.  Write and run a libgfapi program to use the volume


Actual results:
libgfapi program fails on afr volume.

Expected results:
libgfapi program should not fail on afr volume.


Additional info:

--- Additional comment from Worker Ant on 2018-05-25 09:13:22 EDT ---

REVIEW: https://review.gluster.org/20086 (libgfapi: Fix lookup on root) posted
(#1) for review on master by Kotresh HR

--- Additional comment from Worker Ant on 2018-05-28 00:57:49 EDT ---

COMMIT: https://review.gluster.org/20086 committed in master by "Amar Tumballi"
<amarts at redhat.com> with a commit message- libgfapi: Fix lookup on root

Lookup on root was sending "/" as the path.
This will break the basename calculation in
loc_copy and hence lookup on root was failing
if the loc_copy was involved in the stack.

With ctime, a first lookup on root initiates
a metadata self heal because of ctime xattr
not being same on all afr subvolumes. This
results in loc_copy and hence the failure
of lookup.

Fix would be to send path with "." for the root.

fixes: bz#1582516
Change-Id: Iafe4b99f249a4f5034ad34c1d30590de0e35aa0d
Signed-off-by: Kotresh HR <khiremat at redhat.com>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1582516
[Bug 1582516] libgfapi: glfs init fails on afr volume with ctime feature
enabled
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