Backport of: http://review.gluster.org/10916

Because both bricks in the replica pair of patchy are in the same node,
both full healer threads within the same shd try and fail to acquire
non-blocking locks when each one gets lock on one of the bricks,
causing heal to fail occasionally.

Now heals are triggered from the mount as part of inode refresh.
And because the AFR on the mount graph
a. does not treat presence of dirty xattrs as something that needs
   a heal (this is true for dirs fool_heal and fool_me) and
b. does not recursively heal the entire hierarchy of subdirs and their
   entries in one shot (this is true with source_creations_heal/dir1),

index heal is used to heal fool_heal, fool_me and
source_creations_heal/dir1 wherein only one brick (which is the brick that
contains the good copy of source_creations_heal/dir_1: brick-1) has all
the gfids to be healed copied into its indices/xattrop directory.

Change-Id: Ibafccfb04967c66066cc58110b767bf118755f90
BUG: 1225077
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/10922
Tested-by: NetBSD Build System
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

- Improve Linux stat(1) emulation for BSD: %t and %T should be 0 for non
  device nodes.
- Remove what seems like a typo in entry-self-heal.t, which blocks in
  Linux stat(1) emulation for BSD.

BUG: 1129939
Change-Id: I7635aa105e6d309cdb74608bdaba4135c7c00dd4
Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org>
Reviewed-on: http://review.gluster.org/9217
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

Change-Id: I9390bc9274eb2485af541c4044bac12e48c44064
BUG: 1128721
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/8539
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>