afr: Ignore gluster internal (virtual) xattrs in metadata heal check

Backport of http://review.gluster.org/#/c/15548/

Problem:
In arbiter configuration, posix-xlator in the arbiter brick always sets the
GF_CONTENT_KEY in the response dict with a value 0. If the file size on the
data bricks is more than quick-read's max-file-size (64kb default), those
bricks don't set the key. Because of this difference in the no. of dict
elements, afr triggers metadata heal in lookup code path, in turn leading to
extra lookups+inodelks.

Fix:
Changed afr dict comparison logic to ignore all virtual xattrs and the on-disk
ones that we should not be healing.

Change-Id: I05730bdd39d8fb0b9a49a5fc9c0bb01f0d3bb308
BUG: 1377193
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/15578
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: Pranith Kumar Karampuri <pkarampu@redhat.com>

0 files changed, 0 insertions, 0 deletions