cluster/afr: Fix spurious metadata self-healsv3.6.0beta2

        Backport of http://review.gluster.org/8709

- Added logging for metadata and data self-heals which helped
  in debugging this issue.
- Added checks to skip self-heals when no sinks are available to heal

BUG: 1145987
Change-Id: Ide03af4f531a1280ec8ad95b627285df4d7bc42d
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/8832
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c
index d1bce6284a8..3e745e2491e 100644
--- a/xlators/cluster/afr/src/afr-common.c
+++ b/xlators/cluster/afr/src/afr-common.c
@@ -1198,8 +1198,8 @@ xattr_is_equal (dict_t *this, char *key1, data_t *value1, void *data)
  * We need to do both because ignoring glusterfs' internal xattrs
  * happens only in xattr_is_equal().
  */
-static gf_boolean_t
-dicts_are_equal (dict_t *dict1, dict_t *dict2)
+gf_boolean_t
+afr_xattrs_are_equal (dict_t *dict1, dict_t *dict2)
 {
         int ret = 0;
 
@@ -1596,7 +1596,8 @@ afr_can_start_metadata_self_heal(call_frame_t *frame, xlator_t *this)
                 }
 
                 /*Check if xattrs need heal*/
-                if (!dicts_are_equal (replies[first].xdata, replies[i].xdata))
+                if (!afr_xattrs_are_equal (replies[first].xdata,
+                                           replies[i].xdata))
                         start = _gf_true;
         }