cluster/afr: Avoid self-healing extended attribute used by SELinux.

Since removexattr() fails to remove "security.selinux" in a system 
where SELinux is enforcing, xattr self-healing fails. 
As a consequence of this, user extended attributes are not being healed.
Added a check in afr to prune SELinux xattr from the dictionary 
used for removing xattrs from the sink.

Minor changes in tests and md-cache as well.

Signed-off-by: Vijay Bellur <vbellur@redhat.com>
Change-Id: I854bfc0098dde812ce2afe64b125ee40c04bdeb1
BUG: 957877
Reviewed-on: http://review.gluster.org/4905
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/afr.rc b/tests/afr.rc
new file mode 100644
index 00000000000..60ea1b7f123
--- /dev/null
+++ b/tests/afr.rc
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+#count the number of entries marked for self-heal
+#in brick $1's index
+
+function count_sh_entries()
+{
+    val1=0
+    for g in `ls $1/.glusterfs/indices/xattrop`
+    do
+	val1=$(( val1 + 1 ))
+    done
+
+    echo $val1;
+}