glusterd/rebalance: initialize defrag variable after glusterd restart

During reblance restart after glusterd restarted, we are not
connecting to rebalance process from glusterd, because the
defrag variable in volinfo will be null.

Initializing the variable will connect the rpc

Change-Id: Id820cad6a3634a9fc976427fbe1c45844d3d4b9b
BUG: 1303028
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Reviewed-on: http://review.gluster.org/13319
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/tests/bugs/glusterd/bug-1303028-Rebalance-glusterd-rpc-connection-issue.t b/tests/bugs/glusterd/bug-1303028-Rebalance-glusterd-rpc-connection-issue.t
new file mode 100644
index 00000000000..a2a10ee5ef6
--- /dev/null
+++ b/tests/bugs/glusterd/bug-1303028-Rebalance-glusterd-rpc-connection-issue.t
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+. $(dirname $0)/../../tier.rc
+
+
+# Creates a tiered volume with pure distribute hot and cold tiers
+# Both hot and cold tiers will have an equal number of bricks.
+
+function create_dist_tier_vol () {
+        mkdir $B0/cold
+        mkdir $B0/hot
+        TEST $CLI volume create $V0 $H0:$B0/cold/${V0}{1..3}
+        TEST $CLI volume set $V0 performance.quick-read off
+        TEST $CLI volume set $V0 performance.io-cache off
+        TEST $CLI volume start $V0
+        TEST $CLI volume attach-tier $V0 $H0:$B0/hot/${V0}{1..2}
+        TEST $CLI volume set $V0 cluster.tier-mode test
+}
+
+function non_zero_check () {
+if [ "$1" -ne 0 ]
+then
+        echo "0"
+else
+        echo "1"
+fi
+}
+
+
+cleanup;
+
+#Basic checks
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume status
+
+
+#Create and start a tiered volume
+create_dist_tier_vol
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT 0 tier_deamon_check
+sleep 2   #wait for some time to run tier daemon
+time_before_restarting=$(rebalance_run_time $V0);
+
+#checking for elapsed time after sleeping for two seconds.
+EXPECT "0" non_zero_check $time_before_restarting;
+
+#Difference of elapsed time should be positive
+
+kill -9 $(pidof glusterd);
+TEST glusterd;
+sleep 2;
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "0" tier_deamon_check;
+time1=$(rebalance_run_time $V0);
+EXPECT "0" non_zero_check $time1;
+sleep 4;
+time2=$(rebalance_run_time $V0);
+EXPECT "0" non_zero_check $time2;
+diff=`expr $time2 - $time1`
+EXPECT "0" non_zero_check $diff;