gluster: Sometimes Brick process is crashed at the time of stopping brick

Problem: Sometimes brick process is getting crashed at the time
         of stop brick while brick mux is enabled.

Solution: Brick process was getting crashed because of rpc connection
          was not cleaning properly while brick mux is enabled.In this patch
          after sending GF_EVENT_CLEANUP notification to xlator(server)
          waits for all rpc client connection destroy for specific xlator.Once rpc
          connections are destroyed in server_rpc_notify for all associated client
          for that brick then call xlator_mem_cleanup for for brick xlator as well as
          all child xlators.To avoid races at the time of cleanup introduce
          two new flags at each xlator cleanup_starting, call_cleanup.

BUG: 1544090
Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>

Note: Run all test-cases in separate build (https://review.gluster.org/#/c/19700/)
      with same patch after enable brick mux forcefully, all test cases are
      passed.

Change-Id: Ic4ab9c128df282d146cf1135640281fcb31997bf
updates: bz#1544090

1 files changed, 29 insertions, 2 deletions

diff --git a/tests/volume.rc b/tests/volume.rc
index 44428606711..ea8cfb666a1 100644
--- a/tests/volume.rc
+++ b/tests/volume.rc
@@ -801,26 +801,53 @@ function count_sh_entries()
     ls $1/.glusterfs/indices/xattrop | grep -v "xattrop-" | wc -l
 }
 
+function check_brick_multiplex() {
+        cnt="$(ls /var/log/glusterfs/bricks|wc -l)"
+        local ret=$($CLI volume info|grep "cluster.brick-multiplex"|cut -d" " -f2)
+        local bcnt="$(brick_count)"
+
+        if [ $bcnt -ne 1 ]; then
+           if [ "$ret" = "on" ] || [ $cnt -eq 1 ]; then
+              echo "Y"
+           else
+              echo "N"
+           fi
+        else
+           echo "N"
+        fi
+}
+
 function get_fd_count {
         local vol=$1
         local host=$2
         local brick=$3
         local fname=$4
+        local val="$(check_brick_multiplex)"
         local gfid_str=$(gf_gfid_xattr_to_str $(gf_get_gfid_xattr $brick/$fname))
         local statedump=$(generate_brick_statedump $vol $host $brick)
-        local count=$(grep "gfid=$gfid_str" $statedump -A2 -B1 | grep $brick -A3 | grep -w fd-count | cut -f2 -d'=' | tail -1)
+        if [ $val == "N" ]; then
+            count=$(grep "gfid=$gfid_str" $statedump -A2 | grep fd-count | cut -f2 -d'=' | tail -1)
+        else
+            count=$(grep "${brick}.active.1" -A3 $statedump | grep "gfid=$gfid_str" -A2 | grep fd-count | cut -f2 -d'=' | tail -1)
+        fi
         rm -f $statedump
         echo $count
 }
 
+
 function get_active_fd_count {
         local vol=$1
         local host=$2
         local brick=$3
         local fname=$4
+        local val="$(check_brick_multiplex)"
         local gfid_str=$(gf_gfid_xattr_to_str $(gf_get_gfid_xattr $brick/$fname))
         local statedump=$(generate_brick_statedump $vol $host $brick)
-        local count=$(grep "gfid=$gfid_str" $statedump -A2 -B1 | grep $brick -A3 | grep -w active-fd-count | cut -f2 -d'=' | tail -1)
+        if [ $val == "N" ]; then
+            count=$(grep "gfid=$gfid_str" $statedump -A2 | grep fd-count | cut -f2 -d'=' | tail -1)
+        else
+            count=$(grep "${brick}.active.1" -A3 $statedump | grep "gfid=$gfid_str" -A2 | grep fd-count | cut -f2 -d'=' | tail -1)
+        fi
         rm -f $statedump
         echo $count
 }