stop: Unmount cephFS volumes

When stop.sh is run while the cephFS is mounted,
mount processes are retained and can't be killed.
And also the mount and df commands hang after this.
This patch unmounts the mounted volumes cleanly.

Signed-off-by: Kotresh HR <khiremat@redhat.com>

diff --git a/src/stop.sh b/src/stop.sh
index a2073ad546b75441ad4ceacf131cc67bdbca425c..0a71752d1d4b9acc93fbeb41f2adcda0ffd59b4f 100755 (executable)
--- a/src/stop.sh
+++ b/src/stop.sh
@@ -38,6 +38,36 @@ do_killall() {
     $SUDO killall -u $MYNAME $1
 }
 
+do_umountall() {
+    #VSTART_IP_PORTS is of the format as below
+    #"[v[num]:IP:PORT/0,v[num]:IP:PORT/0][v[num]:IP:PORT/0,v[num]:IP:PORT/0]..."
+    VSTART_IP_PORTS=$(bin/ceph mon metadata 2>/dev/null | jq -j '.[].addrs')
+
+    #SRC_MNT_ARRAY is of the format as below
+    #SRC_MNT_ARRAY[0] = IP:PORT,IP:PORT,IP:PORT:/
+    #SRC_MNT_ARRAY[1] = MNT_POINT1
+    #SRC_MNT_ARRAY[2] = IP:PORT:/ #Could be mounted using single mon IP
+    #SRC_MNT_ARRAY[3] = MNT_POINT2
+    #...
+    SRC_MNT_ARRAY=($(findmnt -t ceph -n --raw --output=source,target))
+    LEN_SRC_MNT_ARRAY=${#SRC_MNT_ARRAY[@]}
+
+    for (( i=0; i<${LEN_SRC_MNT_ARRAY}; i=$((i+2)) ))
+    do
+      # The first IP:PORT among the list is checked against vstart monitor IP:PORTS
+      IP_PORT1=$(echo ${SRC_MNT_ARRAY[$i]} | awk -F ':/' '{print $1}' | awk -F ',' '{print $1}')
+      if [[ "$VSTART_IP_PORTS" == *"$IP_PORT1"* ]]
+      then
+        CEPH_MNT=${SRC_MNT_ARRAY[$((i+1))]}
+        [ -n "$CEPH_MNT" ] && sudo umount -f $CEPH_MNT
+      fi
+    done
+
+    #Get fuse mounts of the cluster
+    CEPH_FUSE_MNTS=$(bin/ceph tell mds.* client ls 2>/dev/null| grep mount_point | tr -d '",' | awk '{print $2}')
+    [ -n "$CEPH_FUSE_MNTS" ] && sudo umount -f $CEPH_FUSE_MNTS
+}
+
 usage="usage: $0 [all] [mon] [mds] [osd] [rgw] [--crimson]\n"
 
 stop_all=1
@@ -84,6 +114,9 @@ while [ $# -ge 1 ]; do
 done
 
 if [ $stop_all -eq 1 ]; then
+    #Umount mounted filesystems from vstart cluster
+    do_umountall
+
     if "${CEPH_BIN}"/rbd device list -c $conf_fn >/dev/null 2>&1; then
         "${CEPH_BIN}"/rbd device list -c $conf_fn | tail -n +2 |
         while read DEV; do