5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
17 # This tool is meant to stop processes running in a given directory.
18 # Evacuate its contents to a temp location.
19 # Mount a given LVM to the Directory
20 # Start those services again
22 #arg1: Directory to evacuate
23 #arg2: Volume dev path to mount
25 exec >> /tmp/vol_mgmt_logfile
30 echo "Improper number of arguments passed!!"
37 echo "Trying to mount $mount_vol_dev on $evac_dir"
39 # Run partprobe to load new volumes
42 if [ ! -d $evac_dir ];then
43 echo "Provided directory $evac_dir does not exist, so lets create it."
47 if [ ! -b $mount_vol_dev ];then
48 echo "Provided volume $mount_vol_dev is not a block device!!"
52 # check if given directory is already mounted from needed volume
53 df -k $evac_dir | grep $mount_vol_dev > /dev/null 2>&1
55 echo "$evac_dir is already mounted from $mount_vol_dev"
59 running_process_list=`lsof | grep ${evac_dir} | awk -F " " {'print $2'}| uniq`
60 systemd_service_list=`systemctl --state=active --type=socket,service | grep "loaded active" | awk -F " " {'print $1'}`
62 declare -a matching_systemd_services
63 for process in ${running_process_list}; do
64 for systemd_service in ${systemd_service_list}; do
65 systemd_MainPID=`systemctl show -p MainPID ${systemd_service} | awk -F "MainPID=" {'print $2'}`
66 if [[ $process == $systemd_MainPID ]];then
67 matching_systemd_services+=(${systemd_service})
73 # Stop running services which were using old dir
74 echo "Stopping services ${matching_systemd_services[@]}"
75 for service_name in ${matching_systemd_services[@]}; do
76 systemctl stop $service_name > /dev/null 2>&1
78 service_base_name=`echo $service_name | awk -F ".service" {'print $1'}`
79 service $service_base_name stop > /dev/null 2>&1
84 while [[ $service_wait_count != 0 && $systemd_status == 0 ]]; do
85 echo "waiting for $service_name to stop"
87 ((service_wait_count--))
88 systemctl status $service_name > /dev/null 2>&1
92 if [[ $service_wait_count == 0 ]];then
93 echo "$service_name did not stop gracefully. Stopping it forcefully."
94 systemctl -f stop $service_name > /dev/null 2>&1
98 # Move old dir contents to tmp location
99 tmp_dir="/tmp/`basename ${evac_dir}`"
101 cp -rpf ${evac_dir}/* $tmp_dir
104 # Mount the volume on dir
107 cp -rpf $tmp_dir/* ${evac_dir}/
110 # Start the services again
111 echo "Starting services ${matching_systemd_services[@]}"
112 for service_name in ${matching_systemd_services[@]}; do
113 systemctl start $service_name > /dev/null 2>&1