add snap before update

update-lxc-container.sh

@@ -6,6 +6,8 @@ BRed='\033[1;31m'   # Red
 BGreen='\033[1;32m' # Green
 Color_Off='\033[0m' # Text Reset
 
+TMSTMP=$(date +'%Y%m%d%H%M%S')
+
 function stop_container() {
     lxc stop ${1}
     echo -e $(date) "- ${BGreen}Container ${1} stopped${Color_Off}"
@@ -13,6 +15,8 @@ function stop_container() {
 
 echo $(date) "- Start updating LXC container..."
 for cont_name in $(lxc list type=container -c n --format csv); do
+    echo $(date) "- Make ${cont_name} container snapshot..."
+    lxc snapshot ${cont_name}
     echo $(date) "- Updating ${cont_name} container..."
     Status=$(lxc list type=container -c ns --format csv | grep ${cont_name} | cut -d',' -f 2)
     if [ "${Status}" == "STOPPED" ]; then