Update docker_volume_backup.sh

docker_volume_backup.sh

@@ -18,7 +18,7 @@ echo "[BEGIN] Backup docker volume" >> $LOG_FILE
 volumes=( `docker volume ls | awk '{print $2}' | tail -n +2` )
 
 for x in "${volumes[@]}"; do
-  cmd="docker run --rm -it -v $x:/src -v $SAVE_DIR:/backup alpine tar -jpcf /backup/$x_$DATE.tar.bz2 /src"
+  cmd="docker run --rm -it -v $x:/src -v $SAVE_DIR:/backup alpine tar -jpcf --ignore-failed-read /backup/$x_$DATE.tar.bz2 /src"
   echo $cmd >> $LOG_FILE
   eval $cmd
 done