Alexander Schäferdiek
ad137e68b3
All checks were successful
continuous-integration/drone Build is passing
76 lines
1.7 KiB
Bash
Executable file
76 lines
1.7 KiB
Bash
Executable file
#!/bin/bash
|
|
# https://github.com/spherex-dev/docker-backup-volume
|
|
# creates a docker volume from a backup
|
|
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
-v|-volume|--volume)
|
|
volume="$2"
|
|
;;
|
|
-p|-prefix|--prefix)
|
|
prefix="$2"
|
|
;;
|
|
-n|-volume-name|--volume-name)
|
|
volume_name="$2"
|
|
;;
|
|
-s|-snapshot|--snapshot)
|
|
snapshot="$2"
|
|
;;
|
|
-h|-help|--help)
|
|
printf "--volume the backup name of the volume\n"
|
|
printf "--volume-name (optional) create the backup as this volume name\n"
|
|
printf "--prefix the storage prefix of the backup location"
|
|
exit 1
|
|
;;
|
|
*)
|
|
printf "***************************\n"
|
|
printf "* Error: Invalid argument.*\n"
|
|
printf "***************************\n"
|
|
exit 1
|
|
esac
|
|
shift
|
|
shift
|
|
done
|
|
|
|
if [ -z "$volume_name" ]; then
|
|
volume_name=$volume
|
|
fi
|
|
|
|
volume_exists=$(docker volume ls | grep -q $volume_name)
|
|
if [ $volume_exists ]; then
|
|
printf "***********************************\n"
|
|
printf "Error: volume $volume_name exists. \n"
|
|
printf "Please delete before proceeding \n"
|
|
printf "***********************************\n"
|
|
exit 1
|
|
fi
|
|
|
|
if [ -z "$snapshot" ]; then
|
|
snapshot=$(ls -At ${prefix}/${volume}/ | tail -n 1)
|
|
fi
|
|
|
|
if [ -z "$snapshot" ]; then
|
|
printf "**********************************\n"
|
|
printf "* Error: Unable to find snapshot.*\n"
|
|
printf "**********************************\n"
|
|
exit 1
|
|
else
|
|
echo "creating from snapshot: ${snapshot}"
|
|
fi
|
|
|
|
uuid=$(cat /proc/sys/kernel/random/uuid)
|
|
cwd=$(pwd)
|
|
|
|
IMAGE=alpine:latest
|
|
docker run \
|
|
--mount "type=volume,src=${volume_name},dst=/data" \
|
|
--name $uuid \
|
|
$IMAGE
|
|
|
|
mkdir /tmp/$uuid
|
|
tar -xf $prefix/$volume/$snapshot -C /tmp/$uuid
|
|
cd /tmp/$uuid
|
|
|
|
docker cp -a . $uuid:/data
|
|
docker rm $uuid
|
|
cd $cwd
|