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