101 lines
2.4 KiB
Bash
101 lines
2.4 KiB
Bash
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#!/bin/bash
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# Script to restore a virtual machine disk with Borg (plan B)
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#
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# Copyright (C) 2023 Adrien 'neox' Bourmault <neox@a-lec.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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# Exit on error
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set -e
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# Enable quitting properly
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trap clean_exit INT
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function clean_exit() {
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echo "Exiting..."
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set +e
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umount -q /mnt/${vm}
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umount -q /mnt/${vm}-remote
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sync
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if [ ! -z ${loopdisk} ]; then
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losetup -d ${loopdisk}
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fi
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sleep 3
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rmdir /mnt/${vm}*
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exit 0
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}
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vm=$1
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dest=$2
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backuphost=$3
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rsync_options=$4
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generic_image="/srv/vmverse/installation/generic.a-lec.org.raw"
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if [[ $# < 3 ]]
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then
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echo "ERROR: 3 parameters required : vm domain, destination path, backup host"
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exit 1
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fi
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# Checking saves
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echo -e "Checking backups...\n"
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export BORG_PASSPHRASE=$(ssh root@${backuphost} cat /srv/borg/.borg-passphrase)
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DATES=$(borg list --short root@${backuphost}:/var/backups/borg/${vm}.repo)
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IFS=$'\n' DATES=(${DATES})
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echo "* BACKUPS AVAILABLE *"
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echo "---------------------"
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echo " "
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i=0
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while [ $i -lt ${#DATES[@]} ]
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do
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echo -e "\t${i}) ${DATES[i]}"
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i=$((i+1))
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done
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# Asking for save to restore
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read -p "Please choose a backup to restore: " backupdate
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echo -e "\nOK\n"
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# Preparing path
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echo "Preparing path..."
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mkdir -p /mnt/${vm}
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mkdir -p /mnt/${vm}-remote
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mkdir -p $(dirname ${dest})
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# Creating new disk if necessary
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if [ ! -e ${dest} ]; then
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echo "Creating new disk..."
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cp --reflink ${generic_image} ${dest}
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fi
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# Mounting
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echo "Mounting devices..."
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loopdisk=$(losetup -fPL ${dest} --show)
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mount ${loopdisk}p1 /mnt/${vm}
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borg mount root@${backuphost}:/var/backups/borg/${vm}.repo::${DATES[backupdate]} /mnt/${vm}-remote
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# Syncing
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echo "Syncing now !"
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sleep 1
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rsync -ar --info=progress2 --progress --no-i-r --sparse ${rsync_options} /mnt/${vm}-remote/. /mnt/${vm}
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# Cleaning up
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echo -e "\nOK\n"
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clean_exit
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