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105 lines
2.9 KiB
Bash
105 lines
2.9 KiB
Bash
#!/bin/bash
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# Sync Nextcloud BTRFS snapshots
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#
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# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
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# GPL licensed (see end of file) * Use at your own risk!
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#
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# More at https://ownyourbits.com/2017/02/13/nextcloud-ready-raspberry-pi-image/
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#
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tmpl_get_destination() {
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(
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. /usr/local/etc/library.sh
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find_app_param nc-snapshot-sync DESTINATION
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)
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}
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tmpl_is_destination_local() {
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(
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. /usr/local/etc/library.sh
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is_active_app nc-snapshot-sync || exit 1
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! [[ "$(find_app_param nc-snapshot-sync DESTINATION)" =~ .*"@".*":".* ]]
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)
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}
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is_active() {
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[[ $ACTIVE == "yes" ]]
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}
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install()
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{
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apt-get update
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apt-get install -y --no-install-recommends pv openssh-client
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wget https://raw.githubusercontent.com/nachoparker/btrfs-sync/master/btrfs-sync -O /usr/local/bin/btrfs-sync
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chmod +x /usr/local/bin/btrfs-sync
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}
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configure()
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{
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[[ $ACTIVE != "yes" ]] && {
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rm -f /etc/cron.d/ncp-snapsync-auto
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service cron restart
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echo "snapshot sync disabled"
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return 0
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}
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# checks
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[[ "$SYNCHOUR" =~ ^([0-1]?[0-9]|2[0-4])$ ]] || {
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echo "ERROR: 'BACKUPHOUR' must be a number between 0 and 24, was: '$SYNCHOUR'"
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return 1
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}
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[[ "$SYNCDAYS" =~ ^[0-9]+$ ]] || {
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echo "ERROR: 'BACKUPDAYS' must be a number, was: '$SYNCDAYS'"
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return 1
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}
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[[ -d "$SNAPDIR" ]] || { echo "$SNAPDIR does not exist"; return 1; }
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if ! [[ -f /root/.ssh/id_rsa ]]; then ssh-keygen -N "" -f /root/.ssh/id_rsa; fi
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[[ "$DESTINATION" =~ : ]] && {
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local NET="$( sed 's|:.*||' <<<"$DESTINATION" )"
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local DST="$( sed 's|.*:||' <<<"$DESTINATION" )"
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local SSH=( ssh -o "BatchMode=yes" "$NET" )
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${SSH[@]} : || { echo "SSH non-interactive not properly configured"; return 1; }
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} || DST="$DESTINATION"
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[[ "$( ${SSH[@]} stat -fc%T "$DST" )" != "btrfs" ]] && {
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echo "$DESTINATION is not in a BTRFS filesystem"
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return 1
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}
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[[ "$COMPRESSION" == "yes" ]] && ZIP="-z"
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echo "30 ${SYNCHOUR} */${SYNCDAYS} * * root /usr/local/bin/btrfs-sync -qd $ZIP \"$SNAPDIR\" \"$DESTINATION\"" > /etc/cron.d/ncp-snapsync-auto
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chmod 644 /etc/cron.d/ncp-snapsync-auto
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service cron restart
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(
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. "${BINDIR}/SYSTEM/metrics.sh"
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reload_metrics_config
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)
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echo "snapshot sync enabled"
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}
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# License
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#
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# This script is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This script 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this script; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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# Boston, MA 02111-1307 USA
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