diff options
Diffstat (limited to 'etc/nextcloudpi-config.d/nc-snapshot-sync.sh')
-rw-r--r-- | etc/nextcloudpi-config.d/nc-snapshot-sync.sh | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/etc/nextcloudpi-config.d/nc-snapshot-sync.sh b/etc/nextcloudpi-config.d/nc-snapshot-sync.sh new file mode 100644 index 00000000..9f992f6a --- /dev/null +++ b/etc/nextcloudpi-config.d/nc-snapshot-sync.sh @@ -0,0 +1,84 @@ +#!/bin/bash + +# Sync Nextcloud BTRFS snapshots +# +# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com> +# GPL licensed (see end of file) * Use at your own risk! +# +# Usage: +# +# ./installer.sh nc-snapshot-sync.sh <IP> (<img>) +# +# See installer.sh instructions for details +# +# More at https://ownyourbits.com/2017/02/13/nextcloud-ready-raspberry-pi-image/ +# + +ACTIVE_=no +SNAPDIR_=/media/USBdrive/ncp-snapshots +DESTINATION_=/media/myBackupDrive/ncp-snapshots +COMPRESSION_=no +SYNCDAYS_=1 +DESCRIPTION="Sync BTRFS snapshots to USBdrive or remote machine" + +INFO="Use format user@ip:/path/to/snapshots for remote sync +'user' needs permissions for the 'btrfs' command at 'ip' +'user' needs SSH autologin from the NCP 'root' user at 'ip' +Only use compression for internet transfer, because it uses many resources" + +install() +{ + apt-get update + apt-get install -y --no-install-recommends pv + wget https://raw.githubusercontent.com/nachoparker/btrfs-sync/master/btrfs-sync -O /usr/local/bin/btrfs-sync + chmod +x /usr/local/bin/btrfs-sync + ssh-keygen -N "" -f /root/.ssh/id_rsa +} + +configure() +{ + [[ $ACTIVE_ != "yes" ]] && { + rm /etc/cron.d/ncp-snapsync-auto + service cron restart + echo "snapshot sync disabled" + return 0 + } + + # checks + [[ -d "$SNAPDIR_" ]] || { echo "$SNAPDIR_ does not exist"; return 1; } + + [[ "$DESTINATION_" =~ : ]] && { + local NET="$( sed 's|:.*||' <<<"$DESTINATION_" )" + local DST="$( sed 's|.*:||' <<<"$DESTINATION_" )" + local SSH=( ssh -o "BatchMode=yes" "$NET" ) + ${SSH[@]} : || { echo "SSH non-interactive not properly configured"; return 1; } + } || DST="$DESTINATION_" + [[ "$( ${SSH[@]} stat -fc%T "$DST" )" != "btrfs" ]] && { + echo "$DESTINATION_ is not in a BTRFS filesystem" + return 1 + } + + [[ "$COMPRESSION_" == "yes" ]] && ZIP="-z" + + echo "30 4 */${SYNCDAYS_} * * root /usr/local/bin/btrfs-sync -qd $ZIP \"$SNAPDIR_\" \"$DESTINATION_\"" > /etc/cron.d/ncp-snapsync-auto + service cron restart + echo "snapshot sync enabled" +} + +# License +# +# This script is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This script is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this script; if not, write to the +# Free Software Foundation, Inc., 59 Temple Place, Suite 330, +# Boston, MA 02111-1307 USA + |