1 files changed, 76 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..fb8c9153
--- /dev/null
+++ b/etc/nextcloudpi-config.d/nc-snapshot-sync.sh
@@ -0,0 +1,76 @@
+#!/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
+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()
+{
+  wget https://raw.githubusercontent.com/nachoparker/btrfs-sync/master/btrfs-sync -O /usr/local/bin/btrfs-sync
+  chmod +x /usr/local/bin/btrfs-sync
+}
+
+configure()
+{
+  [[ $ACTIVE_ != "yes" ]] && { 
+    rm /etc/cron.daily/btrfs-sync
+    echo "snapshot sync disabled"
+    return 0
+  }
+
+  # checks
+  [[ -d "$SNAPDIR_" ]] || { echo "$SNAPDIR_ does not exist"; return 1; }
+
+  [[ "$( stat -fc%T "$DESTINATION_" )" != "btrfs" ]] && {
+    echo "$DESTINATION_ is not in a BTRFS filesystem"
+    return 1
+  }
+
+  [[ "$COMPRESSION_" == "yes" ]] && ZIP="-z"
+
+  cat > /etc/cron.daily/ncp-btrfs-sync <<EOF
+#!/bin/bash
+/usr/local/bin/btrfs-sync -qd $ZIP $SNAPDIR_ $DESTINATION_
+EOF
+  chmod +x /etc/cron.daily/ncp-btrfs-sync
+  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
+