Some time ago I moved from using LVM to using ZFS on my home server. This meant I also had to change the backup script I used to make backups on a remote Synology Diskstation. Below is the updated script. I also updated it such that it now needs a single command line argument: the hostname of the Diskstation to backup to (because I now have two Diskstations at different locations). If you want to run this script from cron you should set up key-based SSH login (see also here and here).
#!/bin/bash # # This script makes a backup of my home dirs to a Synology DiskStation at # another location. I use ZFS for my /home, so I make a snapshot first and # backup from there. # # This script requires that the first command line argument is the # host name of the remote backup server (the Synology NAS). It also # assumes that the location of the backups is the same on each # remote backup server. # # Time-stamp: <2014-10-27 11:35:39 (L.C. Karssen)> # This script it licensed under the GNU GPLv3. set -u if [ ${#} -lt 1 ]; then echo -n "ERROR: Please specify a host name as first command" 1>&2 echo " line option" 1>&2 exit -1 fi ############################### # Some settings ############################### # Options for the remote (Synology) backup destination DESTHOST=$1 DESTUSER=root DESTPATH=/volume1/Backups/ DEST=${DESTUSER}@${DESTHOST}:${DESTPATH} # Options for the client (the data to be backed up) # ZFS options ZFS_POOL=storage ZFS_DATASET=home ZFS_SNAPSHOT=rsync_snapshot SNAPDIR="/home/.zfs/snapshot/$ZFS_SNAPSHOT" # Backup source path. Don't forget to have trailing / otherwise # rsync's --delete option won't work SRC=${SNAPDIR}/ # rsync options OPTIONS="--delete -azvhHSP --numeric-ids --stats" OPTIONS="$OPTIONS --timeout=60 --delete-excluded" OPTIONS="$OPTIONS --skip-compress=gz/jpg/mp[34]/7z/bz2/ace/avi/deb/gpg/iso/jpeg/lz/lzma/lzo/mov/ogg/png/rar/CR2/JPG/MOV" EXCLUSIONS="--exclude lost+found --exclude .thumbnails --exclude .gvfs" EXCLUSIONS="$EXCLUSIONS --exclude .cache --exclude Cache" EXCLUSIONS="$EXCLUSIONS --exclude .local/share/Trash" EXCLUSIONS="$EXCLUSIONS --exclude home/lennart/tmp/Downloads/*.iso" EXCLUSIONS="$EXCLUSIONS --exclude home/lennart/.recycle" EXCLUSIONS="$EXCLUSIONS --exclude _dev_dvb_adapter0_Philips_TDA10023_DVB*" ############################### # The real work ############################### # Create the ZFS snapshot if [ -d $SNAPDIR ]; then # If the directory exists, another backup process may be running echo "Directory $SNAPDIR already exists! Is another backup still running?" exit -1 else # Let's make snapshots zfs snapshot $ZFS_POOL/$ZFS_DATASET@$ZFS_SNAPSHOT fi # Do the actual backup rsync -e 'ssh' $OPTIONS $EXCLUSIONS $SRC $DEST # Remove the ZFS snapshot if [ -d $SNAPDIR ]; then zfs destroy $ZFS_POOL/$ZFS_DATASET@$ZFS_SNAPSHOT else echo "$SNAPDIR does not exist!" 1>&2 exit 2 fi exit 0 |