Dear list, For years I'd used a couple of rsync scripts for backup, usually just full snapshots.
I knew there is an option using hardlinks that behaves like the Mac Time Machine app, giving cheap incremental backups. https://blog.interlinked.org/tutorials/rsync_time_machine.html And now I fool around with it myself. Since I have map UUIDs to mount points in /etc/fstab, I can put the full paths in the backup script and simply run it without parameters to get a date-and-time-stamped directory containing a full backup. Probably you all have something much better, but for the sake of discussion, and will post my humble offering. The clever part of the code is using a symlink .../backups/current/ to provide rsync with the --link-dest argument, the tree of files available for hardlinking during next backup pass. Also, the one-file-system argument to rsync lets me backup the root directory without pulling in other mounts. The current script doesn't support copying over a network, but can be easily achieved by consulting online resources (left as an exercise to the reader.) Obviously, you will need to configure it. Note that the directories excluded from backup are created in the last step. probably someone has done it better... # rsync-time #!/bin/sh DATE=`date "+%Y.%m.%d-%H:%M:%S"` BACKUP_ROOT=/mnt/matte/backups SOURCE_DIR=/ BACKUP_DIR="$BACKUP_ROOT/back-$DATE" HARDLINK_ROOT=$BACKUP_ROOT/current HOME_=home/jill LOG=/var/log/backup.log EXCLUDE_HOME="\ --exclude $HOME_/.mozilla/firefox/n5c5mmhh.default/cache2 \ --exclude $HOME_/.cache/mozilla/firefox/n5c5mmhh.default/cache2 \ --exclude $HOME_/.opera/cache4 \ --exclude $HOME_/Desktop \ --exclude $HOME_/Downloads \ --exclude $HOME_/.cpan \ --exclude $HOME_/.cpanm \ --exclude $HOME_/.cpanplus \ --exclude $HOME_/perl5 " EXCLUDE_SYS="\ --exclude /dev \ --exclude /proc \ --exclude /sys \ --exclude /tmp \ --exclude /var/cache/apt/archives \ --exclude /var/run " CMD="rsync -avxP $EXCLUDE_HOME $EXCLUDE_SYS --link-dest=$HARDLINK_ROOT $SOURCE_DIR $BACKUP_DIR" echo $CMD $CMD rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi echo "$DATE - Starting hardlink backup to $BACKUP_ROOT" >> $LOG echo $CMD >> $LOG echo "Completed" >> $LOG rm -f $HARDLINK_ROOT ln -s $BACKUP_DIR $HARDLINK_ROOT cd $BACKUP_DIR for dir in dev proc sys tmp var/run var/cache/apt/archives ; do mkdir $dir; done cd - # end -- Joel Roth _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
