[...] > > I was planning to do something similar: > backing up my laptop with `backup2l' and synchronizing the related files. > > Yes, please send your shell script. @ML: I turned of automatic line break for this mail. Please don't complain about lines longer than 80 characters. Thanks.
Thanks for inspiration to: http://www.heinlein-support.de/web/projekte/rsync-backup/ Hi Jerome, on server-side (desktop) I'm running a rsync-server (see rsync(1), rsyncd.conf(5)) On client-side (notebook) every hour I run the rsync-backup script. It is configured with 5 environment variables (see below). If more than $RSYNC_TIME seconds have passed after last backup, it checks whether rsync-server is reachable. If it is, it calls the rsync_func() bash function to do the actual backup. On server-side, the rsync-rotate script is called hourly by cron. If no rsync-process is running and the creation time of the lockfile of $ROTATE_DIR is younger than $ROTATE_DIR.0 it locks the rsync-port using iptables (if you don't know how iptables works, drop me a line and I'll give you a _short_ introduction - I don't have very much spare time now :-( ). After that it deletes the oldest backup and rotates all others (8->9, 7->8, and so on). After that, it makes a backup of $ROTATE_DIR using hard links. So unchanged files don't use any hard disk space, except inodes for the hard links. Finally it copies "$ROTATE_DIR" to "$ROTATE_DIR"- (if an important file should get corrupted - remember: if a file did not change for the last 10 rsync-rotate runs, or so (see $NUM_BACKUPS), there is exactly one copy of the file on the hdd!) BTW, sorry for my bad english. Tobias /usr/local/sbin/rsync-backup: (client = notebook) ----- 8X ------------------------------------------------------------------------------------ #!/bin/bash #DNS-name/IP-address of rsync-server RSYNC_SRV="server" #rsync-share to backup to RSYNC_SERVICE="system" #lockfile, also as indicator when last backup was successful RSYNC_LOCK="/var/local/rsync-backup.lock" #logfile RSYNC_LOG="/var/local/rsync-backup.log" #minium time (seconds) which have to pass for anoter backup RSYNC_TIME=$((60*60*24*1)) rsync_func () { echo "Backing up $1" >>$RSYNC_LOG nice -19 rsync -ax --numeric-ids --delete $2 $1 rsync://"$RSYNC_SRV"/"$RSYNC_SERVICE" >> $RSYNC_LOG 2>&1 if ! [ $? = 24 -o $? = 0 ] ; then rm "$RSYNC_LOCK"; echo "Error at $1. EXIT!" >>$RSYNC_LOG; fi } ps -e |grep -v grep |grep -v $$ |grep `basename $0` >/dev/null 2>&1 && exit 0 echo >>$RSYNC_LOG date +"%s = %c" >>$RSYNC_LOG [ -f "$RSYNC_LOCK" ] && [ $(( `date +%s` - `date -r "$RSYNC_LOCK" +%s` )) -lt $RSYNC_TIME ] && { echo "No backup. End of program!" $RSYNC_LOG ; exit 0 ; } rsync rsync://$RSYNC_SRV >/dev/null 2>&1 || { echo "RSYNC-Server not available. End of program!" >>$RSYNC_LOG ; exit 0 ; } rm -f "$RSYNC_LOCK" #create lockfile, creation time shows last backup touch "$RSYNC_LOCK" #do actual backup rsync_func /home rsync_func /usr rsync_func / "--exclude /home --exclude /usr" echo "End of program!">>$RSYNC_LOG ----- 8X ------------------------------------------------------------------------------------ /usr/local/sbin/rsync-rotate: (server = desktop) ----- 8X ------------------------------------------------------------------------------------ #!/bin/bash #iptables-chain used to block rsync port IPTBL_CHAIN="rsync" #name or # of port rsync runs on RSYNC_PORT="rsync" #iptables executable IPTABLES="/sbin/iptables" #rotate which directory. must be the directory rsync shares on the network ROTATE_DIR="/pub/backup/system" #lockfile LOCKFILE="var/local/rsync-backup.lock" #number of copies stored NUM_BACKUPS=9 for i in `pidof -x $0`; do [ x$i != x$$ ] && exit done [ `date -r "$ROTATE_DIR"/"$LOCKFILE" +%s` -gt `date -r "$ROTATE_DIR".0/"$LOCKFILE" +%s` ] || exit 0 [ -d "$ROTATE_DIR" ] || exit 0 [ -x "$IPTABLES" ] || exit 0 [ $NUM_BACKUPS -lt 1 ] && NUM_BACKUPS=1 [ $NUM_BACKUPS -gt 10 ] && NUM_BACKUPS=10 $IPTABLES -L "$IPTBL_CHAIN" >/dev/null 2>&1 || $IPTABLES -N "$IPTBL_CHAIN" $IPTABLES -L INPUT |grep "$IPTBL_CHAIN.*$RSYNC_PORT" >/dev/null 2>&1 || $IPTABLES -I INPUT -p tcp --dport "$RSYNC_PORT" -j "$IPTBL_CHAIN" $IPTABLES -L OUTPUT |grep "$IPTBL_CHAIN.*$RSYNC_PORT" >/dev/null 2>&1 || $IPTABLES -I OUTPUT -p tcp --sport "$RSYNC_PORT" -j "$IPTBL_CHAIN" netstat -t |grep ":$RSYNC_PORT.*ESTABLISHED" >/dev/null 2>&1 && exit 0 $IPTABLES -A "$IPTBL_CHAIN" -j REJECT if [ -d "$ROTATE_DIR".$NUM_BACKUPS ] ; then NUM_BACKUPS=$(($NUM_BACKUPS - 1)) rm -rf "$ROTATE_DIR".$NUM_BACKUPS fi for OLD in 8 7 6 5 4 3 2 1 0 ; do if [ -d "$ROTATE_DIR".$OLD ] ; then NEW=$[ $OLD + 1 ] [ -d "$ROTATE_DIR".$NEW ] && rm -rf "$ROTATE_DIR".$NEW mv "$ROTATE_DIR".$OLD "$ROTATE_DIR".$NEW fi done if [ -d "$ROTATE_DIR" ] ; then cp -al "$ROTATE_DIR" "$ROTATE_DIR".0 [ -d "$ROTATE_DIR"~ ] && rm -r "$ROTATE_DIR"~ cp -a "$ROTATE_DIR" "$ROTATE_DIR"~ fi $IPTABLES -F "$IPTBL_CHAIN" ----- 8X ------------------------------------------------------------------------------------ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
