On Fri, Aug 25, 2006 at 11:29:55AM +0200, Gilles Mocellin wrote: > Le vendredi 25 août 2006 10:50, Hagakure a écrit : > > Hi, > > > > I've got to upgrade our backup system (bash script) that currently uses > > rsync to backup two sites to a storage server. > > > > Currently rsync is used to do an incremental copy of the data and then > > we archive it using tar. Unfortunately, the archives are now taking up a > > huge amount of hdd space. > > > > What I am looking for is a pointer so that we still use rsync to copy > > the data, but rather than archive the entire backup, we have a tar file > > for each days differences. > > > > Ideally, we would be able to insert the differences (file names only!) > > into a mysql db so we can recover files quickly. > > > > I looked into various options, but wondered if anyone might have a > > pointer to enable us to do this. > > > > Thanks, > > > > Haga > > Hello, > > I use rsnapshot. It does not make tar files of difference but several > directories, all showing the full archive at a date, but with the magic of > hard links and rsync, it stores only files wich have changed. > > There's also rdiff-backup, but restores can only be done with rdiff-backup, > that's ennoying for me. > > Also, dirvich. Hi Haga,
I also used to use rsnapshot happily until I started to notice that the
rsync initiated by rsnapshot didn't fully work (basically for some
reason which I never figured out the --delete option was not alsways
honoured). I used -t option to rsnapshot to just print it's output and
put that in a shell script as seen below:
# --- 8< --------------------------------------------------------
#!/bin/bash
# delete the oldest backup
/bin/rm -rf /mnt/sda1/backup/daily.6/
#move all backups to the next older stage
mv /mnt/sda1/backup/daily.5/ /mnt/sda1/backup/daily.6/
mv /mnt/sda1/backup/daily.4/ /mnt/sda1/backup/daily.5/
mv /mnt/sda1/backup/daily.3/ /mnt/sda1/backup/daily.4/
mv /mnt/sda1/backup/daily.2/ /mnt/sda1/backup/daily.3/
mv /mnt/sda1/backup/daily.1/ /mnt/sda1/backup/daily.2/
#make a copy of the newest backup
/bin/cp -al /mnt/sda1/backup/daily.0/ /mnt/sda1/backup/daily.1/
#backup /home and log the result
/usr/bin/rsync -avx --delete /home/ /mnt/sda1/backup/daily.0/home/ > \
/root/store/rsnapshot.log 2>&1
#backup / and log the result
/usr/bin/rsync -avx --delete --exclude=/swap / \
/mnt/sda1/backup/daily.0/root/ >> /root/store/rsnapshot.log 2>&1
#touch the new backup for timestamp purposes
touch /mnt/sda1/backup/daily.0/
# --- 8< --------------------------------------------------------
I use this script to backup my /home and / to a USB disk, but you can
run it as a cronjob on the backup server to backup any computer you want.
Hth
--
Andreas Rippl -- GPG messages preferred
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