On Tue, Apr 18, 2006 at 11:15:22AM -0300, tomlobato wrote: Content-Description: Mail message body > > Hi! > > > It is possible to make partition image on the fly? With the system (*Linux > server) running? > > I think in the aproach: At midnigth (less system use), the script remounts > partition readonly by some minutes while put the output of 'dd if=/dev/...' > to a file in another HD on the same machine. Some word? Some trouble in do > so? > > * The server is running several services like internet, mail, web, jabber, > mysql. I want to make a diary backup of it. Hardware resources are not > problem, I can use another machine, or DVD writer or another HD or the three > options together. > > > If it is not possible, what do you think about mount the system from > another system in the LAN via NFS, and use simple 'cp -R /mnt/nfs-server/ > /backup/'? Obviously excluding dirs like /proc, /mnt, etc. > > > > PS: I already search google, tldp, etc and didnt find nothing with this > specifity level. > > > > Thank you > Tom > > > > Hi Tom,
have you thought about using something like rsync? It will speed up the
process of taking images tremenduously. As you are talking about a diary
backup - I'm not too sure what you mean by that - have you looked at
rsnapshot? Here is my backup script (clobbered together from the output
of rsnapshot -t daily):
#!/bin/bash
/bin/rm -rf /mnt/sda1/backup/daily.6/
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/
/bin/cp -al /mnt/sda1/backup/daily.0/ /mnt/sda1/backup/daily.1/
/usr/bin/rsync -avx --delete /home/ /mnt/sda1/backup/daily.0/home/
/usr/bin/rsync -avx --delete --exclude=/swap /
/mnt/sda1/backup/daily.0/root/
touch /mnt/sda1/backup/daily.0/
The above backs up my /home and / partitions to a USB disk and rotates
the last seven backups. Another big advantage is the reduced space
consumption as only _changed_ files get backed up, unchanged files are
just hardlinks. Would something like this be useful to you?
Hth
--
Andreas Rippl -- GPG messages preferred
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