Guus Houtzager wrote:
On Wed, 2005-12-21 at 22:53 +1100, Vincent Ho wrote:
On Wed, Dec 21, 2005 at 11:29:33AM +0100, Guus Houtzager wrote:
A colleague of mine wrote just that script. I had the problem of needing
to migrate my backuppc with all data to another server and ran into the
whole hardlink / memory issue. So my colleague wrote a script that
rsyncs the /pc data machine for machine and then after each machine
reconstructs the cpool. It takes a while on large installs, but works
like a charm, used it 3 times so far. I'll check if I can send it to
you.
I'm interested in this as well - offsite backup of backuppc is probably
the trickiest part about using it, and we've wrestled with the memory
problem here. We ended up just dd/rsync'ing the raw partition to an
external drive.
Actually, if your script isn't large, perhaps you could send it to the
list. When you say it takes a while, how long are we talking, and how
much backup data do you have?
The setup consists of 2 short scripts: one in perl (adapted from several
standard backuppc files) and a wrapper shell script. I intend to send it
to the list if I'm allowed, sorry if that wasn't clear.
It took something like 3 days (maybe a little more, can't remember
exactly) to complete for about 400 GB of backuppc data (compressed &
pooled). Uncompressed it would be about 2 TB, something like almost 700
full backups and 350 incrementals total, divided over 75 machines
configured in backuppc, all in all something like 4 million files. Or
something close to this. Most of the spent time is in reconstructing the
cpool, rsync is quick. The machine on which the reconstructing took
place is a Pentium 4 3 GHz, 1 GB ram and 4 300 GB disks in software raid
10, which is pretty quick.
Vince
Regards,
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