On Wed, May 07, 2008 at 11:11:12PM +0200, Sam Przyswa wrote:

> > > We have to change our BackupPC server to a new machine, how to copy the
> > > entire BackupPC directory (120Gb) to an other machine ?
> > > 
> > > I tried rsync, it crash after a long, long time, I tried scp but it
> > > don't pass the link and the dest directory become out of size after
> > > transferring about 50% of files...
> > > 
> > > What is the right way to transfert a BackupPC with 120Gb of files ?
> > 
> > An often suggested method is using dd and growing the filesystem 
> > afterwards. This will probably be a lot faster as dd doesn't need to 
> > know anything about the file structure and things like hardlinks.
> 
> Yes but the the machines are on Internet not on your office, we have to
> do that over the net. I never do a dd over ssh !?

It would work like this:

oldserver# dd if=/dev/backuppc-filesystem bs=1M | ssh -c blowfish -C -o 
CompressionLevel=9 newserver "dd of=/de/newfilesystem bs=1M"

(Of course, the filesystem has to be unmounted.) Later, you resize the
file system to it's desired size, e.g. resize2fs /dev/newfilesystem
Depending on the network connection between your servers, you might want
to skip the compression (-C and -o).

HTH,

Tino.

-- 
"What we resist, persists." (Zen saying)

www.craniosacralzentrum.de
www.forteego.de

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