On Wed, 2005-05-04 at 13:32 +0800, Ow Mun Heng wrote: > On Tue, 2005-05-03 at 15:29 +0200, YoYo Siska wrote: > > when we did some backups of partitions from one computer to another > > (and > > then clone the partition to few other computers), we did it rougly in > > this way: > > > > first make the free space easily compressible, for example zero-ing > > it > > ( dd if=/dev/zero of=some_file_on_the_partition > > till it stops on 'disk full', then rm some_file_..., but there may be > > better ways) > > > > then on the second computer (were we wanted the backup): > > nc -l -p 7777 -q 0 | gunzip | pv >backupfile > > > > and on the first computer > > cat /dev/hda1 | pv | gzip | nc othermachine 7777 > > Wow.. That's a cool way to do things. > > The other way to do it, without having the need to use nc (netcat) would > be to use ssh instead. I do it either > > 1. tar -cf / . | ssh [EMAIL PROTECTED] "tar -xvf - -C /"
Whoops.. should be tar -cf - / | ssh -c blowfish [EMAIL PROTECTED] "tar -xvf - -C /" > 2. rsync -av / [EMAIL PROTECTED]:/ > > #1 would be preferred over #2 since it uses tar and it streams > everything block by block rather than file by file like rsync. > > Note also that one can also choose to use the blowfish cipher instead of > the default RSA/DSA(??) via "ssh -c blowfish" > > Rsync would be good if I needed to do backups only. > > Can someone help me with this, how can I use dd over the network? > > eg: something like > <pseudo code> > dd if=/dev/hda | ssh [EMAIL PROTECTED] "of=/ " > > something like that... is it possible? > > -- Ow Mun Heng Gentoo/Linux on DELL D600 1.4Ghz 98% Microsoft(tm) Free!! Neuromancer 13:33:34 up 1 day, 3:03, 3 users, load average: 1.33, 0.86, 0.68 -- gentoo-user@gentoo.org mailing list
