Re: Transferring disks with partimage

Karl F. Larsen wrote:
Siggy Brentrup wrote:
On Tue, Jul 14, 2009 at 17:08 +0200, Joep L. Blom wrote:
Fred Roller wrote:

DD will work over the network. Ensuring neither drive is mounted, the
command would look something like this:

dd if=/dev/sda1 |ssh user@xxxxxxxxxxxxxx "dd of=/dev/sdb1 bs=4028
conv=notrunc"

sda1 = whatever source device
sdb1 = whatever destination drive

if you want to do the whole drive then drop the numbers (sda ->sdb)

this takes awhile (5-25 Mb/s is the range I have seen).
Hope this helps. Check the archives, we just discussed this subject and
proceedures for both dd and rsync are there.

Hope this helps.

Fred & Siggy,
Thanks for the reply. I agree with Siggy that dd over the network is
dangerous moreover I don't want the same partition size on both drives.
The whole procedure is meant to store one 20 GB disk and one 80 GB disk
each on a separate partition on a 1 TB disk, well at least all the ext3
partitions. Of course the NTFS and FAT32 partitions will come on their
own partition. I was thinking along the line of using partimage-server
to move the images ( of each partition) to the destination system.
However that doesn't solve my wish to concatenate the smaller partitions.
I'm still looking for a way to do that with a minimal of effort (!).
Joep
Just curious: do you mean minimal effort for you or minimal effort
for the OS?. Apart from some early experiments I have always used
a tar or cpio pipe for bulk copying, something along the lines of

sudo tar czf - /home | ssh sudo tar xzf - -C /

You might also consider to nfs mount the remote volume and use
the known commands but be carefull with root rights on the
remote volume.

In any case let the machine work for you and have a beer and
an oude genever :)

tot ziens
Siggy


I found a dd backup scheme which is this:


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DD Backups over SSH

To perform backups of a local workstation?s hard disk over a network,
perform the following procedures (adjusted to your particular situation
of course):

1. Download and boot from a live Linux distro

This is a LiveCD and that means all the partitions on the computer are
unmounted.

2. Become ?root? within a shell
3. Run ?fdisk -l? (?mac-fdisk -l? I know works on SystemRescueCD
0.2.0 (PPC) for PPC/Macs (what about Intel Macs?)) and note the internal
hard disk partition to backup (ex: ?/dev/hda?)

The rest assumes that (in short, you will probably have to substitute
some numbers or devices and you have ssh access somewhere):

1. You have network access
2. You have access to an SSH server
3. Your network is configured with private addresses and you are not
assigning one that conflicts with another local IP address
4. Your netmask is the same as the one supplied in the following commands

Give an IP address to the workstation you have just booted the live
Linux disc on, set the netmask, and bring the network interface up:
ifconfig eth0 192.168.1.50 netmask 255.255.255.0 up

Set the default gateway (if you need to reach outside of the LAN that
is? normally this is your router?s IP address):
route add default gw 192.168.1.1

Set a DNS server (if you are in the habit of not strictly using IP
addresses):
echo "nameserver 192.168.1.1" > /etc/resolv.conf

Execute the backup command:
dd if=/dev/hda | ssh username@xxxxxxxxxxxxxxxxx "dd
of=/directory_of_backups_on_ssh_server/backupfile.iso"

Obviously, most of the previous is getting the network up? try running
?dhclient? if the live Linux disc has it installed, and your network has
DHCP setup. ;-)
This entry was posted on Friday, September 12th, 2008 at 10:04 pm. You
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I have not tried this so I cannot say it works for sure.


73 Karl



Thanks Karl,
I will look into ot tomorrow and see what I can do with the information.
Much obliged,
Joep

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