Ferdinand Schinagl wrote:
>Hi wizards,
>
>is it somehow possible to save a complete disk structure via a net
>booted system. I guess I have at least to do the(re-)partitioning by
>hand. I especially think about some windows based clients which I want
>to quickly repair in case of "emergency". Therefore, I'd like to install
>the system, all the apps and stuff and generate an image of the harddisk
>partitions or even the whole disk(s).
>
>Is there anything like this possible with linux at the moment? I know
>that there are also (commercial) solutions available (one product is
>called "ghost" or something like that, I do not remember the name
>anymore).
I have chosen to use /dev/hda2 in these examples; change this to the
appropriate device. If you save a disk or partition like this, you have
to restore onto a disk or partition of exactly the same size.
If you are wanting to save an entire partition or disk across a network,
a possible method is this, or some variation on it:
dd if=/dev/hda2 bs=32k | rsh remotehost 'dd bs=32k of=/path/to/save_file'
I chose a 32k blocksize to suit disk access, but perhaps you would get
better performance from a blocksize chosen to suit your network package
size.
rsh is a security problem, but I think you can do something similar with
ssh
Another way is to NFS-mount remotehost's partition and do:
dd if=/dev/hda2 bs=32k of=/nfs/mounted/partition/save_file
Whichever way you do it, you want to make sure that the partition on
/dev/hda2 is not mounted while you are dumping its physical device, or
you could save it in a corrupt state. Similarly, do not restore onto a
mounted partition.
--
Vote against SPAM: http://www.politik-digital.de/spam/
========================================
Oliver Elphick [EMAIL PROTECTED]
Isle of Wight http://www.lfix.co.uk/oliver
PGP key from public servers; key ID 32B8FAA1
========================================
"For the word of God is quick, and powerful, and
sharper than any twoedged sword, piercing even to the
dividing asunder of soul and spirit, and of the joints
and marrow, and is a discerner of the thoughts and
intents of the heart." Hebrews 4:12
