begin Friday 09 January 2004 15:10, Donald Teed quote:
I just found a link to this wonderful looking package last night
when reading a old thread on slashdot about "Ghost 4 Unix".
First of all, a big thanks for this effort. The world needs
this solution in open source form, and you've done it!
Up to now, I've been using something like g4u, except based
on KNOPPIX, to do the imaging over dd, ftp, wget, and gzip.
It works well for small numbers of machines, but I'd like the
solve the problem for imaging perhaps 30 to 40 at once.
I'm just at the initial stage of investigating udpcast, and
reading over the web site for any instructions I may have missed...
So far I have these initial questions.
1. Is there a howto for disk cloning written already?
It's all on the website.
How to use the udpcast boot disks: http://udpcast.linux.lu/#useboot
How to make the disks: http://udpcast.linux.lu/#makeboot
2. I don't see any reference to the steps required
for creating the disk
image file of the template machine, or is this not how it is done?
That is, I have a template machine ready to clone, what are the
steps to make an image file of the hard disk, that upd-sender can use?
Should I continue to use my equivalent to g4u to upload a gzipped
disk dump (dd) file by FTP?
This URL describes how to make the boot disks:
If you want to make an udpcast tranfer to/from a file, use the
command-line version of the machine were you want to store the
file/read the file from:
For instance, to get one machines image to a file, do the following:
[A] On the machine itself: boot up the udpcast floppy or CD, just like
you would for a normal transfer. Chose sender
[B] On the machine were you want to store the image file: launch
"udp-receiver -f image-file"
For restoring such an image to a a bunch of receivers, just do the
[A] On the machine where the image is, start "udp-sender -f image-file"
[B] On the machines where the image should be restored to, boot up the
floppy or cd, and chose receiver.
3. Will the linux kernel enable DMA on the hard drive?
I found DMA
Yes, it does.
(via hdparm) made a big performance difference in
based solution, but then some kernels seem to automatically
enable DMA anyway.
I know. Some versions of Knoppix (or maybe even 3.3?) left DMA
As far as I know, the reason for this is that certain CD-Rom drives
cannot handle DMA from/to CD. Certain Suse CDs also left DMA from/to
CD off during installation.