[rhn-users] Cloning machines

[Sterling, James A]

I have done this using dd .. on none raid systems.. 
 
If both disks are the same size this will work.
 
The local changes will need to be done afterward include the name of the
system and the IP address if you are running fixed IP :-\ if you are
running DHCP then you should not need to worry about that.
 
I go into single user mode with the target/slave disk just connected but
not used by the OS on either the sata or ide bus
 
The command that I have used is 
 
nice -19 dd if=/dev/hdc of=/dev/hdd bs=8192k &<ret>

 

You may need to change the /dev/hdc to match which device your drives
show up as .. 

The nice sets the priority to a very high level so the process runs
faster.

 

The dd command uses as an input the /dev/hdc; the output is /dev/hdd and
the block size is set to 8192k
 
By putting the process into the background you can check the progress by
doing a ps -ef.. 
 
I have seen a complete duplication on a 150 Gig drive being done in 1
hour 40 minutes.. your speed will vary depending on the CPU clock speed
etc.. 
 
Hope this helps
 
Jim

	James A. Sterling III 
	<Beware of programmers who carry screwdrivers> 
	Integrated Labs                     
	610-591-6450 Voice 
	610-591-3456 Fax 
	610-319-1518 Pager 

   pager email 6103191518 at arch.net 

 

________________________________

From: Jerry Roy [mailto:jerry.roy at us.army.mil] 
Sent: Monday, April 16, 2007 11:15 AM
To: rhn-users at redhat.com
Subject: [rhn-users] Cloning machines


I've got several Dell 2950s with RHEL4AS. Our client wants us to clone
the OS from one machine onto all the others such that all systems are
"identical" from an OS perspective.  Can someone give me a general
outline of steps to take that will result in multiple identical machines
while avoiding some of the "gotchas" like overwriting the /etc/fstab
file. Etc?  Obviously, I found that one first hand.  In advance, thank
you.
Jerry 
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