Michael D. Bartberger
mdb at chem.ucla.edu
Mon Dec 4 09:48:17 EST 2000
Just recently, I needed to do this about a dozen times.
If you're using Red Hat, then this becomes pretty easy.
You can use 'dd' and specify the device names for the two drives;
e.g. /dev/sda and /dev/sdb for two SCSI drives in a machine.
Alternatively (and I was pleasantly surprised to find this),
GNU 'cp' recognizes /dev devices as such. I cloned a few drives
(including partition information, boot sector, etc.) with
cp /dev/sda /dev/sdb
which made perfect clones. I'm told this works just fine for
/dev/hda etc. IDE variants. I cloned 36 GB 10K RPM
SCSI drives in about 11 minutes each, using one drive as
the source and just sticking drive after drive into the
box, a little further down the SCSI cable. Worked perfectly.
Check www.deja.com/usenet for more discussion about cloning
drives under Linux (in fact, this is where I learned about
GNU 'cp' correctly copying devices like this).
On Mon, 4 Dec 2000, Rich Grenyer wrote:
> Has anyone had any experience with cloning hard drives for cluster
> installations? Our cluster needs fully functional disk-based nodes
> unfortunately, and I don't feel like running through the RedHat
> installation procedure that many times - any suggestions, or am I
> just being lazy?
> Rich Grenyer
> Mammalian Evolution and Conservation
> Biology Department
> Imperial College at Silwood Park
> SL5 7PY
> Telephone: +00 44 (0)20 7594 2328
> Fax: +00 44 (0)20 7594 2339
> email: r.grenyer at ic.ac.uk
> Beowulf mailing list
> Beowulf at beowulf.org
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