[DRBD-user] drbd - fdisk - limitations

Mark Watts m.watts at eris.qinetiq.com
Mon Aug 2 12:53:26 CEST 2010


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On 02/08/10 11:43, Ralf W. wrote:
> Hello Group - Question:  We want to create a drbd device greater than 4TB on top 
> of a hardware raid10 mass storage device.  What are the limitations of fdisk and 
> the second question, do I have to create a partition table or can I just use the 
> "raw" entire disk (/dev/sda) device.  What are your recommendations?
> Sincerely,
> Ralf Wiegand
> 

If all you will ever want to do is use the entire space on the block
device for DRBD, then just use /dev/sdX as the backing device in drbd.conf.

If you want to carve the block device up into more than one DRBD volume,
or use part of it for something else, you are probably better off using
LVM on the raw disk (pvcreate /dev/foo), and using that as the DRBD
backing store.

Mark.

- -- 
Mark Watts BSc RHCE MBCS
Senior Systems Engineer, IPR Secure Managed Hosting
www.QinetiQ.com
QinetiQ - Delivering customer-focused solutions
GPG Key: http://www.linux-corner.info/mwatts.gpg
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