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Re: Raid 5



On 06/03/13 04:49 PM, Tom H wrote:
On Wed, Mar 6, 2013 at 1:59 PM, Gary Dale<garydale@rogers.com>  wrote:
Sorry but this isn't difficult (although it may affect top-posters more than
bottom posters :) ). The Debian installer allows you to create a whole-disk
RAID array then partition it. You have a single RAID 5 array with some
number of primary partitions (up to 4 - I use 2, / and /home, with swap
files rather than swap partitions but traditionalists may prefer a swap
partition). Grub treats the array like a disk drive and has no problem
booting from it.

One issue you may have with Squeeze (I recommend Wheezy instead) is that the
UUID for / in grub.cfg may be wrong. Simply replace it with the correct one
(probably for /dev/md0p1) and everything will work. You will have to repeat
this anytime update-grub is run. This is not an issue with Wheezy.
We must be using very different d-is!

I've never seen an option to create a partitioned mdraid array for
either squeeze or wheezy.

Furthermore, grub2 in squeeze cannot recognize partitioned mdraid
arrays; squeeze has grub2 version 1.98+20100804-14+squeeze1 and
partitioned mdraid support was introduced in version 1.99-1.

You need the advanced install I believe. I have a Squeeze system booting into RAID 5 but, as I said, Wheezy is better. The Squeeze system has a problem with the UUIDs needing to be fixed after update-grub is run.


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