Installing Ubuntu server on software raid

[Mark Kirkwood]

I recently installed Ubuntu 8.10 x86 server. I ran into some problems 
(started a thread on ubuntu-users that probably should have been sent 
here, but only just discovered this list yesterday). The short version 
of the two problems and associated workarounds is:

https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/311637
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/83231

For the first one I used the 'rescue broken system' on the install cd 
and then removed the dmraid package, for the second I added 
'/sbin/udevadm settle --timeout=10' to 
/usr/share/initramfs-tools/scripts/init-premount/udev and rebuilt the ramfs.

With those out of the way we booted fine. The next thing I wanted to 
redo my install, configuring the md arrays with a chunk size of 256K - 
and discovered that there was no way I could see to do this in the 
installer. I worked around this by booting a live cd from another linux 
distro and setting up the arrays manually using mdadm (I think I could 
have done this using the install cd's 'rescue broken system' mode, but 
the live cd was a nicer environment).

So to the point of the message - have I missed an option on the install 
cd : can you configure raid chunksize? (it only seemed to want to know 
how many disks were to be in the array).

Best wishes

Mark