ROOT raid (software raid 1)

[Jon Masters]

On Sun, 05 Dec 2004 16:48:14 -0600, Rich Duzenbury
<rduz-ubuntu at theduz.com> wrote:

> I'm in need of some directions.  I want to run ubuntu for my desktop,
> but the installer doesn't support root or boot on raid.

It claims not to. It actually does work.

Create a separate /boot partition for the kernel and initrd to live in
and then install to a / filesystem living on a RAID1 or RAID0 device
that you create during the install. My ubuntu server in the office
currently has 4 active disks doing RAID0+1 and running LVM on top with
another disk about to go in in case 2 happen to fail in quick
succession :-)

> It seems that there must be a way to convert to raid after the fact, as
> I've seen for some other distros.

It's also possible to convert after the fact using generic
instructions and rebuilding the initrd to cope with the fact that it
will need to run mdadm for you.

Cheers,

Jon.

P.S. This is a major sticking point for ubuntu and Debian acceptance
on mission critical kit which should be addressed. It's not too tricky
to boot and initrd off a separate boot partition.