Ubuntu 08.04 on a FakeRaid

Well, while rearanging my boxes last night I came upon this situation:

Installing Windows and Ubuntu Hardy on a system with a FakeRaid in Mirror- Mode.

Actually, it's pretty easy, so I thought I'd share some small comments about what needs to be done:

- Configure your RAID (1) on your BIOS level.
- Installer won't work out of the box, boot the live CD.
- Install the dmraid package and sync with dmraid -ay, after this the raid drives should become available.
- Start the installer from within the live CD environment and install as you like.
- After installing continue in LiveCD mode and open a shell.
- Mount your partitions, proc, dev, sysfs and whatever else you need.
- chroot into the mounted system.
- Install dmraid within the chroot.
- Check your grub settings.
- Unmount everything and reboot into the new system.

I've got this working with Windows and Ubuntu on the same RAID currently... the first verify of the mirror after a day didn't show anything broken.

Be careful to check and resync your mirror in case there is something wrong.

I wonder if it really works this easy, as I usually only use real RAID- Controllers.

Remember to always reference the RAID- Drives and not the actual SDX- or HDX- drives!
(e.g. use those in /dev/mapper/via_XXXXXXXX or whatever they are called).