LILO + Raid1 + Root filesystem

[Aurélien Gâteau]

Hello!

We are in the process of adding software Raid1 support to our FAI process. 
Right now we successfully partitionned and formatted the hard disks, then 
installed software on them, but we can't make the system boot. Our lilo.conf 
uses boot=/dev/md0 and root=/dev/md0. If we use the option:
 raid-extra-boot="/dev/hda3,/dev/hdb3"

Lilo fails to install. If we use:
 raid-extra-boot="/dev/hda,/dev/hdb"

Lilo installs successfully, but on reboot fsck complains that there's 
something wrong with the superblock and mount the root system read-only.

I saw on the mailing list archives that some of us have successfully added 
Raid1 support to your FAI setup, how did you make the system boot?

Regards,
  Aurélien