Comment 9 for bug 44609

Revision history for this message
Saivann Carignan (oxmosys) wrote :

Colin Watson and Tormod Volden :

This can be enabled in karmic since we now have grub2 which support direct raid boot.
Making it possible to install ubuntu on raid requires very little changes now :

1. Install mdadm by default into the livecd environment. (676 Kb)
2. Patch ubiquity to run these commands in the /target chroot AFTER raid has been partitioned and ubuntu has been installed to make / accessible from initramfs by updating mdadm.conf :
chroot /target /usr/share/mdadm/mkconf > /etc/mdadm/mdadm.conf
chroot /target update-initramfs -u

With these two small changes, it's possible for a user that knows how to partition and raid from command line to install ubuntu on his raid device from ubiquity, using manual partitioning. I tried it and it work perfectly. And it's the first step to make raid accessible from LiveCD. And since grub2, it's not necessary for partman to make sure that /boot is installed on a different partition.

Left to implement later :
Ubiquity to manage and offer RAID during installation (looks like Palimpsest is already starting to offer functionalities related to raid, which are limited at the moment).