Re: [gentoo-user] Re: initramfs & RAID at boot time

On Sun, Apr 18, 2010 at 11:16, Neil Bothwick <neil@××××××××××.uk> wrote:
> On Sun, 18 Apr 2010 09:57:38 +0300, Ciprian Dorin, Craciun wrote:
>
>>     Also a question for about /boot on RAID1... I didn't manage to
>> make it work... Could you Neil please tell me exactly how you did
>> this? I'm most interested in how you've convinced Grub to work...
>
> You just don't tell GRUB that it's working with one half of a RAID1
> array. Unlike all other RAID level, with 1 you can also access the
> individual disks.
>
> --
> Neil Bothwick


    Well I've tried exactly that: I've aggregated two partitions in
RAID1, made the file system, then tried to install Grub on them (as in
run grub-setup or grub-install or grub and then from the shell the
setup)... And I didn't succeeded. I've tried the following:
    * try to install Grub on the MD as it would have been a partition
-- failed (as expected as the MD device is not on a hard-drive);
    * stopped the MD, and then tried to install grub on each partition
individually -- it worked to install, but from a reason I don't
remember right now it failed to boot;

    So what intrigues me is how you've initialized the MBR, how you've
runned grub-setup?

    (In the end I am more pleased with two boot partitions, as if I
miss-configure one, I'll have the other one to boot from. I've also
cross-referenced the grub menu to chain-load the other disk.)

    Thanks,
    Ciprian.