Re: [gentoo-amd64] Quick grub question

[Richard Freeman <rich@thefreemanclan.net>]

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Florian D. wrote:
> hello,
> the drive ordering thing is explained by Duncan already. I just want to point out that if you want
> to have your root partition on the raid too and if you are using the new superblock version(>=1),
> you should be aware of the fact, that it is not possible to auto-assemble the array during the boot
> process. Neither the normal raid-autodetect nor a kernel command line like
> raid=noautodetect root=/dev/md1 md=1,/dev/sda2,/dev/sdb2,/dev/sdc2
> will work. In this case, you have to use an initramfs to assemble your root-raid, or just use the
> old 0.90 superblocks, which is the default, I think.
> I just wanted to tell you that, because I had exactly the same issue and setting up the initramfs
> was quite a lot of work (and IMHO only poor documentation available).
> 

Thanks to both of you.  I'll, experiment with that the next time I have
some downtime.  I have version 00.90.03 superblocks at the moment so it
sounds like I should be OK.

I noticed the new grub-2 is supposed to take care of a lot of this mess,
or at least it looks like it.  It would be a lot nicer to just say "root
(md1)" and be done with it!

Hopefully by the time the new superblocks become standard somebody will
update the various HOWTOs to explain how to set up the initrd to make it
work...
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