[ale] Grub and auxiliary boot partition

[Greg Freemyer]

Jeff,

I use a 2-disk 3ware controller specifically for my server boot drives.

Seems like a 2-disk controller is about $100 and it prevents you
worrying about grub issues.

Greg

On Thu, Apr 30, 2009 at 11:21 AM, Jeff Hubbs <jeffrey.hubbs at gmail.com> wrote:
> I have a server with two disks that I use for booting and rooting - sda and
> sdb.  I partition them like this:
>
> |--sda1=/boot-----|--sda2 (type fd)------------------------|
>
> |--sdb1=/auxboot--|--sdb2 (type fd)------------------------|
>
> sdb1 and sdb2 are made into md0 in kernel RAID 1 and md0 is mounted as /.
> sda1 and sdb1 have the bootable flag set.  /auxboot holds the same files as
> /boot.
>
> I want to have things such that if sda is dead, grub can be told to boot
> entirely using just sdb.
>
> When I install grub, I envision these commands:
>
> grub> root (hd0,0)
>
> grub> setup (hd0)
> grub> root (hd1,0)
> grub> setup (hd1)
>
>
> Does that look like it will do what I want, acknowledging that the settings
> in grub.conf in /boot
> would come up and therefore would have to be changed by hand in the grub
> start menu before actually
>
> booting?
>
> If so, I expect I could do away with the human intervention by putting sda
> and sdb in the BIOS'
> boot list in that order, changing the grub.conf in /auxboot to use sdb2 as
> /, and then running the
>
> grub commands above.
>
> What do you think?
>
> - Jeff
>
>
>
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>
>



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Greg Freemyer
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