Re: [gentoo-amd64] SATA mdraid woes

[Antoine Martin <antoine@nagafix.co.uk>]

On Thu, 2006-12-28 at 18:06 +0000, Peter Humphrey wrote:
> A few weeks ago I had a hardware problem, and the upshot is that I now have
> a new motherboard, a SuperMicro H8DCE. I now can't boot my Gentoo system.
I had a similar problem resulting from a similar upgrade.
It was because of the order of the drives, which was different in the
BIOS (as seen by grub) and the Linux kernel.
mdadm should not care and it should be able to re-assemble the array no
matter what the partitions are named (sdc|d instead of sda|b in my case)
Some of the arrays were out of sync (I had mounted one of the raid-1
partitions separately for making a backup, etc) - booting using knoppix
(or using a simple recovery ramdisk) allowed me to re-assemble them.
Reboot, done.
It can be useful to keep a ~200MB partition to install something small
like Slackware/Busybox for emergencies, this would allow you to boot on
a single drive and see what the kernel and mdadm tools make of your
array.
Hope this helps!

Antoine

-- 
gentoo-amd64@gentoo.org mailing list