Bug 54721

Summary:	Grub and software RAID-0,1,5 fail to read partition type 0xfd
Product:	Gentoo Linux	Reporter:	Richard Scott <gentoo.bugs>
Component:	[OLD] Core system	Assignee:	Gentoo Linux bug wranglers <bug-wranglers>
Status:	RESOLVED TEST-REQUEST
Severity:	normal
Priority:	High
Version:	2004.1
Hardware:	x86
OS:	All
Whiteboard:
Package list:		Runtime testing required:	---

Description Richard Scott 2004-06-22 03:40:40 UTC

I have been able to setup a RAID-0 array with a single disk with no problems. However, adding more than one disk into the array causes grub to generate this error when trying to setup grub:

Filesystem type unknown, partition type 0xfd

I have tested the following options:

RAID-0, 1 drives: OK
RAID-0, 2 or more drives: FAIL
RAID-1, 2 or more drives: FAIL
RAID-5, 3 or more drives: FAIL

and to install grub I use the following:

grub --no-floppy

grub> device (hd0) /dev/hda
grub> root (hd0,0)
grub> setup (hd0)
grub> quit

This all used to work ok with LiveCD v2004.0. From looking at the grub ebuild the current grub-0.94-r1 ebuild seems to be lacking the debian raid patch.

is this still required for supporting the 0xfd autodetect raid filesystems?

Comment 1 Richard Scott 2004-06-22 05:09:34 UTC

I've just found that support for RAID-1 has been added to grub-0.95, so were part way there. Any idea on how to get it working for RAID-5?

Comment 2 Richard Scott 2004-06-22 07:11:49 UTC

ok, found a work round for this (I think). I'm setting my /boot partition to be a RAID-1 and the rest to be RAID-5. In theory that should make sure the boot information is on all disks and that RAID-5 will still work.

will test it out.