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Bug 54721 - Grub and software RAID-0,1,5 fail to read partition type 0xfd
Summary: Grub and software RAID-0,1,5 fail to read partition type 0xfd
Status: RESOLVED TEST-REQUEST
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: x86 All
: High normal (vote)
Assignee: Gentoo Linux bug wranglers
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Reported: 2004-06-22 03:40 UTC by Richard Scott
Modified: 2004-06-22 07:11 UTC (History)
0 users

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Runtime testing required: ---


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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.