I would suspect lilo is not writing boot info to both disks.
Try "/sbin/lilo -v -v -v <other options> " to see what lilo is actually
writing to which disk. This may shed some light on the problem.
I upgraded lilo to the RH6.2 version (lilo-21.15). The RPM includes
the raid-1 patch. It works for me (RH6.0) booting from /dev/md0.
It can boot OK from either disk in the array - with the other
unplugged.
Also add "default=Linux" (or whatever label you have given to the
default image set-up) to lilo.conf. Even lilo-21.15 doesn't
fully duplicate all information on both disks in the array and
on one disk it needs some help to find the image to boot.
(Thanks to Dave Meythaler [[EMAIL PROTECTED]]
for this tip)
There is also a possible issue with the order of /dev/hda5 and
/dev/hdb5 in the array. See the "Lilo RAID-1 woes" thread in
the archive http://kernelnotes.org/lnxlists/linux-raid/
between May 8th & 10th this year.
Regards
Martin Munt
Draugen Project, SubSea Offshore Limited
Rockwater Building, Stoneywood Park, Dyce, Aberdeen, AB21 7DZ
Tel: +44 1224 795433 Fax: +44 1224 795582
mailto:[EMAIL PROTECTED]
> -----Original Message-----
> From: John Saunders [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, May 23, 2000 11:54 AM
> To: Thomas Scheuermann
> Cc: [EMAIL PROTECTED]
> Subject: Re: Recovery problems with raid1
>
> Hi
>
> I have a similar problem.....
>
> /dev/md1 consists of /dev/hda5 and /dev/hdb5
>
> When running LILO only /dev/hdb is updated.
>
> Should /dev/hdb fail, I cannot boot from /dev/hda and get a message that
> no valid boot disk was found.
>
> I have tried installing a new /dev/hda, fdisk'd and raidhotadd'd the
> drive.
>
> After array resonstruction I ran LILO again with the same result.
>
> Anyone have any ideas ?.
>
> Regards
>
> John
>
> On Tue, 23 May 2000, Thomas Scheuermann wrote:
>
> > Hello,
> >
> > I have some recovery problems with RAID1.
> > (raidtools 0.90)
> > I use Red Hat Linux 6.1 and I have two partitions mirrored (hda8 and
> hdc8).
> > If I loose the second part of the mirror I don't have any problems.
> > I can recreate the RAID1 with raidhotadd /dev/md0 /dev/hdc8.
> > But if I loose the first mirror Red Hat Linux fails to boot because
> > of an invalid RAID configuration.
> > Does anybody know that problem and has maybe a solution ?
> >
> > Thanks
> > Thomas
> >
> > --
> > Thomas Scheuermann Software Design Engineer
> > BARCO Control Rooms Dr. Seufert GmbH
> >
> > [EMAIL PROTECTED]
> >
