I was experimenting with swapping drives to simulate what would happen
when a drive failed. I swapped a few to many times, methinks, and used the
same set of three drives without removing the older mirrored information.
At some point something got confused and lilo would not write to
both drives simultaneously (either /dev/hdb or /dev/hda) making them
unbootable with a message that no bootable partitions were
found.
After fdisk-ing the drive and marking the partitions bootable they
become bootable.
Installing a clean (new) drive into the machine and resyncing results in
the same situation and I have to physically fdisk and tage the new drive
as bootable.
I have been unable to find a solution short of backing up and recreating
the whole raid1 array.
My 5c worth...
Regards
John
On Tue, 4 Jul 2000, Thomas Scheuermann wrote:
> Am Die, 04 Jul 2000 schrieben Sie:
> > By mistake I installed my raid1 system to use hdc3 as disk 0 and hda3 as
> > disk 1. Now I'm planning to change the disks to another machine that
> > cannot boot from any other device than hda which means that the current
> > installation would not work since I'm booting with lilo and the
> > /-partition is also on the raid system.
> >
> > The question is how do I change the disk 0 to be disk 1 and vice versa
> > without losing data? (I would like to do this even if the above condition
> > would not force me to do it.)
> >
> If you have mirrored the whole system it's no problem to swap the two
> disks. If LILO is installed for raid it doesn't care about it. I have tested it
> with a system completely mirrored on hda and hdc. I was able to swap the
> devices without any difference at booting. It all worked fine.
>
> > (I'm using RH 6.2 standard installation with raid1 built in to kernel)
>
> I used RH 6.1
> >
> > C,
> >
> > Jaakko Tiistola / First Hop Ltd
> Thomas
> --
> Thomas Scheuermann Software Design Engineer
> BARCO Control Rooms Dr. Seufert GmbH
>
> [EMAIL PROTECTED]
>
