Re: Problems with RAID1 on cobalt raq3

 Duncan, thanks for responding! I was on the cobalt-developers list, but
they don't seem that interested in such problems.

 First off set_boot_dev was used to set the boot device to hda2 (I tryed
hda1, and as you pointed out, you can't move the root device easily to
hda2 later).

 I had originally planned that hda1 was /boot and hda2 was / - in the end,
to get *anything* booting, I'd to copy the /boot files into a /boot
directory on the / filesystem, and write off hda1 as a waste of disk
space.

On Sat, Aug 17, 2002 at 04:09:40PM -0700, Duncan Laurie mentioned:

1/ where did hdg come from?  Is there a 3rd party IDE controller
in the PCI slot?  (some RaQ3s had only 1 IDE connector populated..)
If it is, then you might run into problems because most likely the
ROM kernel does not have a driver for it.

 It's a third-party ATA-66 disk controller. I wanted some sort of
reliability in the box, and as you said, this raq3 has only a single IDE
channel.

2/ the ext3 filesystem might also be confusing the ROM kernel.
If you want to try one that will recognize it look here:
ftp://ftp-eng.cobalt.com/pub/users/duncan/kernel/rom/2.9.37-ext3.rom

 Oh, thanks...I was using 2.3.40, and it seemed to boot the kernel off
ext3 fine (perhaps treating it as ext2).

This will also give you better control over the boot process,
adding a "set_lparams" function to the boot menu that specifies
the parameters specific to the ROM kernel.  ("set_params' will
pass parameters to the kernel that is loaded from disk)  This
will let you set a different root device to grab a kernel from.

 Woo-hoo. Exactly what I wanted. I think.

 So, do I do 

     set_boot_dev hda1                      (/boot)
     set_params "root=/dev/md0 ro"         

 And that should do what I've been trying to do ? Or do I have to change
the paramters to the ROM kernel also ?

It also has some more built-in PCI IDE drivers, so it might
help with problem #1. (if it is a problem...)

 Well, it's not a problem just yet - though it certainly would be if hda
failed, and the next time, it had to boot from hdg. 

John