Re: Restore tape image to slightly different hardware

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• In reply to: Perry Whelan: "Restore tape image to slightly different hardware"
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Date: Fri, 22 Aug 2003 21:15:13 GMT

Perry Whelan wrote:
>
> Hello,
> I've got a few Compaq ML-350's (G3's), some of them have RAID LC 2
> controllers and some have HP Smart Array 641 controllers. Here's the
> situation:
>
> I've got tape images of my ML-350's with the Compaq RAID LC2 controllers.
> I've goten to the point where I can sucesfully unarchive the tapes to the
> hard disks of the HP Smart Array 641 controlled boxes, but, obviously, when
> I reboot it panics.

How did you get the image onto the Smart Arra 641 disks? If you say
"I used an emergency boot floppy from one of the 350's that is running
on the 641 controller" then the following may have a chance:

Boot the Emergency boot floppy with the 641 drivers in the kernel.
Mount /dev/hd0root on /mnt. mount the Emergency boot floppy on /mnt/mnt.
Mount /dev/boot on /mnt/stand. zcat /mnt/mnt/unix.Z (doing this from
memory, you list /mnt/mnt and choose the compressed
kernel) > /mnt/stand/unix.641. Check to see if the /mnt/dev/* files are
from the backup image of the 641 image you are restoring.

I suggest that you undo (or overwrite your changes listed below with a
fresh restore from the backup tape) then at the boot: prompt type
unix.641 to boot the kernel copied from the Emergency boot floppy.

At this point you may be able to get to maintenance mode and perform the
boot load install for the 641 as specified by "adding 641 drivers to a
running system." Change /etc/conf/cf.d/mscsi to change the root disk
controller from the RAID LC2 controller to the 641, relink, and reboot.

There is a TA with specific instructions for changing the root disk
controller. Check it out. Normally, I would perform the btldinstall
on the RAID LC2 system and add a disk on the 641 controller (not
necessarily installed in the machine) and rebuild the kernel BEFORE
making the tape image to be moved to the new system.

>
> So, I've tried the following:
> (this is after I 'cpio -ivcdumB < /dev/rct0' but before I reboot)
>
> cd /mnt/etc/conf/sdevice.d
> cat clad | sed s/Y/N/g > clad.new ; mv clad clad.old ; mv clad.new clad
> cat ciss | sed s/N/Y/g > ciss.new ; mv ciss ciss.old ; mv ciss.new ciss
> cd /mnt/etc/conf/cf.d
> cat mscsi | sed s/clad/ciss/g > mscsi.new ; mv mscsi mscsi.old ; mv
> mscsi.new mscsi
>
> This was to no avail, any suggestions?
>
> - Perry

-- 
                                      Steve Fabac
                                       S.M. Fabac & Associates
                                        816/765-1670

• Previous message: Joe Nall: "Re: route dropped when WAN goes down"
• In reply to: Perry Whelan: "Restore tape image to slightly different hardware"
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