changing to raid controller btldinstall btld
From: "D. Thomas Podnar" <firstname.lastname@example.org>
Subject: Re: converting from blad to dpti5 RAID controller
Date: Sun, 31 Dec 2000 22:40:47 GMT
System: OpenServer 5.0.5
Motherboard: Asus with built-in Adaptec controller using "blad"
Disk Drives: 2 IBM 8 GB SCSI 68-pin drives.
Tape Drive: 50-pin HP SCSI DAT
The system works fine but since one of the drives is not used, the
customer wants a RAID1 system set up using a DPT PM2654U2 SCSI RAID
I made a master backup and recovery diskettes using Microlite's
BackupEdge. Before doing this, I upgraded their copy with the latest
version from the Microlite's web site.
Good start. Make sure you have two backups, too.
Next, I changed the SCSI ID of the onboard controller from 7 to 6
since I didn't want it to interfere with the DPT controller which also
uses 7. I rebooted the system to make sure that this wouldn't impact
the function of the onboard controller. It didn't. I also disabled
the setting in the BIOS which would make force the Adaptec BIOS to be
Misunderstanding. Both adapters can have the same SCSI ID, since they
are separate BUSES. We need to make the DPT adapter 0 and the Adaptec
Then I installed the DPT controller, switching the disk drive cable
from the Adaptec controller to the the DPT controller but leaving the
tape drive connected to the onboard controller since I didn't have a
50-pin to 68-pin converter with me.
I then configured the DPT controller for RAID 1 (mirroring) and
watched -- pleasently surprised -- as the controller saw the first
drive as O.K. and proceeded to rebuild the second drive to match the
first. This was fine as the customer had not used the second drive at
Next, I booted the system and watched to make sure that the DPT
controller was seen first making its BIOS the dominant on. At the
boot prompt, I entered:
defbootstr link=fd(60)dpti5 Sdsk=dpti5(0,0,0,0) Stp=blad(0,0,3,0)
I was asked for the btld diskette and everything seemed O.K.
The system continued with the boot procedure but in the section where
it lists the hardware which it recognized, it did not recognize the
DPT controller. The message was: WARNING: SCSI boot option(s)
ignored; Unknown host adapter driver. It then halts ungraciously with
the "Press Any Key to Reboot" message.
The error indicates that there is no driver labeled "dpti5" on the
BTLD floppy. I'm going under the assumption here that that is the right
name and that you made the BTLD diskette properly.
Let's try the following procedure.
1) Get the system to recognize the DPT as primary.
2) Link the kernel to do that.
3) Add the Adaptec as the second host adapter.
First, make a copy of the Adaptec version of /stand/unix
cp /stand/unix /stand/unix.adaptec
Attach the drive(s) to the DPT as you did before.
>From the hard drive, try this boot string...
defbootstr link=dpti5 Sdsk=dpti5(0,0,0,0) disable=blad
Insert the BTLD diskette when prompted.
If this works, go into single user mode. If dpti5 currently exists
on the hard drive...
a) edit /etc/conf/sdevice.d/dpti5 and turn the driver on.
b) edit /etc/conf/cf.d/mscsi and replace all instances of blad
c) Relink and reboot.
Otherwise, use the "btldinstall" command to install the driver
from your floppy. Use the btld instructions from our web site.
If that works, you'll be booted from the hard drive under the dpti5
driver. You can use mkdev to "install" the blad as the second
adapter and turn your tape drive back on. You can disable
the BIOS on the Adaptec at this point.
None of what you are trying to this point involves the BackupEDGE
tape or RecoverEDGE diskettes. They're just nice to have around
If this DOESN'T work, try using BTLDinstall to pre-install the
DPTI driver and make it the primary and the Adaptec the secondary.
Then do the hardware change.
I'd leave the Adaptec on ID7.
D. Thomas Podnar - President email@example.com
Microlite Corporation 724-375-6711 Voice
2315 Mill Street 724-375-6908 Fax
Aliquippa PA 15001-2228 888-257-3343 Toll Free Sales
| The Crash Recovery Company(sm) |
|Makers of |
| BackupEDGE - Data Archiving Software For Unix & Linux |
| RecoverEDGE - Network-Enabled Smart Disaster Recovery |
| for Linux, UnixWare 7.1, OpenServer 5.0.x.|
I also tried booting from the BackupEdge diskettes using the same
defbootstr but without the "fd(60)". Again it seemed to go through
all the motions but came up with the same error message.
I then tried numerous combinations such as disabling the Adaptec
controller altogether but nothing worked. I removed the DPT
controller, put everything back and was again pleasantly surprised
that the system booted and everything worked. I had expected that the
DPT controller's RAID creation would have destroyed the data.
The customer is up and running again but he still doesn't have a RAID
system. I know that I am not supposed to ask for ideas or suggestions
as per instructions in other posts :-) but I am asking for help even
if it is in the form of suggestions as to things to try.
Happy New Year everyone.
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