changing to raid controller btldinstall btld
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From: "D. Thomas Podnar" <email@example.com> 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" driver. 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 controller. 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 seen first.
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 adapter 1. 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 all. 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 btmnt -w cp /stand/unix /stand/unix.adaptec btmnt -r
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 with dpti5 c) Relink and reboot. Otherwise, use the "btldinstall" command to install the driver from your floppy. Use the btld instructions from our web site. ftp://ftp.microlite.com/demos/docs/howto_btld* 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 in case... 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. Tom --- D. Thomas Podnar - President firstname.lastname@example.org 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.| |http://www.microlite.com ftp://ftp.microlite.com| +----------------------------------------------------------+ 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. Harold Knopke
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