topic Re: problem installing tape drives .. in Operating System - HP-UX

problem installing tape drives ..

someone_4 — Tue, 15 Oct 2002 15:09:30 GMT

Hello everyone

I am trying to intall my tape drives and I have an issue with only my 2nd install ..

I plug up the hardware and then run insf -e

on the first server it worked fine . i see the device

Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 0 0/0/1/0.1.0 stape CLAIMED DEVICE HP C1537A
/dev/rmt/0m /dev/rmt/c0t1d0BESTn
/dev/rmt/0mb /dev/rmt/c0t1d0BESTnb
/dev/rmt/0mn /dev/rmt/c0t1d0DDS
/dev/rmt/0mnb /dev/rmt/c0t1d0DDSb
/dev/rmt/c0t1d0BEST /dev/rmt/c0t1d0DDSn
/dev/rmt/c0t1d0BESTb /dev/rmt/c0t1d0DDSnb

now the one i am having problems with is the 2nd one..
i did the same thing as above but it gives me

Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 1 0/0/1/0.0.0 stape CLAIMED DEVICE HP C1537A
/dev/rmt/1m /dev/rmt/c0t0d0BESTn
/dev/rmt/1mb /dev/rmt/c0t0d0BESTnb
/dev/rmt/1mn /dev/rmt/c0t0d0DDS
/dev/rmt/1mnb /dev/rmt/c0t0d0DDSb
/dev/rmt/c0t0d0BEST /dev/rmt/c0t0d0DDSn
/dev/rmt/c0t0d0BESTb /dev/rmt/c0t0d0DDSnb
tape 0 0/0/1/0.1.0 stape NO_HW DEVICE HP C1537A
/dev/rmt/0m /dev/rmt/c0t1d0BESTn
/dev/rmt/0mb /dev/rmt/c0t1d0BESTnb
/dev/rmt/0mn /dev/rmt/c0t1d0DDS
/dev/rmt/0mnb /dev/rmt/c0t1d0DDSb
/dev/rmt/c0t1d0BEST /dev/rmt/c0t1d0DDSn
/dev/rmt/c0t1d0BESTb /dev/rmt/c0t1d0DDSnb

is there a reasn why i am getting a differnt path .. and on the 2nd one hardware not found??

~ Richard

Re: problem installing tape drives ..

Sandip Ghosh — Tue, 15 Oct 2002 15:25:20 GMT

Scsi PATH depends on your SCSI ID. I think in the Second Server when you added first time the SCSI ID was 1 and Second time when you added the SCSI ID is 0. When you added first time it had created the device file with the address 0/0/1/0.1.0 but the second time when you added it created the device file with the hardware add 0/0/1/0.0.0 . Change the SCSI ID to 1. It should solve the prob. Remember to do it in power off condition.

Sandip

Re: problem installing tape drives ..

Ashwani Kashyap — Tue, 15 Oct 2002 15:26:52 GMT

Is there any scsi id conflict on the second machine ?

Re: problem installing tape drives ..

Brian M Rawlings — Tue, 15 Oct 2002 15:28:10 GMT

Richard, maybe some more info would help us:

What are these tapes going into, or connecting up to? On the second one, are there two tapes, or just one? On the second (failing) tape, what is the SCSI ID?

If there is just one tape drive in the second case, then something is confused about SCSI ID. This can happen due to termination (which can be one the drive, or an external terminator, depending on where it's going).

You might try swapping the two tape drives, to prove that one is not just bad.

Please respond, and we'll get you fixed up.

Regards, --bmr

Re: problem installing tape drives ..

S.K. Chan — Tue, 15 Oct 2002 15:31:35 GMT

In addition it's good to clean out "unused" device files with rmsf before you install the drive. That way there would not be any conflict. I would be more specific ..
# insf -H
instead of using "insf -e".

Re: problem installing tape drives ..

John Dvorchak — Tue, 15 Oct 2002 15:34:58 GMT

It looks to me like the drive was functioning enough to pass the ioscan. But looking at the output above, it is not working. I would look at the SCSI termination. If that and the cabling looks good then perhaps the tape drive is really broken. Can you swap it out with the other tape to confirm that it is bad?

Re: problem installing tape drives ..

someone_4 — Tue, 15 Oct 2002 19:24:08 GMT

I will switch tape drives and and maybe even try this tape drive on another server. I will keep you guys updated and award points once we got it going ..

~ Richard

Re: problem installing tape drives ..

Sridhar Bhaskarla — Tue, 15 Oct 2002 20:36:33 GMT

Richard,

For me, it looks like someone changed the scsi id of the tape drive. The path is not changed but the instance due to the fact that the instance was already assigned for the previous scsi id.

You can get rid of the device files using rmsf. But only a reboot will clean up the NO_HW entry in the kernel tables.

You can reset the instance number and get your familiar "0m" device by using ioinit command. Look at ioinit man page.

-Sri

Re: problem installing tape drives ..

Michael Tully — Tue, 15 Oct 2002 21:32:47 GMT

Hi Richard,

I had this problem as well, but I solved with the information in this link.

HTH

Michael

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xb5968cc5e03fd6118fff0090279cd0f9,00.html

Re: problem installing tape drives ..

Kim Kendall — Wed, 16 Oct 2002 14:55:02 GMT

Make sure the driver is loaded...

# Sam
-> Kernel Configuration
-> Drivers
-> [make sure the "stape" is "in" ]
to highlight it
-> Actions/Add Driver
-> Actions/Process New Kernel