DLT8000 wrong driver

[Rafael Moran]

Hello,

I just replaces a DLT7000 by a DLT8000. I patched the system with PHKL_22855 as mentioned on other messages on the forum.
Now I cannot access to the dlt, always says I/O error or cannot read from /dev/rmt/1m
The ioscan show next result:

Class I H/W Path Driver S/W State H/W Type Description
======================================================================
tape 1 10/4/12.3.0 tape2 CLAIMED DEVICE QUANTUM DLT8000
/dev/diag/rmt/c4t3d0 /dev/rmt/c4t3d0BEST
/dev/rmt/1m /dev/rmt/c4t3d0BESTb
/dev/rmt/1mb /dev/rmt/c4t3d0BESTn
/dev/rmt/1mn /dev/rmt/c4t3d0BESTnb
/dev/rmt/1mnb
tape 0 10/12/5.0.0 stape CLAIMED DEVICE HP C1533A
/dev/rmt/0m /dev/rmt/c5t0d0BEST
/dev/rmt/0mb /dev/rmt/c5t0d0BESTb
/dev/rmt/0mn /dev/rmt/c5t0d0BESTn
/dev/rmt/0mnb /dev/rmt/c5t0d0BESTnb

I noticed that the driver is using is not correct. The system assigned the tape2 driver instead of stape as I have on other systems. I tried to remove the special files with rmsf but it says rmsf: Warning: Cannot remove tape2 at 10/4/12.3.0

Does anyone knows how to reassign the driver to the stape. This is a production system so I cannot reboot the system until midnight


Thank you

[Alexander M. Ermes]

Hi there.
Try an insf -ef to replace existing device files.
If you need more info about insf, just read the man pages.
Rgds
Alexander M. Ermes

[Rafael Moran]

Thank you alexander

The -f option is not available. I not mentioned that i'm working on 10.20 so probably this option is on 11
I tried anyway to reinstall with insf -e -H 10/4/12.3.0 and says ok but still I have the tape2 driver

[Sanjay_6]

Hi Rafael,

Try patch PHKL_24221

Here is the link,

http://us-support3.external.hp.com/wpsl/bin/doc.pl/screen=wpslDisplayPatch/sid=13709dd209490272ae?PATCH_PATH=/hp-ux_patches/s700_800/11.X/PHKL_24221&HW=s800&OS=11.00

Hope this helps.

Regds

[Rafael Moran]

Thank you Sanjay but this driver is only for 11.00
I think the equivalent for 10.20 is the one I already installed PHKL_22855

[erics_1]

Rafael,

I don't believe there is a way around this. If you have no need for the tape2 driver on this system, I suggest removing it from the kernel and upon reboot (tonight) that tape drive should bind to the stape driver. Sorry I don't have an "on the fly" answer for you.

Best Regards,
Eric

[Xavier Gutierrez]

Try to remove special files first:

# rmsf -d tape2 -H 10/4/12

Then insf them back:

# insf -d stape -e -H 10/4/12

Hope this helps...

Regards,
Xavier

[Rafael Moran]

Thank you Eric and Xavier,

Last night I removed tape2 from kernel and rebooted. After that the DLT8000 appeared as unclaimed and there was no possible to assign the stape driver to it, so I added again the driver and it was again reasigned to it.
I tried also the xavier's solution but it seems that nothing happens. No message returns and the special files are still there and assigned to the DLT.
If i cannot configure it soon i will replace it again by a dlt7000. Do you know if there is any way to replace it without rebooting ? I say that because doing it on the fly could cause the scsi bus hangs

Thank you for your answers

[ian Dennison · Accepted solution]

I had a similar problem on 11.0, where I could not get a DLT Drive working on SCSI. I found the problem was that I had plugged the Drive into a 16 bit differential SCSI Card, rather than a Fast/Wide SCSI Card.

Worth checking out? Cheers, Ian Dennison

[Rafael Moran]

Thank you Ian,

I checked your answer:

# ioscan -fnk | grep SCSI
ext_bus 0 8/8 c720 CLAIMED INTERFACE GSC add-on Fast
/Wide SCSI Interface
ext_bus 1 8/12 c720 CLAIMED INTERFACE GSC add-on Fast
/Wide SCSI Interface
ext_bus 2 10/0 c720 CLAIMED INTERFACE GSC built-in Fa
st/Wide SCSI Interface
ext_bus 3 10/4/4 scsi3 CLAIMED INTERFACE HP 28696A - Wid
e SCSI ID=5
ext_bus 4 10/4/12 scsi3 CLAIMED INTERFACE HP 28696A - Wid
e SCSI ID=7
ext_bus 5 10/12/5 c720 CLAIMED INTERFACE Built-in SCSI


ioscan -fnkCtape
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
tape 1 10/4/12.3.0 tape2 CLAIMED DEVICE QUANTUM DLT8000
/dev/diag/rmt/c4t3d0 /dev/rmt/c4t3d0BEST
/dev/rmt/1m /dev/rmt/c4t3d0BESTb
/dev/rmt/1mb /dev/rmt/c4t3d0BESTn
/dev/rmt/1mn /dev/rmt/c4t3d0BESTnb
/dev/rmt/1mnb
tape 0 10/12/5.0.0 stape CLAIMED DEVICE HP C1533A
/dev/rmt/0m /dev/rmt/c5t0d0BEST
/dev/rmt/0mb /dev/rmt/c5t0d0BESTb
/dev/rmt/0mn /dev/rmt/c5t0d0BESTn
/dev/rmt/0mnb /dev/rmt/c5t0d0BESTnb

So I think you are right. I checked DLT8000 specifications with more attention and it clears says that only works with FWD - Fast Wide Differential.

Thank you very much. Problem solved.