problems with fbackup and dat72 drive

[jthrumston]

I recently installed a dat72 tape drive for one of my HPUX 11.X boxes. did the insf -e, did the ioscan and got all of the expected results. The tape drive shows as claimed. It carries the proper permissions etc. I can tar and dd to it so I know it is at least on the OS lvl recongized. When I attempt to run an Fbackup via sam I get the following error.
"output file /dev/rmt/2m is not a valid device file for backup"
I placed a call to HP support and so far this has stumped even the techs there. I downloaded LTT per their request and everything there seems to be in order in refernece to the firmware etc.
Has anyone else seen something like this and remember what they did to fix it? I have never seen anything like this before.
Below is output of couple commands, maybe you can see something I don't. Tape 2 is the one with problems.

# ioscan -fnC tape
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
tape 0 0/10/0/0.1.0 stape CLAIMED DEVICE HP C5683A
/dev/rmt/0m /dev/rmt/c4t1d0BESTn
/dev/rmt/0mb /dev/rmt/c4t1d0BESTnb
/dev/rmt/0mn /dev/rmt/c4t1d0DDS
/dev/rmt/0mnb /dev/rmt/c4t1d0DDSb
/dev/rmt/c4t1d0BEST /dev/rmt/c4t1d0DDSn
/dev/rmt/c4t1d0BESTb /dev/rmt/c4t1d0DDSnb
tape 2 0/10/0/1.3.0 stape CLAIMED DEVICE HP C7438A
/dev/rmt/2m /dev/rmt/c5t3d0BEST
/dev/rmt/2mb /dev/rmt/c5t3d0BESTb
/dev/rmt/2mn /dev/rmt/c5t3d0BESTn
/dev/rmt/2mnb /dev/rmt/c5t3d0BESTnb


From LTT
The following is identity information for the selected device. You can use
commands to select functionality to perform on this device.

Product ID : C7438A
Drive Technology : DAT 72
Mech. Serial Number : HU1054454L
Firmware Rev : ZP5A/HP
Target ID : 3
Target LUN : 0
OBDR Capability : Present
WORM Capability : Not Present

Cartridge Information (for cartridge currently in drive):
Cartridge Type : DAT 72
* Capacity : 36GB/72GB
Write Protected : No

* Capacity varies by compression ratio and is system and data dependent.
Numbers represent capacity with no compression and with 2:1 compression


# ls -l /dev/rmt/2m
crw-rw-rw- 2 bin bin 205 0x053000 Feb 20 15:08 /dev/rmt/2m


# mt -f /dev/rmt/2m status
Drive: HP C7438A
Format:
Status: [41014700] BOT online immediate-report-mode
File: 0
Block: 0

[Steve Steel]

Hi


What is your patch level for scsi and fbackup especially SCSI Tape (stape) cumulative


Steve Steel

[A. Clay Stephenson]

I'll assume this is HP-UX 11.11; in that case, install PHKL-33425. Believe it or not it has a fix specifically for DAT72's under fbackup.

[Etienne Roseau]

Hi
did you try to re-install devices for your tape drive ??
maybe a dead link (once i had to re-create a link for a tape drive, even if i could seen it properly...)
and, as the others said, check patches..
HTH
E.

[jthrumston]

I am going to do the Patch, it looks to be the solution for now. If not, I will come back to the thread. Thanks for the information and help.

[jthrumston]

Thanks again for the help!

[Supen Kumar Khan]

Hi,
try the fabckup from command line.

[Supen Kumar Khan]

Hi
Try to use /dev/rmt/0m