DLT TZ88 output file /dev/rmt/c1t4d0BESTn encountered an I/O error

[Denis Sirois]

Hi,

I'm trying to install DLT tape backup to my K class system HP9000/869/K420. I do a ioscan -fun and see my tape backup, it's using tape2 drive, but when I try usinf fbackup to do my backup I get an erro "output file /dev/rmt/c1t4d0BESTn encountered an I/O error". Is someone using this unit and if so how is it configure.

I'm using HP-UX 11.0.

Thanks for any help.

[Vic Parker]

Hi MJ,

I wonder a couple of things and here are a couple of things to try. Are you getting any tape activity during this period before the error shows? Try the command:

dd if=/dev/rmt/c1t4d0BESTn of=/dev/null

is there tape activity? Does this basic command yield an error? If so the problem is either with the tape drivers, or the tape hardware itself. The dd command is very basic and low level, should work with no problems. If there are issues with dd, again hardware or driver config is your problem.

HTH,

vic

[Denis Sirois]

Hi Vic,

I did the command and got this input:

root [/stand]dd if=/dev/rmt/c1t4d0BESTn of=/dev/null
/dev/rmt/c1t4d0BESTn: I/O error
dd: cannot open /dev/rmt/c1t4d0BESTn

the problem is with the driver and I need to user the passthru driver spt instead of the tape2.
How do I do that in HP-UX 11.00.

Thanks

[Vic Parker]

Hey MJ,

Problem isolated, excellent. There is a man page that will walk you thru the creation of the SCSI Pass Thru driver. The man page is very good so I will not try to paraphrase that information, on the risk of mis-quoting or leaving out a step. Reference the man page for scsi_pt. The page is located in section 7, it gives a good description of the driver and as you page down you will notice a complete section on Installation and Configuration.

Cheers,

Vic