topic Re: about adding tape ! in Operating System - Tru64 Unix

about adding tape !

leyearn — Wed, 15 Oct 2003 20:21:35 GMT

my system is alpha 4000
the os is digital unix v4.0
i want to add a new tape !
what should i do to make tape work ?
thanks!

Re: about adding tape !

Ralf Puchner — Thu, 16 Oct 2003 01:22:39 GMT

# /dev/MAKEDEV tz(bus # x 8 + ID #)

e.g.

# /dev/MAKEDEV tz10

see also "man MAKEDEV" or have a look into the system administration guide.

Re: about adding tape !

leyearn — Thu, 16 Oct 2003 05:41:58 GMT

how can i find the bus and target number of the tape?
when i execute #scu show edt
there is no entry of tape!

Re: about adding tape !

Emil L. Dragic — Thu, 16 Oct 2003 06:10:13 GMT

First do:
# scu scan edt
then
# scu show edt

Or, shutdown system and from firmware level do:
>>> show dev
or
>>> show config

Regards

Re: about adding tape !

leyearn — Fri, 17 Oct 2003 00:53:22 GMT

when i execute command #scu show edt
Device: RRD46 Bus: 0, Target: 5, Lun: 0, Type: Read-Only Direct Access
Device: RZ1CB-CS Bus: 1, Target: 0, Lun: 0, Type: Direct Access
there is no entry about tape device
but when i use tar command to test tape
#tar cvf /dev/rmt0h /etc/hosts
and
#tar tv
blocksize = 40
-rw-rw-r-- 0/0 10240 Oct 17 13:51:07 2003 /etc/hosts
and it works correctly
but i want to know the bus and target address of the tape
how can i get them?

Re: about adding tape !

Ralf Puchner — Fri, 17 Oct 2003 01:43:48 GMT

#file /dev/rmt*
Maj Min
=== ====
file /dev/rmt*
/dev/rmt0a: character special (9/6150) SCSI #0 TLZ10 tape #1 (SCSI ID #6
/dev/rmt0h: character special (9/6146) SCSI #0 TLZ10 tape #1 (SCSI ID #6
/dev/rmt0l: character special (9/6144) SCSI #0 TLZ10 tape #1 (SCSI ID #6
/dev/rmt0m: character special (9/6148) SCSI #0 TLZ10 tape #1 (SCSI ID #6
/dev/rmt1a: character special (9/54278)
/dev/rmt1h: character special (9/54274)
/dev/rmt1l: character special (9/54272)
/dev/rmt1m: character special (9/54276)

# scu sho edt

CAM Equipment Device Table (EDT) Information:

Device: RRD47 Bus: 0, Target: 5, Lun: 0, Type: Read-Only Direct Access
Device: TLZ10 Bus: 0, Target: 6, Lun: 0, Type: Sequential Access
Device: RZ2DA-LA Bus: 1, Target: 0, Lun: 0, Type: Direct Access

during init of the controllers the devices may be listed in /var/adm/messages or binary.errlog.

Re: about adding tape !

leyearn — Fri, 17 Oct 2003 03:09:04 GMT

now i know
the tape device isn't configured correctly!
# scu show edt

CAM Equipment Device Table (EDT) Information:

Device: RRD46 Bus: 0, Target: 5, Lun: 0, Type: Read-Only Direct Access
Device: RZ1CB-CS Bus: 1, Target: 0, Lun: 0, Type: Direct Access
Device: DEC P01 A10 Bus: 2, Target: 7, Lun: 7, Type: Processor

# file /dev/rmt*
/dev/rmt0h: ascii text

tape isn't identified by the system!

Re: about adding tape !

Ralf Puchner — Fri, 17 Oct 2003 03:57:36 GMT

so you created a file called /dev/nrmt0h containing the backup data.

How is the tape connected?
Is it visible from srm? (>>> show dev)

Action plan:
shutdown machine and check "show dev" output. Tape seen?
NO -> check hardware/cabling
YES -> boot genvmunix and check output during boot (maybe the controller is not initialized within the kernel)
Controller seen?
NO -> check hardware/cabling
YES -> try MAKEDEV
rebuild kernel, reboot with vmunix

Re: about adding tape !

leyearn — Sun, 19 Oct 2003 00:01:51 GMT

to Ralf Puchner

thanks you very muchu
i insert the tape again with force

and then i use #scu scan edt
the #scu show edt
the following messages appears
# scu show edt

CAM Equipment Device Table (EDT) Information:

Device: RRD46 Bus: 0, Target: 5, Lun: 0, Type: Read-Only Direct Access
Device: RZ1CB-CS Bus: 1, Target: 0, Lun: 0, Type: Direct Access
Device: TLZ09 Bus: 1, Target: 4, Lun: 0, Type: Sequential Access
Device: DEC P01 A10 Bus: 2, Target: 7, Lun: 7, Type: Processor

the i use the command
#/dev/MAKEDEV tz12
now the tape works correctly
thanks again!