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external tape drive showing as sdisk within ioscan

 
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awilken
Visitor

external tape drive showing as sdisk within ioscan

Hello,

 

 

I have had problems with a tape drive LTO Ultrium 5 - and its no longer working.

 

I have run ioscan -fnCtape  - nothing returned

I have run ioscan -funCtape - again nothing.

I removed device files under /dev/rmt and then ran insf -e, but still doesn't work - and /dev/rmt is empty.

 

Running ioscan -fn I see the follwoing entry for the tape drive:

 

disk       43  0/0/0/9/0/0/0.128.16.4.0  sdisk          CLAIMED     DEVICE       HP      Ultrium 5-SCSI
                              /dev/dsk/c2t4d0   /dev/rdsk/c2t4d0

 

I have done the following:

rmsf -H 0/0/0/9/0/0/0.128.16.4.0

then insf -e

Still nothing in /dev/rmt

 

I've never seen this before!! Can anyone help/advise - has anyone seen this before??

 

Many thanks,

Annelise

 

 

4 REPLIES
Bill Hassell
Honored Contributor

Re: external tape drive showing as sdisk within ioscan

This tape is on a fibre connection so is it a direct connect or part of a SAN fabric?

Have any SAN switch modifications been made recently?

The easiest way to isolate the switch is to bypass it and plug a fibre cable direct between tape and computer.



Bill Hassell, sysadmin
awilken
Visitor

Re: external tape drive showing as sdisk within ioscan

This is the odd thing ..... it isn't fibre attached.

 

Tape unit os directly attached to the server via a single HP SAS cable.

 

Regards,

Annelise

Torsten.
Acclaimed Contributor

Re: external tape drive showing as sdisk within ioscan

Is the server running 11.31?

 

Try

 

# ioscan -m lun | grep tape

 

# scsimgr -p get_attr all_lun -a hw_path -a device_file -a wwid -a serial_number | grep tape

 

# ioscan -fnNCtape

 

Anything changed recently? Tape drive replaced online?


Hope this helps!
Regards
Torsten.

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awilken
Visitor
Solution

Re: external tape drive showing as sdisk within ioscan

Ok I have fixed it as follows, (just letting everyone know in case someone else has a similar problem to this:)

 

 

1. Powered tape unit off

2.rmsf -h 64000/0xfa00/0x2 (I did actually try this earlier (see above); however I was using the legacy device file, which didn't work, running this again but with the agile device file removed it.)

3.Power tape unit back on

4. ioscan

 

Tape unit is now visible with appropriate device files etc...