tape driv eissue

[Sagar Sirdesai]

HI

There is tape Library ( HP SureStore) with 2 Ultrium 1-SCSI tape drives connected to a N Class server running 11.11 OS.
I see that every now the tape backup failes as the OS fails to identify the device associated with ethe drive . The Error is as below
/dev/rmt/2m: No such device or address

We do an ioscan I do see the tape drive
mccartney> ioscan -knfCtape
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
tape 0 0/0/1/0.3.0 stape CLAIMED DEVICE HP C5683A
/dev/rmt/0m /dev/rmt/0mnb /dev/rmt/c0t3d0BESTn /dev/rmt/c0t3d0DDSb
/dev/rmt/0mb /dev/rmt/c0t3d0BEST /dev/rmt/c0t3d0BESTnb /dev/rmt/c0t3d0DDSn
/dev/rmt/0mn /dev/rmt/c0t3d0BESTb /dev/rmt/c0t3d0DDS /dev/rmt/c0t3d0DDSnb
tape 1 0/12/0/0.1.0 stape CLAIMED DEVICE HP Ultrium 1-SCSI
/dev/rmt/1m /dev/rmt/1mn /dev/rmt/c5t1d0BEST /dev/rmt/c5t1d0BESTn
/dev/rmt/1mb /dev/rmt/1mnb /dev/rmt/c5t1d0BESTb /dev/rmt/c5t1d0BESTnb
tape 2 1/10/0/0.2.0 stape CLAIMED DEVICE HP Ultrium 1-SCSI
/dev/rmt/2m /dev/rmt/2mn /dev/rmt/c7t2d0BEST /dev/rmt/c7t2d0BESTn
/dev/rmt/2mb /dev/rmt/2mnb
/dev/rmt/c7t2d0BESTb /dev/rmt/c7t2d0BESTnb

I can also confirm that there is tape in the drive.

Please advice what could be the issue.


Sagar

[Torsten.]

/dev/rmt/2m: No such device or address

This happens if no media is loaded.

You can use "mt", "mc" or just the web panel of the library to check if a media is loaded or even move a media to the drive.

[Sagar Sirdesai]

Hi
The Tape is present in the drive.

Sagar

[Hakki Aydin Ucar]

Hi,

when you issue the command;

# mt -f /dev/rmt/2m status

what do you see ?
if you see Status: [0] there is no tape loaded in the drive OR it does not see the media somehow ,even though it is loaded.

in this case change the media that tested as working in another drive

[Sagar Sirdesai]

A new tape did the trick and the issue is resolved