SUMMARY: Archive tape drive problems

From: David Markowitz <>
Date: Thu Jun 05 2003 - 12:00:56 EDT
Original question is below.  Thanks to, well, me.  No one else had
any useful suggestions, but after much digging at SunSolve I found
a bug report for Bug ID 4215896: "no tape loaded or drive offline
when accessing dds3 drive using compression".

The suggested work-around (there is no patch) is to enable
compression using the drive's switches (which I haven't tried yet).
There may also be a firmware upgrade to fix this, but since it's
not a Sun drive I won't mess with that.

The solution that works for me is to use "low density" mode (no
compression) by specifying device "0l".  The native 12 GB available
without compression on DDS3 drives is enough for my purposes.

David Markowitz wrote:
> I am trying to get an Archive DDS3 4mm tape drive working on my
> Ultra 30 running Solaris 8 (soon to be Solaris 9).  It can be
> seen by probe-scsi, and attempting a "mt stat" to it results in
> the OS detecting and configuring it as:
>         st4 is /pci@1f,4000/scsi@3/st@4,0
> scsiinfo -p reports:
>         glm0: st4,0 tgt 4 lun 0:
>                 Synchronous(10.000MB/sec) Clean NoTaggedQueuing Narrow
>                 Removable Tape: ARCHIVE  Python 04106-XXX 735B          [SL]
> ls -l shows:
>         /dev/rmt/0cn -> ../../devices/pci@1f,4000/scsi@3/st@4,0:cn
>         crw-rw-rw-   1 root     sys       33,156 Apr 25 20:19 /devices/pci@1f,4000/scsi@3/st@4,0:cn
> However, whether a tape is in or not, "mt stat" reports:
>         /dev/rmt/0cn: no tape loaded or drive offline
> and of course nothing else works, since it thinks there's no tape.
> One other detail - to get it into an external box I have that's
> designed for 3.5" drives, I had to remove its 5.25" faceplate.
> The drive seems to work fine though.
> Is there something I can add to my st.conf to make this drive work?
> Does anyone have experience using this drive on Solaris SPARC?

	David L. Markowitz			Director, UNIX Software	SSP Solutions Inc.
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Received on Thu Jun 5 12:03:43 2003

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