On Sun, 2001-12-30 at 00:16, Ted Hilts wrote:
> I need some basic information about tape units in the Linux
> environment.  I understood - perhaps incorrectly - that TAR would work
> with any tape unit as long as the tape unit was properly designated in
> the system. This was according to the builder of the Linux Box.  
>
> IS IT NECESSARY TO INSTALL DRIVERS before Linux can utilize a tape unit
> or do the drivers come as part of Linux?  The tape unit is Seagate model
> #STT28000A-RF ATAPI drive - Travan 8 Gig.
> 
> If drivers are required and if they were installed where would I look
> for them and how would I reenable them?  The tape unit is not working
> after the Linux box was serviced and several technicians told me that
> there were no drivers installed. But I am fairly certain the tape unit
> worked when the box was built and was sent in for service.  I could be
> mistaken because the box went in for servicing just after it was built.
> It's been many months since this happenned and I am just getting around
> to dealing with the problem.  ARE THERE ANY LINUX TAPE EXPERTS OUT
> THERE?  I would appreciate your suggestions.

Please, no need to shout. I do mot consider myself a tape expert, but
since I have had both ATAPI and later SCSI tapes working under linux, I
can help.

First make sure it's getting recognized. Check /var/log/messages - it
should shouw up as /dev/ht0

Second, make symlink to that device from /dev/tape. This just lets
programs like mt use it without having to specify the device.

Third, unless you have compiled your own kernel, the ide-tape module
should get loaded automatically when you try use the tape. If you have
built your own kernel make sure it is included either as a module or
compiled in. You can do a lsmod to see if the module is loaded.

Try and use it. You can do things like 

mt status
mt rewind
mt retension

etc. If they work, try tarring something to it

tar czf /dev/tape /etc
tar tzf /dev/tape

Let us know if any of these steps fail and we can help determine why.

If you are in fact mistaken about this being atapi, everything I just
said is still valid, except the device will appear as /dev/st0.

One last thing. I have not done this myself, but have heard that using
scsi emulation for the atapi drive works well, and allows you to use
backup programs that usually won't work with atapi drives because of
differences in the wayt mt treats the drives. I plan on trying this
soon.
 
> Thanks, Ted

welcome 

charles



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