It sounds to me that you have this device strapped to be in 'stacker' mode-
the command you're sending is the same as an 'mt offline' command- so it's
loading the next tape in the changer.
that means it won't show up as a changer on lun 1. I haven't seen one these
beasts for 5-6 years- I don't recall what the switch settings are, but IIRC HP
switch settings made no sense.
On Tue, 1 Feb 2000, Dmitry Samersoff wrote:
> Dan Nelson wrote:
> >
> > In the last episode (Jan 31), Dmitry Samersoff said:
> > > I have problem with HP SureStore 24x6 I can read(write) only from one
> > > tape from catridge
> > >
> > > Could anybody send me ether shell or C (preferable) sequence need to
> > > read tapes one by one?
> > >
> > > i.e something like:
> > > cat /dev/rsa0
> > > camcontrol cmd -n rsa0.ctl -c "1B 00 00"
> >
> > You'll probably want to check out the "mt" and "chio" commands instead
> > of sending raw SCSI commands :) "mt rewoffl" will rewind and eject a
> > tape. The chio command manages autoloaders. "man mtio" for the C tape
> > interface, and "man ch" for the C autoloader interface.
>
> I'm not so lazy as you belive ;-)) I tried all above before going
> to camcontrol.
> mt can rewind, erase end so on current tape, but can't change
> current slot number.
> chio report error for every comand except "chio status" .
>
> I find now (after lots of experiments) that sending raw SCSI command
> helps me.
> Right command causing changer to load next tape looks like:
> camcontrol stop -n sa -t 100 -v
> camcontrol cmd -n sa -t 100 -v -c "1B 00 00 00 00 00"
>
>
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