Xen devel - Mar 2005 - Xen 2.05 - using printer (/dev/lp0) from a guest linux OS?

Is there any way for the guest OS to use the printer?

Right now, my debian guest OS (using the xen linux 2.6 unpriv kernel)
can''t see the printer at all.

My dom0 OS is ubuntu, based on debian.

Thanks.


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> Is there any way for the guest OS to use the printer?
If it''s a USB printer, you could try exporting it (exclusively) to the
guest using the new USB virtualization stuff.

If you want to share the printer between domains, use CUPS, LPRng or
Samba as you would for sharing a printer between physical machines.

Ian
> Right now, my debian guest OS (using the xen linux 2.6 unpriv kernel)
> can''t see the printer at all.
> 
> My dom0 OS is ubuntu, based on debian.
> 
> Thanks.
> 
> 
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from 
> real users.
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No, it''s an old parallel port printer... I was hoping for a way to
export /dev/lp0 to the guest, but it doesn''t sound like
there''s a way.

I wanted to set up a print server in a guest OS, then move the guest OS
setup to a bootable CD and have a stateless print server... xen would
make this a little easier since reboots are faster... using lpr might be
close enough for testing.

On Sun, 27 Mar 2005 21:07:48 +0100, "Ian Pratt"
<m+Ian.Pratt@cl.cam.ac.uk> said:
> > Is there any way for the guest OS to use the printer?
> 
> If it''s a USB printer, you could try exporting it (exclusively) to
the
> guest using the new USB virtualization stuff.
> 
> If you want to share the printer between domains, use CUPS, LPRng or
> Samba as you would for sharing a printer between physical machines.
> 
> Ian
> 
> > Right now, my debian guest OS (using the xen linux 2.6 unpriv kernel)
> > can''t see the printer at all.
> > 
> > My dom0 OS is ubuntu, based on debian.
> > 
> > Thanks.
> > 
> > 
> > -------------------------------------------------------
> > SF email is sponsored by - The IT Product Guide
> > Read honest & candid reviews on hundreds of IT Products from 
> > real users.
> > Discover which products truly live up to the hype. Start reading now.
> > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/xen-devel
> > 

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> No, it''s an old parallel port printer... I was hoping for a way to
> export /dev/lp0 to the guest, but it doesn''t sound like
there''s a way.
Xen (the unstable.bk version) has the capability to expose individual
ISA devices to guests. However, the control tools haven''t caught up
with
this yet.

You can do it in a hacky way for the moment though, by giving the domU
full IO privilege. If you do this, you''ll have to be careful to ensure
that only one domain has a driver for the parallel port, otherwise bad
things will happen if they both try to access it.

Ian 
 
> I wanted to set up a print server in a guest OS, then move 
> the guest OS
> setup to a bootable CD and have a stateless print server... xen would
> make this a little easier since reboots are faster... using 
> lpr might be
> close enough for testing.


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