Re: [Xen-users] RESOLVED !!!! Console hangs on Xen 3.1 Ubuntu Feisty Server

[Rafał Kupka <rkupka+Listy.Xen@xxxxxxxxxxxxx>]

On Fri, Jul 27, 2007 at 02:02:34PM +0200, Sébastien CRAMATTE wrote:
> Steve Kemp escribió:
Hello,

> >   When, specifically, is xvc0 used?
> >
> > Steve
> >   
> Seems that is problem with xen 3.1 only ...

It depends on DomU kernel. Newer ones do use xvc0.

I have Xen 3.0.3-1 and 2.6.20 kernel[1] (with fedora-2.6.20-48670.patch)
and DomUs have console on /dev/xvc0 (major 204, minor 191).

Patch fragment about file drivers/xen/console/console.c says:
 * Modes:
 *  'xencons=off'  [XC_OFF]:     Console is disabled.
 *  'xencons=tty'  [XC_TTY]:     Console attached to '/dev/tty[0-9]+'.
 *  'xencons=ttyS' [XC_SERIAL]:  Console attached to '/dev/ttyS[0-9]+'.
 *  'xencons=xvc'  [XC_XVC]:     Console attached to '/dev/xvc0'.
 *                 [XC_DEFAULT]: DOM0 -> XC_SERIAL ; all others -> XC_TTY.
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
but on my system default on DomUs is xvc (no xencons= kernel parameter)

Kupson
[1] Old debian sid kernel, last one with Xen patch included.

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