5:52 p.m.
I'm trying to setup my virtual machines to display in an xterm window
rather than a VNC window. The guests and host are Fedora 7; the guest
only needs to run in a console mode (no X11). I see a bit on
http://libvirt.org/format.html about using a console tag instead of
graphics in my XML, but I can't figure out how to connect to that.
With our older Xen on Fedora Core 5 setup, we used the following
command to create a guest and it worked great; I'm trying to
approximate something similar with libvirt/KVM on Fedora 7:
xterm -e "/usr/sbin/xm create -c guest.xen"
A notable advantage of using an xterm over VNC is that we can resize
the window; with VNC as far as I've been able to see, we've been stuck
with the default 80x24 window. We also can't copy and paste text from
the VNC window to other applications.
Any suggestions would be appreciated. I am currently using
libvirt-0.3.2-1.fc7; if this is something that we'll have to wait for
a newer version that will be in Fedora 8, that's okay.
- David
11:59 p.m.
On Thu, Oct 18, 2007 at 03:52:59PM -0700, David Mueller wrote:
I'm trying to setup my virtual machines to display in an xterm
window
rather than a VNC window. The guests and host are Fedora 7; the guest
only needs to run in a console mode (no X11). I see a bit on
http://libvirt.org/format.html about using a console tag instead of
graphics in my XML, but I can't figure out how to connect to that.
With our older Xen on Fedora Core 5 setup, we used the following
command to create a guest and it worked great; I'm trying to
approximate something similar with libvirt/KVM on Fedora 7:
xterm -e "/usr/sbin/xm create -c guest.xen"
First off Xen != KVM. Xen by provides a text based console for access
to the paravirt guests only.
KVM though is fully virtualized and (as with Xen fullvirt) does not provide
a text based console. It merely emulates a Cirrus Logic graphics card as
its default output. This is connected to either a X window, or a VNC server.
A notable advantage of using an xterm over VNC is that we can resize
the window; with VNC as far as I've been able to see, we've been stuck
with the default 80x24 window. We also can't copy and paste text from
the VNC window to other applications.
The VNC server runs in whatever resolution you configure the guest display
in. The Cirrus graphics card can do any resolution upto 1024x768. If you
want something other than a 80x24 text mode them you need to tell the guest
OS to run the text console in framebuffer mode.
Any suggestions would be appreciated. I am currently using
libvirt-0.3.2-1.fc7; if this is something that we'll have to wait for
a newer version that will be in Fedora 8, that's okay.
The closeest you'll get to a Xen paravirt style text console is to configure
the serial console as your primary display. This requires configuring grub,
the kernel, and inittab so won't work by default like a Xen console would
Dan.
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4:10 a.m.
Daniel P. Berrange wrote:
On Thu, Oct 18, 2007 at 03:52:59PM -0700, David Mueller wrote:
> I'm trying to setup my virtual machines to display in an xterm window
> rather than a VNC window. The guests and host are Fedora 7; the guest
> only needs to run in a console mode (no X11). I see a bit on
> http://libvirt.org/format.html about using a console tag instead of
> graphics in my XML, but I can't figure out how to connect to that.
>
> With our older Xen on Fedora Core 5 setup, we used the following
> command to create a guest and it worked great; I'm trying to
> approximate something similar with libvirt/KVM on Fedora 7:
>
> xterm -e "/usr/sbin/xm create -c guest.xen"
First off Xen != KVM. Xen by provides a text based console for access
to the paravirt guests only.
KVM though is fully virtualized and (as with Xen fullvirt) does not provide
a text based console. It merely emulates a Cirrus Logic graphics card as
its default output. This is connected to either a X window, or a VNC server.
Does KVM provide access to the serial console? Or perhaps the OP could
try mingo's netconsole?
http://lxr.linux.no/source/Documentation/networking/netconsole.txt
The closeest you'll get to a Xen paravirt style text console is
to configure
the serial console as your primary display. This requires configuring grub,
the kernel, and inittab so won't work by default like a Xen console would
The original poster will find the HOWTO on this very useful:
http://tldp.org/HOWTO/Remote-Serial-Console-HOWTO/
Rich.
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Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
England and Wales under Company Registration No. 03798903
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2 comments
3 participants
participants (3)
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Daniel P. Berrange -
David Mueller -
Richard W.M. Jones