Network configuration problem

Hello,

During a network install it seems that my new guest cannot access the 
network.  Both NFS and HTTP installs have failed.  I tried the NFS 
install from the same host, but alas no luck.

I am using virt-manager.  All machines are on a private subnet and when 
prompted for an id, I give the new VM an unassigned ID with the same 
subnet (141).  Should I be using the 122 subnet that virbr0 is assigned?

The new machine ID is 7, so vif7.0 shows up under brctl and ifconfig.  I 
am trying to NFS mount 192.168.141.5 (the host machine).  Nothing shows 
up in the logs that a connection attempt is made, so my new machine is 
not getting to the network.

Can anyone give me an idea of why my network won't work?  Attached are 
brctl, ifconfig and /var/log/messages output.

Sorry for the noob question and thank you for any assistance.

Cam

Here is brctl output:

bridge name     bridge id               STP enabled     interfaces
virbr0          8000.feffffffffff       no              vif7.0
xenbr0          8000.feffffffffff       no              peth0

Here is /var/log/messages:

Re: PV 32-in-64 ? Howto ?

> D'oh!  My mistake!!  You can run 32 bit HVM guests no problem on a 64
> bit dom0, but you can't run 32 bit PV guests on a 64 bit dom0.

Since 3.1 you can run 32-bit PV guests on a 64-bit Xen.  You can even run a 
32-bit dom0 on a 64-bit Xen and still have 64-bit domUs running.  The 32-bit 
guests have to use PAE, though.

32-bit PV guests on Xen are, from what I've heard, better peforming than the 
64-bit PV guests...

> I really want to make a grid to add to the faq:

So now we have:

                               Xen
                   -----------------------------------------
                   32bit   32-bit/PAE   64bit

 Dom0 32-bit       yes     no           no
 Dom0 32-bit PAE   no      yes          yes
 Dom0 64-bit       no      no           yes

 dU 32bit PV       yes	   no           no
 dU 32-bit PAE PV  no      yes          yes
 dU 64bit PV       no      no           yes

 dU 32bit HVM      yes     yes          yes
 dU 32-bit PAE HVM no      yes          yes
 dU 64bit HVM      no      no           yes

Keyboard Issue inside Debian Etch HVM

Hello,

I've just installed an HVM debian etch.
Works fine except a very anoying  keyboard issue !

Seems that my keyboard keymap (Qwerty Spanish keyboard) is not reconized
properly

atkbd.c : Unknow key pressed ...
atkbd.c : Use 'setkeycodes 00 <keycode>' to make it know on 
isa0060/serio0).
atkbd.c : Unknow key released ...

any ideas ?

Regards

RE: Keyboard Issue inside Debian Etch HVM

> Hello,
> 
> I've just installed an HVM debian etch.
> Works fine except a very anoying  keyboard issue !
> 
> Seems that my keyboard keymap (Qwerty Spanish keyboard) is not reconized
> properly
> 
> atkbd.c : Unknow key pressed ...
> atkbd.c : Use 'setkeycodes 00 <keycode>' to make it know on
> isa0060/serio0).
> atkbd.c : Unknow key released ...
> 
> any ideas ?

I see that sometimes too when I press control or shift, so it might not be your keyboard mapping...

James

How to configure Xen0

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Re: PV 32-in-64 ? Howto ?

Hi,

here another Matrix, hopefully correct, which includes PAE.

Hypervisor  dom0        domU(PV)               domU(HVM)

32-bit      32-bit      32-bit                 32-bit

32-bit PAE  32-bit PAE  32-bit PAE             32,- or 32-bit PAE

64-bit      64-bit      64-bit or 32-bit PAE*  32-, 32-PAE or 64-bit 

Jurgen

-------- Original-Nachricht --------
Datum: Tue, 31 Jul 2007 12:18:20 -0700
Von: Dylan Martin <dmartin <at> sccd.ctc.edu>
An: "Sébastien CRAMATTE" <s.cramatte <at> wanadoo.fr>
CC: xen-users <at> lists.xensource.com
Betreff: Re: [Xen-users] PV 32-in-64 ? Howto ?

> D'oh!  My mistake!!  You can run 32 bit HVM guests no problem on a 64
> bit dom0, but you can't run 32 bit PV guests on a 64 bit dom0.
> 
> I really want to make a grid to add to the faq:
> 
> 			    	Dom0
> 				32bit	64bit
> D  32bit PV  	yes		no
> o  64bit PV		??		yes
> m  32bit HVM	yes		yes	
> U  64bit HVM	??		yes
> 
> Does anyone have anything to add/fix about that grid?  Especially
> if/when you can run a 64bit domU on a 32bit dom0?
> 
> -Dylan
> 
> > > But I must Install  a 32bits PAE kernel in dom0 and setup properly in
> > > the config file isn't it ?
> > > When I try to instal 32bits kernel package dom0 tell me that the
> > > architecture is incorrect.
> > >
> > > If I run the 32 bits domU with the dom0 kernel  and uname -a return
> > > x86_64 inside the domU.
> > > In reality I just need to install a 32 bits domU to compile a 32bits
> > > kernel for another application.
> > >
> > > make menuconfig  detect that I'm on 64bits architecture so I can't
> > > choose 32bits processor.
> > >
> > >
> > >
> > >
> > > Mark Williamson escribió:
> > >   
> > >>> I believe you just install the 32 bit OS.  It's like running 32 bit
> > >>> linux on a 64bit box.  You don't need to tell the box it's running a
> > >>> 32 bit OS.
> > >>>
> > >>> Of course, I could be wrong...
> > >>>     
> > >>>       
> > >> If you install a 32-bit filesystem and boot it using a 32-bit PAE
> XenLinux 
> > >> kernel, Xen will recognise that it's a 32-bit guest and set things up
> > >> appropriately.
> > >>
> > >> Cheers,
> > >> Mark
> > >>
> > >>   
> > >>     
> > >>> -Dylan
> > >>>
> > >>>     
> > >>>       
> > >>>> Hello,
> > >>>>
> > >>>> Does anyone know which is the setup to run paravirtualized domu
> 32bits
> > >>>> inside a dom0 64bits...
> > >>>> I've got Xen 3.1
> > >>>>
> > >>>> Do I must add something to the config file ?
> > >>>> Do I should install 32bits kernel ?
> > >>>>
> > >>>> Regards
> > >>>>
> > >>>>
> > >>>> _______________________________________________
> > >>>> Xen-users mailing list
> > >>>> Xen-users <at> lists.xensource.com
> > >>>> http://lists.xensource.com/xen-users
> > >>>>       
> > >>>>         
> > >>> _______________________________________________
> > >>> Xen-users mailing list
> > >>> Xen-users <at> lists.xensource.com
> > >>> http://lists.xensource.com/xen-users
> > >>>     
> > >>>       
> > >>
> > >>   
> > >>     
> > >
> > >
> > >   
> > 
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users <at> lists.xensource.com
> > http://lists.xensource.com/xen-users
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users <at> lists.xensource.com
> http://lists.xensource.com/xen-users

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Re: Re: PV 32-in-64 ? Howto ?

On 7/31/07, Stephan Seitz <nur-ab-sal <at> gmx.de> wrote:
> Well, I *have* a 64 bit dom0 with a 32 bit PV guest running. But the
> kernel is a 64 bit kernel. But since a 64 bit kernel can run 32 bit
> applications (if the configure options are set), there is no problem.
>
> I installed a 32 bit base system (debootstrap --arch i386 etch <target>)
> as a DomU, compiled a 64 bit kernel in the 64 bit Dom0 (with 32 bit
> support) and everything works fine.

How does that compare to 32bit full virtualized domU running under
64bit dom0? There must be some perfomance loss because of the 32bit
emulation with 64bit kernel...

I cannot make my 32bit centos5 dom0 kernel to see all memory in my
machine for some reason, so I'm thinking all these other options as I
need a 32bit domU. Your option seems interesting as I would not have
to ditch the centos rpm packaged xen. Do you know if the redhat/centos
xen kernel has 32bit emulation enabled?

Regards,
Peter

Re: Show DomU login dialog instead of Dom0's

I tried this and it looks like as it will work but I have still some 
problems.
I boot my system like every day and run the commands provided:

X :1 vt1 &
vncviewer -display :1 -FullScreen localhost &

and everything works fine. I have my Windows running on tty1 and the 
Dom0 on tty7 as I wanted it. But using the same commands in 
/etc/rc.local the vncviewer says that he could not connect to the 
server. Sometimes after this error I cannot use my PC locally and I have 
to kill all running X servers via a ssh connection.
Maybe the hvm is not running when the commands from rc.local are 
executed but in my mind it should because rc.local is the last script 
running during boot time.

The second thing which is not that important (maybe I can use another 
implementation of vnc) is the point curser shown in addition to the 
native cursor of Windows. The problem is that both cursors do not have 
the same speed so sometimes the X cursor stops at the border of the 
screen and the Windows cursor is elsewhere on the desktop. I tried 
DotWhenNoCursor=0 but it had no effect.

Greetings,
Markus

Mark Williamson schrieb:
>> is it possible to login into a DomU (Windows) without beeing logged in
>> in the Dom0 on the same PC where Xen runs? So I want to have something
>> like the Windows login screen on e. g. tty2 so I do not need to login
>> twice (first in Dom0 and the second one in the DomU).
> 
> You'd want to auto-start the Windows domU at boot time.  You can do that by 
> enabling the xendomains init script, and symlinking the config file for the 
> Windows domU into /etc/xen/auto, I believe.  I'm not sure what is done for 
> Xend managed domains, though.
> 
> Then you'd want to alter the init scripts of dom0 to start a fullscreen X 
> server running a VNC viewer (or direct framebuffer viewer) attached to the 
> guest.
> 
> e.g. you could put something in /etc/rc.local like:
> 
> #!/bin/sh
> 
> X :1 &
> vncviewer -display :1 -fullscreen localhost:<vncdisplay>
> 
> So that you'll start up a second X server and get a VNC viewer running on it 
> attached to the domain.  You might need to mess around with the options a bit 
> because I made them up 
> 
> Once you've done that you'll be able to switch between the ordinary TTYs, 
> dom0's login screen (usually on X display :0, ctrl+alt+f7) and the domU's 
> login screen via VNC.
> 
> How does that sound?
> 
> Once you've got that working you can always try more complicated setups.  e.g. 
> run a compositing manager like compiz and arrange to have a login screen for 
> each domU be on a different side of the cube.  You could even have a login 
> screen for dom0 be on one side of the cube if you set it up right 
> 
> Cheers,
> Mark
> 

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external USB HDD exclusive for HVM domU?

Hi there,

just a short question:

Does someone know if it's possible to use an USB HDD in one HVM domU?

It doesn't need to be the particular USB device, deligating the whole
USB controller to this single domU wouldn't hurt either.

Also reconfiguration isn't an issue, as - if it's possible - USB devices
would only be used by one domU.

Thanks in advance!

Stephan

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boot time error

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