[Fwd: Re: [Xen-users] Intel/VT success :-)]

["Andrew D. Ball" <aball@xxxxxxxxxx>]

Forwarding to xen-users ...
-------- Forwarded Message --------
> From: Andrew D. Ball <aball@xxxxxxxxxx>
> Reply-To: aball@xxxxxxxxxx
> To: Thorolf Godawa <nospam@xxxxxxxxx>
> Subject: Re: [Xen-users] Intel/VT success :-)
> Date: Wed, 08 Feb 2006 10:01:44 -0500
> On Wed, 2006-02-08 at 14:22 +0100, Thorolf Godawa wrote:
> > Hi,
> > 
> > finaly I had success getting running VMX-guest on Intel/HT.
> > 
> 
> Congratulations!
> 
> > Thanks to everybody who helped me and answered my questions!
> > 
> > One thing was getting SLES 10.0 Beta3 with working XEN-support, then
> > using only the i386 without PAE (PAE is not yet supported in XEN 3.0,
> > and the x86-64-Version of SLES is not yet there) and finaly the
> > understanding that you have to free memory of the xen0-domain before
> > starting the VMX-xenU-domains - the paravirt. Linux-xenU-domains seems
> 
> What do you mean by VMX-xenU-domains ?  It's probably better to just
> talk about para-virtualized domU's [or just domU's, since this is the
> default] or fully virtualized domU's.
> 
> > to take there memory from the xen0-domain by themselves and it was
> > working like that.
> 
> That's interesting.  I think dom0 uses the balloon driver to dynamically
> reduce its memory footprint as needed.  I don't think the fully
> virtualized domU's can dynamically adjust their memory footprints, but I
> don't see why dom0 can't adjust its footprint to accommodate a fully
> virtualized domU.
> 
> > 
> > Beside the the stability not is perfectly and the sometimes the
> > Linux-xenU-domains are hanging while booting I still have some problems:
> 
> > 
> > If I connect via VNC to a W2k3-guest everything is working, but the
> > mouse-cursor in the guest is always far away from the cursor in the host
> > and the reaction-time is very bad. 
> 
> This is a well-known problem.  It affects more than just the mouse
> cursor and has to do with the way the device model is set up at the
> moment.  It will take some time before this is fixed, as it will
> probably require some re-thinking and clever methods.  There is a whole
> lot of interest in this area though.
> 
> > I tried this with VNC-viewers for
> > Linux, OS/2 and even Windows, but always the same result!
> > 
> > With every boot I get the "TLS-warnig", but in the installation there is
> > no /lib/tls-directory. How can I avoid this warnig and are there still
> > some performance-problems?
> > 
> > I'm not able to migrate domains using the "xm migrate", I can save and
> > restore domains even if I restore the on a different host, but mirgrate
> > doesn't work.
> 
> It's likely that xend is not listening to other hosts.  This can be
> changed by editing /etc/xen/xend-config.sxp, but be warned that this
> really doesn't have much security at all.  At the very least, you will
> need to run live migrations on a physically separate network.
> 
> > 
> > Any ideas? Thanks a lot for your help!
> 
> Good luck!
> Glad to hear you got VMX domains working.
> Andrew


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