I thought there was an pvfb frontent, too, but I've never actually
used it.
For Linux consoles, virtual keyboard / mouse (e.g. for watching
kernel messages) is not necessary because the XEN hypervisor console
offers all capabilities of usual framebuffers, too. In addition,
although quite common nowadays, desktops should not be part of a
server system, web-based or remote administration GUIs are usually
less resource consuming (on the server), provide more secure access
and are easier to access (in case of web administration GUIs).
If someone really wants a desktop, it would be much better on Linux
not to install a full X server with input and video drivers, but
instead using a VNC server which usually is more lightweight (You
would access your virtual desktop with VNC anyway, it's just the
question whether Dom0 or DomU is providing the VNC service).
Felix
Am 27.08.2010 12:45, schrieb Jonathan Tripathy:
RE: [Xen-users] Why HVM?
> Hi Jonathan,
>
> The only big advantage is that customers can install
operating systems
that do
> not support pv operation (e.g. Windows). Some small
advantages like
using own
> GRUB or kernels can be achieved in pv environment, too
(pvgrub,
pygrub), but
> those hosters probably don't enable that for pv VPS.
> Another little point is that not all HVM features are
available for pv
guests,
> especially with pv_ops guest and host kernels (for
example: USB
passthrough,
> PCI / VGA passthrough; the first two not yet with
pv_ops kernels, VGA
> passthrough is always only available for HVMs). But as
long as you
don't want
> to offer physical hardware to your clients, this
doesn't matter for
VPS
> hosting.
>
> Probably I missed an important point, but AFAIK there
is no advantage
of
> having a Linux server system in a HVM instead of a PV
VM.
>
How good is VNC access under PV these days? With HVM you get
a virtual
keyboard, video, and mouse which can get you out of trouble
if you do
something dumb and lose network access.
James
-----------------------------------------------------------------
Hi James,
I just use xm console to get access to my
linux shell without network access. VNC (for desktop PV
environments) works fine if you install a VNC server (however
this is network based)
Cheers
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