Re: [Xen-users] question about Xen DOMU

[Tanuj Bansal <bansal.tanuj83@xxxxxxxxx>]

It does not matter whether you have xen kernel or simple on DomU. If it is DomU then you have /proc/xen/

 

cat /proc/xen/balloon
Current allocation:   307200 kB
Requested target:     307200 kB
Low-mem balloon:        8192 kB
High-mem balloon:          0 kB
Driver pages:            152 kB
Xen hard limit:          ??? kB

 

 ls  /proc/xen/
balloon  capabilities  privcmd  xenbus

 

Tanuj

 

 

On many modern distributions the xen0 and xenU kernels are exactly the same, so a dom0 and a domU will display similar uname information.  However, as you say, there are other ways to tell, like device names (although, those can be set to almost anything you like), dmesg output, proc info, etc.

-Nick

>>> On 2009/04/01 at 08:34, "Ferreira, N. L. (Nuno)" <n.l.ferreira@xxxxx> wrote:

Hi Mark

A "uname -a" indicates that your are running a xen domU, if it is a PV
domU. A "ls /boot" would indicate the same. Of course you could change
the name of the kernel. In a HVM domU probably you do not need since you
are using a kernel without modifications
.
A "more /etc/fstab" can also indicate that the devices being used are
xenified (depends on your configuration). I for example, use /dev/xvda1
as my partition, to not forget that its a Xen box ;-)

Probably there are other ways to check it ...
Cheers,
N.

Mark Ryden wrote:
> Hello,
>   A newbie question about Xen DOMU:
>
> I have a Linux Fedora running in a Xen DOMU. Is it possible for somebody
> accessing this DOMU from outside (ssh) to know that it is not
> a real machine but a DOMU of Xen (by something like uname,etc)? In
> case it is possible
> I would appreciate if anybody can tell how.
>
> Regards,
> Mark
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>

--
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NMR Spectroscopy Research Group
Bijvoet Center for Biomolecular Research
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P: +31.(0)30.253 9932
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