Re: The concept of DomU.

[Jason Long <hack3rcon@xxxxxxxxx>]

Excuse me, Xen Project running 100 guest OSes. How many DomU running?






On Sunday, August 23, 2020, 11:37:26 AM GMT+4:30, Andy Smith 
<andy@xxxxxxxxxxxxxx> wrote: 





Hello,

On Sun, Aug 23, 2020 at 02:52:45AM +0000, Jason Long wrote:
> Thus, the number of DomU is equal to the number of quest OS.


No. You don't appear to have read what Bernd wrote nor read the link
that Bernd gave you.

To restate:

Guests on Xen are called domains. A domU is an unprivileged domain.
There are other domains which are privileged, and most installs have
at least one, referred to as a "dom0", that has privileges to
control the hypervisor and access real hardware, That dom0 is still
a domain, or a guest if you want to use that terminology.

So almost all Xen installs will have more domains than domUs,
because "domU" is a subset of "domain" and most installs require a
dom0 as well. dom0 is still a domain, or "a guest" if you like.

Cheers,
Andy