Xen users - Mar 2006 - talking about usb, cdrom, cpu and vcpu

hi, i have many questions about my doubts:

i use xen 3.0.0

can i manage usb with domUs? if yes how?

how can i manage cdrom? who and how manage who can access it? dom0?

i didnt find on manuals documentation about cpu... i made some try...
with the conf file of domU i can set one cpu with cpu="n", i tried to
do
cpu="1-3" but it takes only the 1st... not from one to third... hoc
can
i do that?
then... i cant change the number of vcpus of a domain running, with xm 
vcpu-set domID #vcpu ... the command seem to work but with xm vcpu-list 
i dont see my changes...
so i have to reboot the domU changing vcpus="n" for make it change...
xm vcpu-pin domId vcpuID #cpu works great...

any documentations about it?

Thanks,
Enrico

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nobody has something to say about those questions? :)

> hi, i have many questions about my doubts:
>
> i use xen 3.0.0
>
> can i manage usb with domUs? if yes how?
>
> how can i manage cdrom? who and how manage who can access it? dom0?
>
> i didnt find on manuals documentation about cpu... i made some try...
> with the conf file of domU i can set one cpu with cpu="n", i
tried to
> do cpu="1-3" but it takes only the 1st... not from one to
third... hoc
> can i do that?
> then... i cant change the number of vcpus of a domain running, with xm 
> vcpu-set domID #vcpu ... the command seem to work but with xm 
> vcpu-list i dont see my changes...
> so i have to reboot the domU changing vcpus="n" for make it
change...
> xm vcpu-pin domId vcpuID #cpu works great...
>
> any documentations about it?
>
> Thanks,
> Enrico
>

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>> can i manage usb with domUs? if yes how?
You''ll be able to dedicate an entire USB controller to a domain using
PCI
device assignment in 3.0.2...

USB virtualisation will appear some time in the future.
>> how can i manage cdrom? who and how manage who can access it? dom0?
You can give guests access to it if you want, as a normal virtual block 
device. But it''s not a particularly convenient way to work - for
instance,
they won''t see it as a normal CD-ROM, won''t be able to eject
it, won''t be
able to drive a writable CD-ROM device...

(nb.  VMX guests have less limitations regarding CD-ROM access)

HTH,
Mark

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