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Re: [Xen-devel] Q: How to find own domid or uuid from domU?

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Q: How to find own domid or uuid from domU?
From: "Andrew D. Ball" <aball@xxxxxxxxxx>
Date: Thu, 18 May 2006 10:53:03 -0400
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I think it would be really, really good if the UUID would be exposed via sysfs in domU's.

Peace.
Andrew

Keir Fraser wrote:

>
> On 18 May 2006, at 14:18, Markus Armbruster wrote:
>
>>> If it's only management tools looking to obtain info about other
>>> running domains, there's already a dom0_op for querying uuid info.
>>>
>>> Is there any reason a domain needs to know its *own* uuid?
>>
>>
>>
>> It's management tools looking to obtain info about their own domain.
>>
>> Consider a network-enabled stat-gathering, managing, or monitoring
>> tool running on domU.  It wants to uniquely identify itself to the
>> peer.  IP or MAC can work in some environments, but in others they're
>> ephemeral.  UUID would be much better.  It's the only thing that known
>> never to change, isn't it?
>
>
>
> Ok makes sense.
>
> Adding a new op to the version hypercall will be fine.
>
>  -- Keir
>
>
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