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

from [Markus Armbruster] [Permanent Link][Original]
To: Christian.Limpach@xxxxxxxxxxxx
Subject: Re: [Xen-devel] Q: How to find own domid or uuid from domU?
From: Markus Armbruster <armbru@xxxxxxxxxx>
Date: Tue, 23 May 2006 09:52:00 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, "Andrew D. Ball" <aball@xxxxxxxxxx>
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"Christian Limpach" <christian.limpach@xxxxxxxxx> writes:

> There's a uuid node under the vm path.  I.e. you'd do:
> vmpath=$(xenstore-read vm)
> uuid=$(xenstore-read $vmpath/uuid)

Works in dom0:

    # xenstore-read vm
    /vm/00000000-0000-0000-0000-000000000000
    # xenstore-read /vm/00000000-0000-0000-0000-000000000000/uuid
    00000000-0000-0000-0000-000000000000

Fails in domU:

    # xenstore-read vm
    /vm/947df77a-58b5-4e3d-9b6c-aa0178d8e133
    # xenstore-read /vm/947df77a-58b5-4e3d-9b6c-aa0178d8e133/uuid
    xenstore-read: couldn't read path 
/vm/947df77a-58b5-4e3d-9b6c-aa0178d8e133/uuid

Please advise.

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