Re: [Xen-devel] XCP: python SR plugin questions

Jonathan Ludlam
Wed, 19 May 2010 09:00:16 -0000

Hi there,

On 19 May 2010, at 03:35, YAMAMOTO Takashi wrote:

> hi,
>
> i''m writing a python sr plugin for our product and have a few
questions.
>
> - our product has 32-bit id, not uuid, for each volumes, which i want to
map
>  to xcp''s vdi.  i generate name-based uuid from the 32-bit id in
sr.scan and
>  vdi.create.  is this a reasonable approach?
>

You can use the ''location'' field in the VDI to contain your 32
bit id - then the uuid is irrelevant. I''d like to move more of the
storage backends in this direction - currently I believe only the ISO SR does it
this way.

> - how can i get name-label specified by "xe vdi-create" in my
vdi.create?
>  i want to pass it to our product.
>

Unfortunately this isn''t possible at the moment. What you could do is
pick the name up on a subsequent scan. This is ugly, I know, and might not even
work if you need the name at VDI create time, but it''s all
we''ve got at the moment. This is on my list of things to fix about the
SMAPI.

> if you are intersted, the "our product" is found at
> http://sourceforge.net/projects/vastsky/
>
> YAMAMOTO Takashi
>
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