Re: [Xen-users] Recovering resources from old guests

["Fajar A. Nugraha" <fajar@xxxxxxxxx>]

On Tue, Apr 6, 2010 at 4:27 AM, Caleb Call <caleb@xxxxxxxxxxx> wrote:
> We currently have several old guests that we are removing from the inventory
> and recovering their resources.  I've ran in to a minor (probably very
> simple) issue.  Instead of using logical volumes like the rest of our
> guests, these ones are using tap:aio:  The main question is, is there
> anything special I need to do to reclaim the resources from these disks, or
> is it as simple as just deleting these images?

That's pretty much it. Make sure the guest is not running, then you
can delete the file images.

>  My second(ary) question is,
> what is tap:aio:?  I've been searching but have been unable to find
> anything definitive on what they are.  Is it just a disk image used by Xen,
> or is there something special about it?  How is a tap:aio: disk created,
> etc?

The image itself is basically just a raw disk image. What makes
tap:aio:/ different from file:/ (or manually creating loopback
devices) is that tap:aio is supposed to be more reliable and have
better performance, not effected by dom0 caching effect, thus reducing
possible data loss.  This is different from (for example) tap:qcow,
which uses its own (not raw) file format. See
http://wiki.xensource.com/xenwiki/blktap for details

-- 
Fajar

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