Re: [Xen-devel] [PATCH] xenctld - a control channel multiplexing daemon

[Anthony Liguori <aliguori@xxxxxxxxxx>]

On Wed, 2005-01-26 at 15:49, Michael Hohnbaum wrote:

> While beyond the current focus, persistent store could feasibly
> be used to hold domain definitions for non-existent domains and 
> suspended domains.  One could envision adding a state field into
> the domain configuration/definition.  Valid states for current 
> capabilities would be {active, suspended, migrated, inactive}.  On

Yes, but the problem that occurs is uniquely identifying a domain.  In
other words, what's the key used within the persistent store?

If it's domain id (which is what I assume it's going to be), you cannot
tag it as having an "inactive" state because there's nothing that
prevents a domain from being created with the same domain id.

Also, if you try to assign domains UUIDs or something, what do you do
for cloning/checkpointing?  Do you assign a new UUID on a clone but not
on a checkpoint?  Does assigning new UUIDs propagate to things like MAC
addresses or other things that are supposed to be unique?

There's a lot to be thought about.  I think punting the problem (as Andy
suggests) is the right approach for now.

Regards,

-- 
Anthony Liguori
Linux Technology Center (LTC) - IBM Austin
E-mail: aliguori@xxxxxxxxxx
Phone: (512) 838-1208




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