From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: [PATCH] xenctld - a control channel multiplexing daemon Date: Wed, 26 Jan 2005 16:57:35 -0600 Message-ID: <1106780255.7268.9.camel@localhost> References: <1106322956.17263.26.camel@localhost> <1106698862.19729.40.camel@dyn318051bld.beaverton.ibm.com> <1106767902.25573.7.camel@localhost> <1106769687.25575.21.camel@localhost> <1106776160.19729.66.camel@dyn318051bld.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit In-Reply-To: <1106776160.19729.66.camel@dyn318051bld.beaverton.ibm.com> Sender: xen-devel-admin@lists.sourceforge.net Errors-To: xen-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Michael Hohnbaum Cc: andrew.warfield@cl.cam.ac.uk, xen-devel@lists.sourceforge.net, Keir Fraser List-Id: xen-devel@lists.xenproject.org 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@us.ibm.com Phone: (512) 838-1208 ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl