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Re: [Xen-devel] Re: [RFC] [PATCH] sysfs support for Xen attributes

To: Dave Hansen <haveblue@xxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [RFC] [PATCH] sysfs support for Xen attributes
From: "Mike D. Day" <ncmike@xxxxxxxxxx>
Date: Thu, 12 Jan 2006 09:52:02 -0500
Cc: Greg KH <greg@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, lkml <linux-kernel@xxxxxxxxxxxxxxx>
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Dave Hansen wrote:
On Wed, 2006-01-11 at 20:49 -0500, Mike D. Day wrote:

There are definitely things that are exceedingly helpful.  However,
there are at least two other hypervisor-ish things that I can think of
which do the exact same kinds of things.  Perhaps it would be helpful to
collaborate with them and produce a common interface. (uml, s390, maybe
some of the powerpc hypervisors)

yes, that is a good idea.

Can the domain be migrated to another physical host?
What scheduler is Xen using (xen has plug-in schedulers)? All the actual information resides within the xen hypervisor, not the linux kernel.

Other than debugging and curiosity, why are these things needed?

Debugging is always a good reason :) but I'm specifically thinking of systems management tools, deployment of virtual machines, and migration. All of these attributes are important for tools that manage, deploy, or migrate.




Mike D. Day
STSM and Architect, Open Virtualization
IBM Linux Technology Center

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