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RE: [Xen-devel] [PATCH 0/8] Domain Groups: Introduction

To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, "Chris" <hap10@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH 0/8] Domain Groups: Introduction
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Tue, 20 Feb 2007 23:01:55 -0000
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Thread-topic: [Xen-devel] [PATCH 0/8] Domain Groups: Introduction
> On 20/2/07 19:55, "Chris" <hap10@xxxxxxxxxxxxxx> wrote:
> 
> > On the purely practical side, we believe group migration will be an
> > attractive tool allowing system administrators to move groups of
domains
> > between machines.  Live migration is also supported.  For usage we
> > envision, for example, a group of interdependent database, web, and
mail
> > servers, where migrating these domains as a group has obvious
> > operational advantages.  Also, for hosting service providers, it
seems
> > useful to group domains belonging to a specific customer.
> 
> I think we need to decide whether the benefits of supporting this
concept
> down to the hypervisor make it worth adding significant extra
management
> code at ring 0.

It's certainly useful to be able to pause groups of domains e.g. when
debugging cluster filesystems etc. I think there were even patches for
this floating around some time back.

Ian

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