[libvirt] [Xen-devel] Re: [PATCH V2] Add libxenlight driver
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Paolo Bonzini writes ("[Xen-devel] Re: [PATCH V2] Add libxenlight driver"):
On 02/23/2011 03:56 AM, Jim Fehlig wrote:
> Add a new xen driver based on libxenlight [1], which is the primary
> toolstack starting with Xen 4.1.0. The driver is stateful, runs
> privileged only, and is accessed with libxl:/// URI.
Why not let the user keep xen:/// ?
Because for now you want to be able to have both drivers. Unless,
perhaps, it's somehow possible to select between them at runtime for
the same URI scheme ?
Ian.
On 02/23/2011 06:18 PM, Ian Jackson wrote:
Because for now you want to be able to have both drivers. Unless,
perhaps, it's somehow possible to select between them at runtime for
the same URI scheme ?
The Xen driver is already using a multitude of "subdrivers" (query
xenstore, query the hypervisor, query xend, read directly from /etc/xen
or /var/lib/xend/domains).
Right now xend access is mandatory when running from dom0, but that can
change to require either xend or libxl (the question is, what to
privilege if both are available?).
Paolo
On Thu, Feb 24, 2011 at 01:19:53PM +0100, Paolo Bonzini wrote:
On 02/23/2011 06:18 PM, Ian Jackson wrote:
>Because for now you want to be able to have both drivers. Unless,
>perhaps, it's somehow possible to select between them at runtime for
>the same URI scheme ?
The Xen driver is already using a multitude of "subdrivers" (query
xenstore, query the hypervisor, query xend, read directly from
/etc/xen or /var/lib/xend/domains).
This is one of the primary reasons why we want the new driver
to be completely separate. We want a clean break with the past
so we can have a simple & easy to maintain standalone driver
for xenlight.
Regards,
Daniel
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Paolo Bonzini