Re: [libvirt] [Qemu-devel] [PATCH v4] XBZRLE delta for live migration of large memory apps
On 08/11/2011 12:16 PM, Daniel P. Berrange wrote:
On Thu, Aug 11, 2011 at 11:17:09AM +0300, Avi Kivity wrote:
> On 08/10/2011 10:27 PM, Anthony Liguori wrote:
> >>This may be acceptable, wait until the entire migration cluster is
> >>xzbrle capable before enabling it. If not, add a monitor command.
> >
> >
> >1) xzbrle needs to be disabled by default. That way management
> >tools don't unknowingly enable it by not passing -no-xzbrle.
>
> We could hook it to -M, though it's a bit gross.
That would needlessly prevent its use for any existing installed
guests with a older machine type, which are running in a new QEMU
You could still enable it explicitly; I'm just trying to get it to be
enabled by default.
Some kind of monitor capabilities seems good to me.
Live migration is probably mostly done in managed environments, so I
think you're right.
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