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Re: [Qemu-devel] KVM call agenda for October 11th


From: Anthony Liguori
Subject: Re: [Qemu-devel] KVM call agenda for October 11th
Date: Tue, 11 Oct 2011 08:57:09 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.21) Gecko/20110831 Lightning/1.0b2 Thunderbird/3.1.13

On 10/11/2011 08:47 AM, Avi Kivity wrote:
On 10/11/2011 03:27 PM, Anthony Liguori wrote:
5) Implement subsections through the wire as top-level sections (as
originally intended).  Keep existing subsections with (1).


That was (3).


Yes, sorry.

btw, it's reasonable to require that backwards migration is only to a
fully updated stable release, so we can do 5) too, or backport 1).

But given the choice of a nasty silent failure to an
not-quite-up-to-date stable release or failing migration to a fully
up-to-date stable release, I think it's better that we err on the side
of caution.

We're erring on the side of no migration, it seems.

Not being able to migrate because of a recoverable failure is
annoying.  Having a silent failure that possible results in corruption
is unacceptable.

What I'm trying to avoid is making choices today that close the door on
better fixes in the future.

I think Juan made a really good point in his earlier post. We need to focus on better testing for migration. With a solid migration torture test, we can probably eliminate much of the problems we're facing today.

Regards,

Anthony Liguori






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