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Re: [Qemu-devel] KVM call agenda for Tuesday, June 19th

From: Takuya Yoshikawa
Subject: Re: [Qemu-devel] KVM call agenda for Tuesday, June 19th
Date: Tue, 19 Jun 2012 23:34:42 +0900

On Tue, 19 Jun 2012 09:01:36 -0500
Anthony Liguori <address@hidden> wrote:

> I'm not at all convinced that postcopy is a good idea.  There needs a clear 
> expression of what the value proposition is that's backed by benchmarks.  
> Those 
> benchmarks need to include latency measurements of downtime which so far, 
> I've 
> not seen.
> I don't want to take any postcopy patches until this discussion happens.


I rather see postcopy as a way of migrating guests forcibly and I know
a service in which such a way is needed: emergency migration.  There is
also a product which does live migration when some hardware problems are
detected (as a semi-FT solution) -- in such cases, we cannot wait until
the guest becomes calm.

Although I am not certain whether QEMU can be used for such products,
it may be worth thinking about.


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