From: Anthony Liguori <anthony@codemonkey.ws>
To: Avi Kivity <avi@redhat.com>
Cc: Blue Swirl <blauwirbel@gmail.com>,
Stefan Hajnoczi <stefanha@gmail.com>,
"Shribman, Aidan" <aidan.shribman@sap.com>,
qemu-devel Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH v4] XBZRLE delta for live migration of large memory apps
Date: Wed, 10 Aug 2011 11:23:24 -0500 [thread overview]
Message-ID: <4E42B07C.2090805@codemonkey.ws> (raw)
In-Reply-To: <4E42ACF9.3040101@redhat.com>
On 08/10/2011 11:08 AM, Avi Kivity wrote:
> On 08/10/2011 06:58 PM, Anthony Liguori wrote:
>>> I don't think we should couple the two features together.
>>
>>
>> ASN.1 is orthogonal to capabilities.
>>
>> Capabilities are a hard requirement before merging any new type of
>> compression algorithm IMO.
>
> Right now we have capabilties in the form of -help output.
>
> If -help says
>
> -no-xzbrle disable xzbrle support
>
> (or -migration-compression xzbrle=off, or something) that's sufficient
> for management tools.
This is static, not dynamic. You may attempt to migrate to another host
that supports it and then migrate to a second host that doesn't support
it after the first migration fails.
>
> We shouldn't block this feature just because some monitor facility is
> not yet implemented.
We shouldn't make *any* changes to the migration protocol before we have
a feature negotiation capability. I only want to do a hard break of the
protocol once.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2011-08-10 16:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-08 8:42 [Qemu-devel] [PATCH v4] XBZRLE delta for live migration of large memory apps Shribman, Aidan
2011-08-08 13:29 ` Anthony Liguori
2011-08-08 13:41 ` Alexander Graf
2011-08-08 13:46 ` Anthony Liguori
2011-08-08 13:49 ` Avi Kivity
2011-08-08 13:51 ` Avi Kivity
2011-08-08 14:15 ` Anthony Liguori
2011-08-08 14:23 ` Avi Kivity
2011-08-08 14:33 ` Anthony Liguori
2011-08-08 14:39 ` Avi Kivity
2011-08-08 15:08 ` Anthony Liguori
2011-08-08 14:04 ` [Qemu-devel] [libvirt] " Daniel P. Berrange
2011-08-08 14:42 ` Avi Kivity
2011-08-08 14:46 ` [Qemu-devel] " Avi Kivity
2011-08-08 14:47 ` Avi Kivity
2011-08-08 14:56 ` Stefan Hajnoczi
2011-08-08 15:01 ` Avi Kivity
2011-08-08 15:10 ` Anthony Liguori
2011-08-08 15:15 ` Avi Kivity
2011-08-08 16:19 ` Anthony Liguori
2011-08-08 16:53 ` Avi Kivity
2011-08-08 16:55 ` Anthony Liguori
2011-08-10 15:07 ` Shribman, Aidan
2011-08-10 15:12 ` Avi Kivity
2011-08-10 15:58 ` Anthony Liguori
2011-08-10 16:08 ` Avi Kivity
2011-08-10 16:23 ` Anthony Liguori [this message]
2011-08-10 16:40 ` Avi Kivity
2011-08-10 19:27 ` Anthony Liguori
2011-08-11 8:03 ` Shribman, Aidan
2011-08-11 13:00 ` Anthony Liguori
2011-08-11 8:17 ` Avi Kivity
2011-08-11 9:16 ` [Qemu-devel] [libvirt] " Daniel P. Berrange
2011-08-11 9:20 ` Avi Kivity
2011-08-11 13:03 ` [Qemu-devel] " Anthony Liguori
2011-08-11 9:24 ` [Qemu-devel] [libvirt] " Daniel P. Berrange
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