From: Paolo Bonzini <pbonzini@redhat.com>
To: Juan Quintela <quintela@trasno.org>
Cc: qemu-devel@nongnu.org, Paul Brook <paul@codesourcery.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts
Date: Tue, 24 Nov 2009 18:41:11 +0100 [thread overview]
Message-ID: <4B0C1AB7.2070106@redhat.com> (raw)
In-Reply-To: <m3my2ct2qe.fsf@neno.neno>
On 11/24/2009 03:30 PM, Juan Quintela wrote:
> No, new -> old is way, way more difficult.
New->old is way more difficult with the current migration file format.
The current migration file format is not at all designed to be read by
an older version.
Or for that matter a tool that only cares about the state of a couple
devices (this is IMNSHO much more important if it wasn't for the RHEL
case that started the discussion).
Thinking about the latter and using it to solve the former would be the
right way to do it. Some time ago when I had just started at Red Hat I
wrote a mini-library to parse qemu migrate data, and I couldn't believe
that there was no length field anywhere. Luckily I needed only RAM and
CPU data, so I only needed to know about a couple of extraneous chunks.
Paolo
next prev parent reply other threads:[~2009-11-24 17:41 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-22 15:03 [Qemu-devel] Live migration protocol, device features, ABIs and other beasts Dor Laor
2009-11-22 15:49 ` Anthony Liguori
2009-11-22 20:22 ` [Qemu-devel] " Paolo Bonzini
2009-11-23 2:17 ` Anthony Liguori
2009-11-23 8:18 ` Paolo Bonzini
2009-11-23 13:04 ` Anthony Liguori
2009-11-23 8:26 ` Gleb Natapov
2009-11-23 9:29 ` Paolo Bonzini
2009-11-23 9:31 ` Gleb Natapov
[not found] ` <m3einp4e7c.fsf@neno.neno>
2009-11-23 12:37 ` Gleb Natapov
[not found] ` <m3iqd14edf.fsf@neno.neno>
2009-11-23 12:36 ` Gleb Natapov
[not found] ` <m3r5rpwcww.fsf@neno.neno>
2009-11-23 14:32 ` Gleb Natapov
2009-11-23 14:51 ` Anthony Liguori
2009-11-23 14:53 ` Gleb Natapov
2009-11-23 15:05 ` Anthony Liguori
2009-11-23 15:22 ` Gleb Natapov
2009-11-23 15:30 ` Paolo Bonzini
2009-11-23 15:32 ` Anthony Liguori
2009-11-23 15:49 ` Gleb Natapov
2009-11-23 16:09 ` Anthony Liguori
2009-11-23 16:15 ` Gleb Natapov
2009-11-23 16:19 ` Anthony Liguori
[not found] ` <m33a45s009.fsf@neno.neno>
2009-11-23 16:05 ` Gleb Natapov
2009-11-23 16:10 ` Anthony Liguori
2009-11-24 13:28 ` Michael S. Tsirkin
2009-11-23 13:01 ` Anthony Liguori
[not found] ` <m3vdh1wd0n.fsf@neno.neno>
2009-11-23 14:49 ` Anthony Liguori
2009-11-23 15:21 ` Eduardo Habkost
2009-11-23 16:16 ` Anthony Liguori
2009-11-23 17:08 ` Eduardo Habkost
2009-11-23 18:28 ` Anthony Liguori
2009-11-23 19:24 ` Eduardo Habkost
2009-11-23 19:49 ` Anthony Liguori
2009-11-23 21:21 ` Eduardo Habkost
2009-11-24 11:00 ` Dor Laor
[not found] ` <m3y6lxqkpv.fsf@neno.neno>
2009-11-23 16:44 ` Anthony Liguori
[not found] ` <m3zl6db11z.fsf@neno.neno>
2009-11-23 18:44 ` Anthony Liguori
2009-11-23 20:24 ` Eduardo Habkost
2009-11-24 13:39 ` Michael S. Tsirkin
2009-11-23 13:51 ` Eduardo Habkost
2009-11-23 14:21 ` Paolo Bonzini
2009-11-23 15:00 ` Anthony Liguori
2009-11-23 15:37 ` Eduardo Habkost
2009-11-23 15:02 ` Eduardo Habkost
2009-11-23 15:12 ` Anthony Liguori
2009-11-24 14:26 ` [Qemu-devel] " Michael S. Tsirkin
2009-11-23 14:53 ` [Qemu-devel] " Anthony Liguori
2009-11-24 14:28 ` [Qemu-devel] " Michael S. Tsirkin
2009-11-24 14:33 ` [Qemu-devel] " Anthony Liguori
2009-11-24 16:05 ` Michael S. Tsirkin
[not found] ` <m3skc2r66t.fsf@neno.neno>
2009-11-25 16:28 ` Michael S. Tsirkin
2009-11-24 13:17 ` [Qemu-devel] " Michael S. Tsirkin
2009-11-24 13:35 ` Paul Brook
2009-11-24 13:49 ` [Qemu-devel] " Michael S. Tsirkin
2009-11-24 13:59 ` [Qemu-devel] " Paul Brook
2009-11-24 14:21 ` Michael S. Tsirkin
2009-11-24 17:06 ` Blue Swirl
2009-11-24 17:08 ` Michael S. Tsirkin
2009-11-24 17:43 ` Paolo Bonzini
2009-11-24 18:51 ` Anthony Liguori
2009-11-24 18:56 ` Blue Swirl
2009-11-24 19:24 ` Anthony Liguori
2009-11-24 18:57 ` Paolo Bonzini
2009-11-24 19:29 ` Anthony Liguori
2009-11-24 20:01 ` Michael S. Tsirkin
[not found] ` <m3my2ct2qe.fsf@neno.neno>
2009-11-24 17:41 ` Paolo Bonzini [this message]
2009-11-24 13:21 ` Michael S. Tsirkin
2009-11-24 13:45 ` Anthony Liguori
2009-11-24 13:55 ` Michael S. Tsirkin
2009-11-23 12:15 ` Juan Quintela
2009-11-23 13:09 ` Anthony Liguori
2009-11-23 14:13 ` Juan Quintela
2009-11-24 14:05 ` Michael S. Tsirkin
2009-11-24 14:20 ` Juan Quintela
2009-11-24 14:35 ` Michael S. Tsirkin
2009-11-25 13:42 ` Gerd Hoffmann
2009-11-25 13:42 ` Michael S. Tsirkin
2009-11-25 14:10 ` Gerd Hoffmann
2009-11-25 14:09 ` Michael S. Tsirkin
2009-11-25 14:52 ` Gerd Hoffmann
2009-11-26 18:03 ` Andrea Arcangeli
2009-11-25 13:36 ` Gerd Hoffmann
2009-11-25 13:40 ` Michael S. Tsirkin
2009-11-25 13:59 ` Gerd Hoffmann
2009-11-25 14:03 ` Michael S. Tsirkin
2009-11-25 14:53 ` Juan Quintela
2009-11-25 15:01 ` Michael S. Tsirkin
2009-11-24 10:39 ` Dor Laor
2009-11-24 14:01 ` Michael S. Tsirkin
2009-11-24 14:21 ` Juan Quintela
2009-11-24 14:38 ` Michael S. Tsirkin
2009-11-24 16:05 ` Michael S. Tsirkin
2009-11-25 9:30 ` Juan Quintela
2009-11-25 9:32 ` Michael S. Tsirkin
2009-11-25 13:36 ` Juan Quintela
2009-11-24 13:59 ` Michael S. Tsirkin
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