From: Jes Sorensen <Jes.Sorensen@redhat.com>
To: Anthony Liguori <aliguori@linux.vnet.ibm.com>
Cc: agl@linux.vnet.ibm.com, stefanha@linux.vnet.ibm.com,
markus_mueller@de.ibm.com, marcel.mittelstaedt@de.ibm.com,
Michael Roth <mdroth@linux.vnet.ibm.com>,
qemu-devel@nongnu.org, ryanh@us.ibm.com, abeekhof@redhat.com,
Luiz Capitulino <lcapitulino@redhat.com>
Subject: Re: [Qemu-devel] [RFC][PATCH v6 00/23] virtagent: host/guest RPC communication agent
Date: Mon, 21 Feb 2011 09:32:31 +0100 [thread overview]
Message-ID: <4D62231F.9020901@redhat.com> (raw)
In-Reply-To: <4D5E88BD.3050006@linux.vnet.ibm.com>
On 02/18/11 15:57, Anthony Liguori wrote:
> On 02/18/2011 08:30 AM, Jes Sorensen wrote:
>> However if there's an agent connection, it could be arranged in a way
>> allowing the host to reconnect to the guest agent. In that way it really
>> shouldn't be a big deal as long as our agent commands aren't too complex.
>
> Oh, but they'll be nice and complex :-) What happens if you do a live
> migration in the middle of doing a live backup? You'll end up with the
> guest waiting to be told that it's okay to unfreeze itself only to never
> be told.
Well that isn't really different from the current setup - if QEMU
migrates, the admin tool has to connect to the new QEMU process and
issue the fsthaw command there instead.
> Terminating in QEMU means we can do intelligent things like delay live
> migration convergence, save state, etc.
We could easily add a flag for this in QEMU itself, so I don't see it
being a big issue.
Jes
next prev parent reply other threads:[~2011-02-21 8:32 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-17 13:14 [Qemu-devel] [RFC][PATCH v6 00/23] virtagent: host/guest RPC communication agent Michael Roth
2011-01-17 13:14 ` [Qemu-devel] [RFC][PATCH v6 01/23] Move code related to fd handlers into utility functions Michael Roth
2011-01-17 13:56 ` Gerd Hoffmann
2011-01-17 13:14 ` [Qemu-devel] [RFC][PATCH v6 02/23] Add qemu_set_fd_handler() wrappers to qemu-tools.c Michael Roth
2011-01-17 13:14 ` [Qemu-devel] [RFC][PATCH v6 03/23] Make qemu timers available for tools Michael Roth
2011-01-21 16:30 ` [Qemu-devel] " Jes Sorensen
2011-01-21 17:26 ` Michael Roth
2011-01-24 7:56 ` Jes Sorensen
2011-01-17 13:14 ` [Qemu-devel] [RFC][PATCH v6 04/23] virtagent: common code for managing client/server rpc jobs Michael Roth
2011-01-17 13:14 ` [Qemu-devel] [RFC][PATCH v6 05/23] virtagent: transport definitions read/send callback functions Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 06/23] virtagent: base client definitions Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 07/23] virtagent: base server definitions Michael Roth
2011-01-21 16:38 ` [Qemu-devel] " Jes Sorensen
2011-01-21 17:55 ` Michael Roth
2011-01-24 10:16 ` Jes Sorensen
2011-01-24 16:51 ` Michael Roth
2011-01-24 17:04 ` Jes Sorensen
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 08/23] virtagent: add va.getfile RPC Michael Roth
2011-01-21 16:40 ` [Qemu-devel] " Jes Sorensen
2011-01-21 17:20 ` Daniel P. Berrange
2011-01-21 18:23 ` Michael Roth
2011-01-24 22:08 ` Richard W.M. Jones
2011-01-24 22:20 ` Richard W.M. Jones
2011-01-24 22:26 ` Anthony Liguori
2011-01-24 22:48 ` Richard W.M. Jones
2011-01-24 23:40 ` Anthony Liguori
2011-01-25 0:22 ` Michael Roth
2011-01-25 0:25 ` Anthony Liguori
2011-01-25 9:21 ` Richard W.M. Jones
2011-01-25 15:12 ` Anthony Liguori
2011-01-25 15:43 ` Richard W.M. Jones
2011-01-26 13:01 ` Richard W.M. Jones
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 09/23] virtagent: add agent_viewfile qmp/hmp command Michael Roth
2011-01-21 16:41 ` [Qemu-devel] " Jes Sorensen
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 10/23] virtagent: add va.getdmesg RPC Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 11/23] virtagent: add agent_viewdmesg qmp/hmp commands Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 12/23] virtagent: add va.shutdown RPC Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 13/23] virtagent: add agent_shutdown qmp/hmp commands Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 14/23] virtagent: add va.ping RPC Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 15/23] virtagent: add agent_ping qmp/hmp commands Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 16/23] virtagent: add agent_capabilities " Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 17/23] virtagent: add client capabilities init function Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 18/23] virtagent: add va.hello RPC Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 19/23] virtagent: add "hello" notification function for guest agent Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 20/23] virtagent: add va.capabilities RPC Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 21/23] virtagent: add virtagent guest daemon Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 22/23] virtagent: integrate virtagent server/client via chardev Michael Roth
2011-01-17 13:15 ` [Qemu-devel] [RFC][PATCH v6 23/23] virtagent: various bits to build QEMU with virtagent Michael Roth
2011-01-24 10:24 ` [Qemu-devel] " Jes Sorensen
2011-01-17 13:53 ` [Qemu-devel] [RFC][PATCH v6 00/23] virtagent: host/guest RPC communication agent Gerd Hoffmann
2011-01-17 14:53 ` Michael Roth
2011-01-18 14:02 ` Gerd Hoffmann
2011-01-18 14:13 ` Anthony Liguori
2011-01-31 14:41 ` Michael Roth
2011-02-01 22:18 ` Michael Roth
2011-02-14 9:49 ` Gerd Hoffmann
2011-02-16 16:04 ` Jes Sorensen
2011-02-16 17:22 ` Michael Roth
2011-02-17 8:26 ` Jes Sorensen
2011-02-17 9:08 ` Dor Laor
2011-02-17 14:39 ` Michael Roth
2011-02-18 12:45 ` Jes Sorensen
2011-02-18 14:07 ` Anthony Liguori
2011-02-18 14:30 ` Jes Sorensen
2011-02-18 14:57 ` Anthony Liguori
2011-02-21 8:32 ` Jes Sorensen [this message]
2011-02-21 13:36 ` Michael Roth
2011-02-21 13:38 ` Jes Sorensen
2011-02-18 15:22 ` Gerd Hoffmann
2011-02-18 15:25 ` Anthony Liguori
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