From: Avi Kivity <avi@qumranet.com>
To: qemu-devel@nongnu.org
Cc: Chris Wright <chrisw@redhat.com>,
Uri Lublin <uri.lublin@qumranet.com>,
Anthony Liguori <aliguori@us.ibm.com>,
kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [PATCH 2/10] Allow the monitor to be suspended during non-blocking op
Date: Wed, 10 Sep 2008 09:52:33 +0300 [thread overview]
Message-ID: <48C76EB1.6040906@qumranet.com> (raw)
In-Reply-To: <1220989802-13706-3-git-send-email-aliguori@us.ibm.com>
Anthony Liguori wrote:
> Live migration happens in the background, but it is useful to make the monitor
> command appear as if it's blocking. This allows a management tool to
> immediately know when the live migration has completed without having to poll
> the migration status.
>
> This patch allows the monitor to be suspended from a monitor callback which
> will prevent new monitor commands from being executed.
>
>
This means that migration is no longer transparent. While migration is
going on, you can't change the cdrom media, look at cpu registers, or do
anything that requires the monitor.
This both reduces the functionality and complicates management
applications. IMO migration should have asynchronous notification (and
no, I don't think multiple monitors is the correct solution).
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2008-09-10 6:52 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-09 19:49 [Qemu-devel] [PATCH 0/10] Live migration for QEMU Anthony Liguori
2008-09-09 19:49 ` [Qemu-devel] [PATCH 1/10] Refactor QEMUFile for live migration Anthony Liguori
2008-09-10 13:25 ` Chris Lalancette
2008-09-10 14:38 ` [Qemu-devel] " Glauber Costa
2008-09-10 15:05 ` Avi Kivity
2008-09-10 15:16 ` Anthony Liguori
2008-09-12 15:40 ` [Qemu-devel] " Blue Swirl
2008-09-09 19:49 ` [Qemu-devel] [PATCH 2/10] Allow the monitor to be suspended during non-blocking op Anthony Liguori
2008-09-10 6:52 ` Avi Kivity [this message]
2008-09-10 10:05 ` Daniel P. Berrange
2008-09-10 11:11 ` Avi Kivity
2008-09-10 11:14 ` Daniel P. Berrange
2008-09-10 15:36 ` Avi Kivity
2008-09-10 15:40 ` Anthony Liguori
2008-09-10 15:58 ` Jamie Lokier
2008-09-11 10:16 ` Avi Kivity
2008-09-11 11:59 ` Jamie Lokier
2008-09-10 13:07 ` Anthony Liguori
2008-09-10 13:26 ` Chris Lalancette
2008-09-10 10:01 ` Daniel P. Berrange
2008-09-10 13:11 ` Anthony Liguori
2008-09-09 19:49 ` [Qemu-devel] [PATCH 3/10] Add bdrv_flush_all() Anthony Liguori
2008-09-10 13:26 ` Chris Lalancette
2008-09-10 14:46 ` Glauber Costa
2008-09-10 15:19 ` Anthony Liguori
2008-09-10 15:32 ` Glauber Costa
2008-09-10 15:39 ` Avi Kivity
2008-09-10 16:37 ` Paul Brook
2008-09-12 15:43 ` Blue Swirl
2008-09-09 19:49 ` [Qemu-devel] [PATCH 4/10] Add dirty tracking for live migration Anthony Liguori
2008-09-10 14:52 ` Glauber Costa
2008-09-10 14:56 ` Anthony Liguori
2008-09-10 15:01 ` Glauber Costa
2008-09-09 19:49 ` [Qemu-devel] [PATCH 5/10] Add network announce function Anthony Liguori
2008-09-10 13:27 ` Chris Lalancette
2008-09-10 13:54 ` Anthony Liguori
2008-09-10 14:00 ` Avi Kivity
2008-09-09 19:49 ` [Qemu-devel] [PATCH 6/10] Introduce v3 of savevm protocol Anthony Liguori
2008-09-10 7:09 ` Avi Kivity
2008-09-09 19:49 ` [Qemu-devel] [PATCH 7/10] Switch the memory savevm handler to be "live" Anthony Liguori
2008-09-09 22:25 ` Jamie Lokier
2008-09-09 22:49 ` Anthony Liguori
2008-09-10 7:17 ` Avi Kivity
2008-09-10 13:10 ` Anthony Liguori
2008-09-09 19:50 ` [Qemu-devel] [PATCH 8/10] Introduce a buffered QEMUFile wrapper Anthony Liguori
2008-09-12 15:16 ` Blue Swirl
2008-09-09 19:50 ` [Qemu-devel] [PATCH 9/10] Introduce the UI components for live migration Anthony Liguori
2008-09-09 19:50 ` [Qemu-devel] [PATCH 10/10] TCP based " Anthony Liguori
2008-09-10 16:46 ` Blue Swirl
2008-09-10 16:51 ` Anthony Liguori
2008-09-11 12:13 ` [Qemu-devel] [PATCH 0/10] Live migration for QEMU Atsushi SAKAI
2008-09-11 13:06 ` Anthony Liguori
2008-09-11 13:30 ` Jamie Lokier
2008-09-11 14:12 ` Anthony Liguori
2008-09-11 15:32 ` Avi Kivity
2008-09-11 16:22 ` Anthony Liguori
2008-09-11 16:32 ` Avi Kivity
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