From: Anthony Liguori <anthony@codemonkey.ws>
To: "Daniel P. Berrange" <berrange@redhat.com>
Cc: xen-devel@lists.xensource.com, Gerd Hoffmann <kraxel@redhat.com>,
qemu-devel@nongnu.org
Subject: Re: [Xen-devel] Re: [Qemu-devel] [PATCH 12/13] set vnc password from xenstore.
Date: Thu, 21 Aug 2008 17:36:36 -0500 [thread overview]
Message-ID: <48ADEDF4.40405@codemonkey.ws> (raw)
In-Reply-To: <20080821214806.GJ1531@redhat.com>
Daniel P. Berrange wrote:
> On Thu, Aug 21, 2008 at 11:34:41PM +0200, Gerd Hoffmann wrote:
>
>> Hi,
>>
>> Multiple monitor instances would be very useful anyway.
>>
>> Right now there is no way to use the monitor for libvirt-managed qemu
>> instances because libvirt uses the monitor. Being able to both use
>> libvirt *and* have a monitor prompt to type commands would be great.
>>
>
> I disagree - that means you'll no longer be able to trust what libvirt
> tells you about the VM, and libvirt won't have a guarenteed consistent
> view of the VM's state because things will be changed behind its back.
>
A nice side effect of having multiple monitors is that you can implement
a proper 'select' command. This command would block and tell you about
asynchronous events (like guest CD-ROM ejecting). You could use this
mechanism to notify libvirt when things changed because of other
monitors too.
It's more work though from a libvirt perspective and you probably don't
want users screwing around in the monitor anyway.
Regards,
Anthony Liguori
> Daniel
>
next prev parent reply other threads:[~2008-08-21 22:37 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-21 16:27 [Qemu-devel] [PATCH 00/13] merge some xen bits into qemu Gerd Hoffmann
2008-08-21 16:27 ` [Qemu-devel] [PATCH 01/13] Handle terminating signals Gerd Hoffmann
2008-08-21 20:11 ` Anthony Liguori
[not found] ` <m2n.s.1KWGbo-001Nr9@chiark.greenend.org.uk>
2008-08-26 10:44 ` Ian Jackson
2008-08-26 12:16 ` Gerd Hoffmann
2008-08-26 12:36 ` Ian Jackson
2008-08-26 12:58 ` Gerd Hoffmann
2008-08-26 17:55 ` Jamie Lokier
2008-08-26 13:17 ` Anthony Liguori
2008-08-26 13:38 ` [Xen-devel] " Ian Jackson
2008-08-26 14:52 ` Avi Kivity
2008-08-26 17:49 ` Jamie Lokier
2008-08-26 15:04 ` Anthony Liguori
2008-08-26 15:08 ` Ian Jackson
2008-08-26 15:20 ` Anthony Liguori
2008-08-26 15:28 ` Ian Jackson
2008-08-26 15:36 ` Anthony Liguori
2008-08-26 17:47 ` Jamie Lokier
2008-08-26 18:03 ` Jamie Lokier
2008-08-26 18:50 ` Anthony Liguori
2008-08-27 9:46 ` Ian Jackson
2008-08-27 16:27 ` Jamie Lokier
2008-08-27 16:35 ` Ian Jackson
2008-08-27 17:55 ` Anthony Liguori
2008-08-27 18:41 ` Jamie Lokier
2008-08-28 9:34 ` Ian Jackson
2008-09-07 2:41 ` Anthony Liguori
2008-08-26 15:36 ` Samuel Thibault
2008-08-26 15:21 ` Anthony Liguori
[not found] ` <m2n.s.1KXzwZ-002RA9@chiark.greenend.org.uk>
2008-08-26 15:23 ` Ian Jackson
2008-08-26 15:29 ` Avi Kivity
[not found] ` <m2n.s.1KY0XT-002RJM@chiark.greenend.org.uk>
2008-08-26 15:38 ` Ian Jackson
2008-08-26 16:12 ` Avi Kivity
2008-08-26 16:14 ` Julian Seward
2008-08-26 16:39 ` Anthony Liguori
2008-08-27 8:05 ` Avi Kivity
2008-08-27 8:49 ` Alan Cox
2008-08-27 9:10 ` Avi Kivity
2008-08-27 9:16 ` Keir Fraser
2008-08-27 9:12 ` Gleb Natapov
[not found] ` <m2n.s.1KXz4u-002Qvq@chiark.greenend.org.uk>
2008-08-26 14:55 ` Ian Jackson
2008-08-21 16:27 ` [Qemu-devel] [PATCH 02/13] add DisplayState->idle Gerd Hoffmann
2008-08-21 16:33 ` [Qemu-devel] " Samuel Thibault
2008-08-21 20:12 ` [Qemu-devel] " Anthony Liguori
2008-08-21 16:27 ` [Qemu-devel] [PATCH 03/13] add container_of() macro to osdep.h Gerd Hoffmann
2008-08-21 20:12 ` Anthony Liguori
2008-08-21 16:27 ` [Qemu-devel] [PATCH 04/13] move GUI_REFRESH_INTERVAL define from vl.c to console.h Gerd Hoffmann
2008-08-21 20:12 ` Anthony Liguori
2008-08-21 16:27 ` [Qemu-devel] [PATCH 05/13] xen: groundwork for xen support Gerd Hoffmann
2008-08-21 20:18 ` Anthony Liguori
2008-08-21 16:27 ` [Qemu-devel] [PATCH 06/13] xen: backend driver core Gerd Hoffmann
2008-08-21 16:27 ` [Qemu-devel] [PATCH 07/13] xen: add console backend driver Gerd Hoffmann
2008-08-21 16:27 ` [Qemu-devel] [PATCH 08/13] xen: add framebuffer " Gerd Hoffmann
2008-08-21 16:27 ` [Qemu-devel] [PATCH 09/13] xen: add block device " Gerd Hoffmann
2008-08-21 16:27 ` [Qemu-devel] [PATCH 10/13] xen: add net " Gerd Hoffmann
2008-08-21 16:27 ` [Qemu-devel] [PATCH 11/13] xen: blk & nic configuration via cmd line Gerd Hoffmann
2008-08-21 16:27 ` [Qemu-devel] [PATCH 12/13] set vnc password from xenstore Gerd Hoffmann
2008-08-21 20:14 ` Anthony Liguori
2008-08-21 20:19 ` [Xen-devel] " Daniel P. Berrange
2008-08-21 20:22 ` Anthony Liguori
2008-08-21 20:26 ` Daniel P. Berrange
2008-08-21 21:34 ` Gerd Hoffmann
2008-08-21 21:48 ` Daniel P. Berrange
2008-08-21 22:36 ` Anthony Liguori [this message]
2008-08-24 9:03 ` Avi Kivity
2008-08-22 7:04 ` Gerd Hoffmann
2008-08-22 19:11 ` Jamie Lokier
2008-08-22 19:01 ` Jamie Lokier
2008-08-21 22:34 ` Anthony Liguori
2008-08-22 8:27 ` Gerd Hoffmann
2008-08-24 8:57 ` Avi Kivity
2008-08-24 9:59 ` Jamie Lokier
2008-08-24 10:07 ` Avi Kivity
2008-08-24 12:48 ` Jamie Lokier
2008-08-21 20:59 ` Jamie Lokier
2008-08-21 21:29 ` Gerd Hoffmann
2008-08-26 10:13 ` Ian Jackson
2008-08-21 20:17 ` [Qemu-devel] Re: [Xen-devel] " Daniel P. Berrange
2008-08-21 21:25 ` Gerd Hoffmann
[not found] ` <m2n.s.1KWHfl-001Ntw@chiark.greenend.org.uk>
2008-08-26 10:47 ` Ian Jackson
2008-08-21 16:27 ` [Qemu-devel] [PATCH 13/13] xen: pv domain builder Gerd Hoffmann
[not found] ` <m2n.s.1KWDD7-002TB9@chiark.greenend.org.uk>
2008-08-26 10:31 ` [Qemu-devel] [PATCH 05/13] xen: groundwork for xen support Ian Jackson
2008-08-26 12:34 ` Gerd Hoffmann
2008-08-26 12:57 ` [Xen-devel] " Daniel P. Berrange
2008-08-26 13:20 ` Gerd Hoffmann
2008-08-26 13:23 ` Daniel P. Berrange
2008-08-26 13:33 ` Ian Jackson
2008-08-26 14:14 ` Daniel P. Berrange
2008-08-26 14:31 ` Gerd Hoffmann
2008-08-26 14:40 ` Daniel P. Berrange
2008-08-26 14:49 ` Gerd Hoffmann
2008-08-26 14:53 ` Daniel P. Berrange
2008-08-26 19:24 ` Gerd Hoffmann
2008-08-26 14:53 ` Ian Jackson
2008-08-27 8:51 ` Gerd Hoffmann
2008-08-27 9:53 ` Ian Jackson
2008-08-27 9:56 ` Daniel P. Berrange
2008-08-27 10:00 ` Ian Jackson
2008-08-27 10:23 ` Daniel P. Berrange
2008-08-27 10:37 ` Gerd Hoffmann
2008-08-27 10:44 ` Daniel P. Berrange
2008-08-27 11:01 ` Gerd Hoffmann
[not found] ` <m2n.s.1KXzR5-002R2A@chiark.greenend.org.uk>
2008-08-26 15:05 ` Ian Jackson
2008-08-26 15:09 ` Daniel P. Berrange
2008-08-26 13:24 ` Ian Jackson
2008-08-26 13:50 ` Daniel P. Berrange
[not found] ` <m2n.s.1KWDfC-002TCd@chiark.greenend.org.uk>
[not found] ` <m2n.s.1KWDGv-002TBJ@chiark.greenend.org.uk>
[not found] ` <m2n.s.1KWDEt-002TBA@chiark.greenend.org.uk>
2008-08-26 10:42 ` [Qemu-devel] [PATCH 13/13] xen: pv domain builder Ian Jackson
2008-08-26 10:50 ` [Xen-devel] " Samuel Thibault
2008-08-26 13:43 ` Ian Jackson
2008-08-26 21:00 ` Markus Armbruster
2008-08-26 12:55 ` Gerd Hoffmann
2008-08-26 13:14 ` Ian Jackson
2008-08-26 13:53 ` Gerd Hoffmann
2008-08-26 14:19 ` Ian Jackson
2008-08-26 20:00 ` [Xen-devel] " Gerd Hoffmann
2008-08-27 9:48 ` Ian Jackson
2008-08-26 13:56 ` Gerd Hoffmann
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