From: Paolo Bonzini <pbonzini@redhat.com>
To: Hu Tao <hutao@cn.fujitsu.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH for-1.6 1/2] don't create pvpanic device by default.
Date: Fri, 02 Aug 2013 10:27:31 +0200 [thread overview]
Message-ID: <51FB6D73.9090902@redhat.com> (raw)
In-Reply-To: <1375427079-16822-1-git-send-email-hutao@cn.fujitsu.com>
On 08/02/2013 09:04 AM, Hu Tao wrote:
> The problem with pvpanic being an internal device is that VMs running
> operating systems without a driver for this device will have problems
> when qemu will be upgraded (from qemu without this pvpanic).
>
> The outcome may be, for example: in Windows(let's say XP) the Device
> manager will open a "new device" wizard and the device will appear as
> an unrecognized device. On a cluster with hundreds of such VMs, If
> that cluster has a health monitoring service it may show all the VMs
> in a "not healthy" state.
>
> Reported-by: Marcel Apfelbaum <marcel.a@redhat.com>
> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
NACK,
this is premature. It is fundamentally a firmware problem.
We have time to apply an even smaller patch that doesn't set has_pvpanic
to true, and delay the whole feature to 1.7, if we do not fix the
firmware in the next two weeks.
Paolo
next prev parent reply other threads:[~2013-08-02 8:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-01 13:08 [Qemu-devel] pvpanic device should not be automatically included as an internal device Marcel Apfelbaum
2013-08-01 13:32 ` Michael S. Tsirkin
2013-08-01 16:39 ` Marcel Apfelbaum
2013-08-01 14:18 ` Gerd Hoffmann
2013-08-01 16:26 ` Eric Blake
2013-08-01 16:31 ` Michael S. Tsirkin
2013-08-01 16:41 ` Marcel Apfelbaum
2013-08-01 22:23 ` Paolo Bonzini
2013-08-01 22:42 ` Eric Blake
2013-08-02 8:31 ` Paolo Bonzini
2013-08-02 9:24 ` Daniel P. Berrange
2013-08-02 7:04 ` [Qemu-devel] [PATCH for-1.6 1/2] don't create pvpanic device by default Hu Tao
2013-08-02 8:27 ` Paolo Bonzini [this message]
2013-08-11 10:33 ` Michael S. Tsirkin
2013-08-11 14:45 ` Andreas Färber
2013-08-11 15:12 ` Michael S. Tsirkin
2013-08-11 15:16 ` Marcel Apfelbaum
2013-08-02 7:04 ` [Qemu-devel] [PATCH for-1.6 2/2] pvpanic: make pvpanic known to user Hu Tao
2013-08-02 12:20 ` Andreas Färber
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