From: Cornelia Huck <cohuck@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: Jan Dakinevich <jan.dakinevich@virtuozzo.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Max Reitz <mreitz@redhat.com>, Amit Shah <amit@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Markus Armbruster <armbru@redhat.com>,
"Denis V. Lunev" <den@virtuozzo.com>
Subject: Re: [Qemu-devel] [PATCH v2] virtio: introduce `info virtio' hmp command
Date: Thu, 28 Sep 2017 12:12:43 +0200 [thread overview]
Message-ID: <20170928121243.56aced1f.cohuck@redhat.com> (raw)
In-Reply-To: <20170928100235.GA5826@localhost.localdomain>
On Thu, 28 Sep 2017 12:02:35 +0200
Kevin Wolf <kwolf@redhat.com> wrote:
> Am 28.09.2017 um 01:05 hat Jan Dakinevich geschrieben:
> > > OK but if it's useful as an hmp command, why not as a qmp command?
> >
> > The command is designed for debugging and produces quite sightly output. For
> > respective qmp command most of `info virtio' output would excessive and
> > unneccesary.
>
> The general policy is that HMP commands should only call QMP command
> implementations internally rather than doing things themselves, to make
> sure that a management tool can achieve everything the monitor provides
> with QMP and doesn't have to fall back to parsing HMP output.
>
> If we are certain that this feature is useless for automated use and
> nobody will ever want to use it in scripts (sounds like a bold claim to
> me), maybe an exception can be justified. I think this is up to the
> monitor maintainers.
Having a way to get at things like virtio status might be useful (for
example, noticing if a device has NEEDS_RESET set).
next prev parent reply other threads:[~2017-09-28 10:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-27 15:09 [Qemu-devel] [PATCH v2] virtio: introduce `info virtio' hmp command Jan Dakinevich
2017-09-27 15:53 ` Dr. David Alan Gilbert
2017-09-27 17:33 ` Jan Dakinevich
2017-09-27 19:43 ` Michael S. Tsirkin
2017-09-27 23:05 ` Jan Dakinevich
2017-09-28 10:02 ` Kevin Wolf
2017-09-28 10:12 ` Cornelia Huck [this message]
2017-09-28 10:41 ` Dr. David Alan Gilbert
2017-09-28 10:14 ` Daniel P. Berrange
2017-09-28 10:25 ` Dr. David Alan Gilbert
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