From: Kevin Wolf <kwolf@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org, qemu-devel@nongnu.org,
Blue Swirl <blauwirbel@gmail.com>,
ceph-devel@vger.kernel.org, Christian Brunner <chb@muc.de>
Subject: Re: [Qemu-devel] [RFC PATCH 1/1] ceph/rbd block driver for qemu-kvm
Date: Tue, 25 May 2010 13:02:30 +0200 [thread overview]
Message-ID: <4BFBAE46.5050801@redhat.com> (raw)
In-Reply-To: <4BF91937.2070801@redhat.com>
Am 23.05.2010 14:01, schrieb Avi Kivity:
> On 05/21/2010 12:29 AM, Anthony Liguori wrote:
>>
>> I'd be more interested in enabling people to build these types of
>> storage systems without touching qemu.
>>
>> Both sheepdog and ceph ultimately transmit I/O over a socket to a
>> central daemon, right?
>
> That incurs an extra copy.
>
>> So could we not standardize a protocol for this that both sheepdog and
>> ceph could implement?
>
> The protocol already exists, nbd. It doesn't support snapshotting etc.
> but we could extend it.
>
> But IMO what's needed is a plugin API for the block layer.
What would it buy us, apart from more downstreams and having to maintain
a stable API and ABI? Hiding block drivers somewhere else doesn't make
them stop existing, they just might not be properly integrated, but
rather hacked in to fit that limited stable API.
Kevin
next prev parent reply other threads:[~2010-05-25 11:02 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-19 19:22 [Qemu-devel] [RFC PATCH 1/1] ceph/rbd block driver for qemu-kvm Christian Brunner
2010-05-20 20:31 ` Blue Swirl
2010-05-20 21:18 ` Christian Brunner
2010-05-20 21:29 ` Anthony Liguori
2010-05-20 22:16 ` Christian Brunner
2010-05-21 5:28 ` Stefan Hajnoczi
2010-05-21 6:13 ` MORITA Kazutaka
2010-05-21 5:54 ` MORITA Kazutaka
2010-05-23 12:01 ` Avi Kivity
2010-05-24 7:12 ` MORITA Kazutaka
2010-05-24 11:05 ` Avi Kivity
2010-05-24 11:42 ` MORITA Kazutaka
2010-05-24 11:56 ` Avi Kivity
2010-05-24 12:07 ` Cláudio Martins
2010-05-24 14:01 ` MORITA Kazutaka
2010-05-24 19:07 ` Christian Brunner
2010-05-24 19:38 ` Anthony Liguori
2010-05-25 9:14 ` Avi Kivity
2010-05-25 13:17 ` Anthony Liguori
2010-05-25 13:25 ` Avi Kivity
2010-05-25 13:29 ` Anthony Liguori
2010-05-25 13:36 ` Avi Kivity
2010-05-25 13:54 ` Anthony Liguori
2010-05-25 13:57 ` Avi Kivity
2010-05-25 14:02 ` Anthony Liguori
2010-05-26 8:44 ` Avi Kivity
2010-05-25 14:01 ` Kevin Wolf
2010-05-25 16:21 ` Avi Kivity
2010-05-25 17:12 ` Sage Weil
2010-05-26 5:24 ` MORITA Kazutaka
2010-05-26 8:46 ` Avi Kivity
2010-05-24 19:16 ` Anthony Liguori
2010-05-25 9:19 ` Avi Kivity
2010-05-25 13:26 ` MORITA Kazutaka
2010-05-24 8:27 ` Stefan Hajnoczi
2010-05-24 11:03 ` Avi Kivity
2010-05-24 19:19 ` Anthony Liguori
2010-05-25 9:22 ` Avi Kivity
2010-05-25 11:02 ` Kevin Wolf [this message]
2010-05-25 11:25 ` Avi Kivity
2010-05-25 12:03 ` Christoph Hellwig
2010-05-25 12:13 ` Avi Kivity
2010-05-25 13:25 ` Anthony Liguori
2010-05-25 13:31 ` Avi Kivity
2010-05-25 13:35 ` Anthony Liguori
2010-05-25 13:38 ` Avi Kivity
2010-05-25 13:55 ` Anthony Liguori
2010-05-25 14:01 ` Avi Kivity
2010-05-25 14:05 ` Anthony Liguori
2010-05-25 15:00 ` Avi Kivity
2010-05-25 15:01 ` Anthony Liguori
2010-05-25 16:16 ` Avi Kivity
2010-05-25 16:21 ` Anthony Liguori
2010-05-25 16:27 ` Avi Kivity
2010-05-25 13:53 ` Kevin Wolf
2010-05-25 13:55 ` Avi Kivity
2010-05-25 14:03 ` Anthony Liguori
2010-05-25 15:02 ` Avi Kivity
2010-05-25 14:09 ` Kevin Wolf
2010-05-25 15:01 ` Avi Kivity
2010-05-20 23:02 ` Yehuda Sadeh Weinraub
2010-05-23 7:59 ` Blue Swirl
2010-05-24 2:17 ` Yehuda Sadeh Weinraub
2010-05-25 20:13 ` Blue Swirl
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