From: Avi Kivity <avi@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
Dor Laor <dlaor@redhat.com>,
Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>,
jes sorensen <jes.sorensen@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel@nongnu.org, Adam Litke <agl@us.ibm.com>
Subject: Re: [Qemu-devel] Image streaming and live block copy
Date: Thu, 16 Jun 2011 15:49:40 +0300 [thread overview]
Message-ID: <4DF9FBE4.9080300@redhat.com> (raw)
In-Reply-To: <4DF9F899.5050301@redhat.com>
On 06/16/2011 03:35 PM, Kevin Wolf wrote:
> * Image streaming is a normal image file plus copy-on-read plus a
> background task that copies data from the source image
Or a block-mirror started in degraded mode.
> * Live block copy is a block-mirror of two normal image files plus a
> background task that copies data from the source image
= block-mirror started in degraded mode
> The right solution is probably to implement COR and the background task
> in generic block layer code (no reason to restrict it to QED) and use it
> for both image streaming and live block copy. (This is a bit more
> complicated than it may sound here because guest writes must always take
> precedence over a copy - but doing complicated things is an even better
> reason to do it in a common place instead of duplicating)
Or in a block-mirror block format driver - generic code need not be
involved.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-06-16 13:32 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-14 18:18 [Qemu-devel] [PATCH 00/13] QED image streaming Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 01/13] qemu-config: }, { -> }, { to please checkpatch.pl Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 02/13] block: add -drive copy-on-read=on|off Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 03/13] qed: replace is_write with flags field Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 04/13] qed: extract qed_start_allocating_write() Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 05/13] qed: make qed_aio_write_alloc() reusable Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 06/13] qed: add support for copy-on-read Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 07/13] qed: avoid deadlock on emulated synchronous I/O Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 08/13] qerror: add qerror_from_args() to create qerror objects Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 09/13] block: add bdrv_aio_copy_backing() Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 10/13] qmp: add QMP support for stream commands Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 11/13] block: add -drive stream=on|off Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 12/13] qed: intelligent streaming implementation Stefan Hajnoczi
2011-06-14 18:18 ` [Qemu-devel] [PATCH 13/13] trace: trace bdrv_aio_readv/writev error paths Stefan Hajnoczi
2011-06-15 10:46 ` [Qemu-devel] [PATCH 00/13] QED image streaming Philipp Hahn
2011-06-15 12:18 ` Stefan Hajnoczi
2011-06-16 12:35 ` [Qemu-devel] Image streaming and live block copy (was: [PATCH 00/13] QED image streaming) Kevin Wolf
2011-06-16 12:49 ` Avi Kivity [this message]
2011-06-16 13:08 ` [Qemu-devel] Image streaming and live block copy Kevin Wolf
2011-06-16 13:38 ` Avi Kivity
2011-06-16 14:52 ` Marcelo Tosatti
2011-06-16 15:30 ` Stefan Hajnoczi
2011-06-17 12:31 ` Marcelo Tosatti
2011-06-18 9:15 ` Stefan Hajnoczi
2011-06-18 9:17 ` Stefan Hajnoczi
2011-06-19 16:02 ` Dor Laor
2011-06-24 9:28 ` Stefan Hajnoczi
2011-06-26 12:50 ` Dor Laor
2011-06-27 7:48 ` Kevin Wolf
2011-06-27 9:13 ` Dor Laor
2011-06-17 13:54 ` Marcelo Tosatti
2011-06-17 8:36 ` Kevin Wolf
2011-06-17 8:57 ` Stefan Hajnoczi
2011-06-17 9:22 ` Kevin Wolf
2011-06-17 10:11 ` Stefan Hajnoczi
2011-06-17 12:21 ` Anthony Liguori
2011-06-17 13:04 ` Marcelo Tosatti
2011-06-17 13:50 ` Marcelo Tosatti
2011-06-16 13:10 ` Anthony Liguori
2011-06-16 13:50 ` Kevin Wolf
2011-06-16 14:38 ` [Qemu-devel] Image streaming and live block copy (was: [PATCH 00/13] QED image streaming) Marcelo Tosatti
2011-06-16 14:55 ` Marcelo Tosatti
2011-06-17 8:21 ` [Qemu-devel] Image streaming and live block copy Kevin Wolf
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