From: Paolo Bonzini <pbonzini@redhat.com>
To: Federico Simoncelli <fsimonce@redhat.com>
Cc: kwolf@redhat.com, mtosatti@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 3/3] Add nocreate option to snapshot_blkdev
Date: Thu, 23 Feb 2012 12:30:42 +0100 [thread overview]
Message-ID: <4F462362.8030900@redhat.com> (raw)
In-Reply-To: <4f139104-52f4-485c-b06f-de456806a795@zmail16.collab.prod.int.phx2.redhat.com>
On 02/23/2012 11:19 AM, Federico Simoncelli wrote:
>>> I'm worried that blkmirror does not satisfy _all_ mirroring
>>> needs, for example you cannot use block_stream to copy from the
>>> source to the destination, so perhaps in the future we want to
>>> change it to something else.
>
> Are you talking about a mirroring where you block_stream the missing
> clusters in the destination from the source? I believe that it could
> be done without losing the blkmirror modularity probably extending
> the BlockDriver structure with some additional concepts.
Yes, agreed. It's not the idea of a driver that I don't like; it is
making it available through the command-line that worries me. This
would be unlike all other "filtering" options (copy-on-read, I/O limits,
dirty sector tracking). True, there are blkdebug and blkverify but
those are for debugging only.
Paolo
next prev parent reply other threads:[~2012-02-23 11:30 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-22 17:13 [Qemu-devel] Live Block Migration using Mirroring Federico Simoncelli
2012-02-22 17:13 ` [Qemu-devel] [PATCH 1/3] Add blkmirror block driver Federico Simoncelli
2012-02-23 16:14 ` Stefan Hajnoczi
2012-02-23 16:18 ` Stefan Hajnoczi
2012-02-23 16:20 ` Federico Simoncelli
2012-02-23 16:28 ` Stefan Hajnoczi
2012-02-23 16:51 ` Federico Simoncelli
2012-02-23 16:18 ` Federico Simoncelli
2012-02-27 9:23 ` Stefan Hajnoczi
2012-02-27 11:37 ` Paolo Bonzini
2012-02-27 11:42 ` Stefan Hajnoczi
2012-02-27 11:48 ` Paolo Bonzini
2012-02-27 13:09 ` Stefan Hajnoczi
2012-02-27 13:47 ` Paolo Bonzini
2012-02-27 14:49 ` Stefan Hajnoczi
2012-02-27 14:59 ` Stefan Hajnoczi
2012-02-27 15:08 ` Paolo Bonzini
2012-02-22 17:13 ` [Qemu-devel] [PATCH 2/3] Update the " Federico Simoncelli
2012-02-23 7:18 ` Paolo Bonzini
2012-02-23 9:44 ` Federico Simoncelli
2012-02-23 9:45 ` Paolo Bonzini
2012-02-22 17:13 ` [Qemu-devel] [PATCH 3/3] Add nocreate option to snapshot_blkdev Federico Simoncelli
2012-02-23 7:19 ` Paolo Bonzini
2012-02-23 7:38 ` Paolo Bonzini
2012-02-23 9:39 ` Federico Simoncelli
2012-02-23 9:48 ` Paolo Bonzini
2012-02-23 10:19 ` Federico Simoncelli
2012-02-23 11:30 ` Paolo Bonzini [this message]
2012-02-23 15:47 ` [Qemu-devel] Live Block Migration using Mirroring Stefan Hajnoczi
2012-02-23 16:10 ` Federico Simoncelli
2012-02-23 16:35 ` Stefan Hajnoczi
2012-02-23 17:06 ` Federico Simoncelli
2012-02-24 11:37 ` [Qemu-devel] [PATCH 1/2] Add blkmirror block driver Federico Simoncelli
2012-02-24 11:37 ` [Qemu-devel] [PATCH 2/2] Add the blockdev-reopen and blockdev-migrate commands Federico Simoncelli
2012-02-24 12:03 ` Kevin Wolf
2012-02-24 12:12 ` Federico Simoncelli
2012-02-24 13:11 ` Paolo Bonzini
2012-02-24 17:04 ` Luiz Capitulino
2012-02-27 14:57 ` Markus Armbruster
2012-02-24 16:49 ` [Qemu-devel] [PATCH 1/2 v2] Add blkmirror block driver Federico Simoncelli
2012-02-24 17:02 ` Eric Blake
2012-02-24 17:15 ` Federico Simoncelli
2012-02-24 18:49 ` Paolo Bonzini
2012-02-24 18:17 ` Luiz Capitulino
2012-02-27 9:17 ` Federico Simoncelli
2012-02-24 16:49 ` [Qemu-devel] [PATCH 2/2 v2] Add the blockdev-reopen and blockdev-migrate commands Federico Simoncelli
2012-02-24 17:46 ` Eric Blake
2012-02-24 18:57 ` Paolo Bonzini
2012-02-24 19:37 ` Eric Blake
2012-02-24 19:01 ` Luiz Capitulino
2012-02-24 19:40 ` Eric Blake
2012-02-24 20:26 ` Luiz Capitulino
2012-02-24 22:46 ` Eric Blake
2012-02-24 20:32 ` Paolo Bonzini
2012-02-24 20:36 ` Luiz Capitulino
2012-02-24 21:05 ` Paolo Bonzini
2012-02-24 22:30 ` Eric Blake
2012-02-25 6:47 ` Paolo Bonzini
2012-02-27 11:29 ` Federico Simoncelli
2012-02-27 12:12 ` Luiz Capitulino
2012-02-27 12:49 ` Paolo Bonzini
2012-02-27 13:06 ` Luiz Capitulino
2012-02-27 14:39 ` [Qemu-devel] drive transactions (was Re: [PATCH 2/2 v2] Add the blockdev-reopen and blockdev-migrate commands) Paolo Bonzini
2012-02-27 14:46 ` Anthony Liguori
2012-02-27 14:54 ` Paolo Bonzini
2012-02-27 14:59 ` Anthony Liguori
2012-02-27 15:03 ` Paolo Bonzini
2012-02-27 15:06 ` Anthony Liguori
2012-02-27 15:17 ` Kevin Wolf
2012-02-27 15:24 ` Anthony Liguori
2012-02-27 16:51 ` Paolo Bonzini
2012-02-27 16:58 ` Anthony Liguori
2012-02-27 17:06 ` Paolo Bonzini
2012-02-27 16:33 ` Federico Simoncelli
2012-02-27 16:41 ` Paolo Bonzini
2012-02-27 16:42 ` Anthony Liguori
2012-02-27 16:50 ` Federico Simoncelli
2012-02-27 16:53 ` Anthony Liguori
2012-02-27 16:54 ` Paolo Bonzini
2012-02-27 16:59 ` Anthony Liguori
2012-02-27 17:37 ` Luiz Capitulino
2012-02-28 15:47 ` [Qemu-devel] Live Block Migration using Mirroring Stefan Hajnoczi
2012-02-28 17:15 ` Federico Simoncelli
2012-02-28 17:36 ` Paolo Bonzini
2012-02-28 17:46 ` Federico Simoncelli
2012-02-28 18:02 ` Paolo Bonzini
2012-02-28 18:21 ` Federico Simoncelli
2012-02-28 17:26 ` Paolo Bonzini
2012-02-29 12:28 ` [Qemu-devel] [PATCHv3] Add blkmirror block driver Federico Simoncelli
2012-02-29 13:02 ` Federico Simoncelli
2012-02-29 17:01 ` [Qemu-devel] [PATCHv4] " Federico Simoncelli
2012-03-05 16:59 ` [Qemu-devel] Live Block Migration using Mirroring Marcelo Tosatti
2012-03-05 17:20 ` Eric Blake
2012-03-05 17:44 ` Marcelo Tosatti
2012-03-05 18:05 ` Paolo Bonzini
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