From: Paolo Bonzini <pbonzini@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Kevin Wolf <kwolf@redhat.com>, Jeff Cody <jcody@redhat.com>,
mtosatti@redhat.com, qemu-devel@nongnu.org, armbru@redhat.com,
Federico Simoncelli <fsimonce@redhat.com>,
Luiz Capitulino <lcapitulino@redhat.com>
Subject: Re: [Qemu-devel] drive transactions (was Re: [PATCH 2/2 v2] Add the blockdev-reopen and blockdev-migrate commands)
Date: Mon, 27 Feb 2012 18:06:58 +0100 [thread overview]
Message-ID: <4F4BB832.5000305@redhat.com> (raw)
In-Reply-To: <4F4BB639.6010200@codemonkey.ws>
On 02/27/2012 05:58 PM, Anthony Liguori wrote:
>>
>> Jeff could rework his patches to work with transaction begin/commit
>> commands, and Federico can then add drive-reopen and drive-migrate on
>> top.
>
> Yes, maybe I lack imagination but I fail to see how it generalizes
> easily/nicely.
> From what I can tell, all of the rollback logic is very specific to the
> commands being used, right?
The rollback logic is just "close the new devices".
The commit logic is specific to the commands being used, but reopen
should be easier than snapshot (and basically the same except for
backing_hd handling).
Migrate is really syntactic sugar around reopen, so no surprises there.
Paolo
next prev parent reply other threads:[~2012-02-27 17:07 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
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 [this message]
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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