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Re: [Qemu-devel] [PATCH v8 08/10] qapi: Add transaction support to block


From: Max Reitz
Subject: Re: [Qemu-devel] [PATCH v8 08/10] qapi: Add transaction support to block-dirty-bitmap-{add, enable, disable}
Date: Thu, 27 Nov 2014 11:25:35 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0

On 2014-11-26 at 18:41, John Snow wrote:
From: Fam Zheng <address@hidden>

This adds three qmp commands to transactions.

Users can stop a dirty bitmap, start backup of it, and start another
dirty bitmap atomically, so that the dirty bitmap is tracked
incrementally and we don't miss any write.

Signed-off-by: Fam Zheng <address@hidden>
Signed-off-by: John Snow <address@hidden>
---
  blockdev.c       | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  qapi-schema.json |  5 +++-
  2 files changed, 89 insertions(+), 1 deletion(-)

[snip]

diff --git a/blockdev.c b/blockdev.c
index 1a56959..275eb43 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1564,6 +1634,21 @@ static const BdrvActionOps actions[] = {
          .prepare  = internal_snapshot_prepare,
          .abort = internal_snapshot_abort,
      },

I probably missed that in my review for v7 because I based that on my/Kevin's block-next branch instead of Stefan's (which I'm doing now): This conflicts with Stefan's AioContext series. Now there's a .clean, so it should read:

         .abort = internal_snapshot_abort,
         .clean = internal_snapshot_clean,
     },

(Hopefully nbsps will keep Thunderbird from breaking the indentation...)

With that fixed:

Reviewed-by: Max Reitz <address@hidden>



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