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Re: [PATCH for-4.2 0/2] Fix bitmap migration


From: Max Reitz
Subject: Re: [PATCH for-4.2 0/2] Fix bitmap migration
Date: Tue, 26 Nov 2019 11:31:52 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1

On 25.11.19 13:52, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
> 
> We've faced a bug in rhev-2.12.0-33.el7-based Qemu.
> In upstream, bug introduced in 4.0 by 74da6b943565c45
> "block/dirty-bitmaps: implement inconsistent bit" commit.
> At this commit we started to load inconsistent bitmap instead of
> silently ignoring them, and it now I see that it breaks migration.
> 
> The fix is very simple, so I think it's OK for 4.2.. Still, it's not a
> degradation, so we may postpone it to 5.0.
> 
> Vladimir Sementsov-Ogievskiy (2):
>   block/qcow2-bitmap: fix bitmap migration
>   iotests: add new test cases to bitmap migration
> 
>  block/qcow2-bitmap.c       | 21 ++++++++++++++++++++-
>  tests/qemu-iotests/169     | 22 +++++++++++++++-------
>  tests/qemu-iotests/169.out |  4 ++--
>  3 files changed, 37 insertions(+), 10 deletions(-)

Thanks, applied to my block branch:

https://git.xanclic.moe/XanClic/qemu/commits/branch/block

Max

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