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Re: Early 4.1.1 release for image corruption fixes?
From: |
Daniel P . Berrangé |
Subject: |
Re: Early 4.1.1 release for image corruption fixes? |
Date: |
Fri, 25 Oct 2019 16:03:19 +0100 |
User-agent: |
Mutt/1.12.1 (2019-06-15) |
On Fri, Oct 25, 2019 at 04:29:15PM +0200, Kevin Wolf wrote:
> Hi,
>
> the QEMU 4.1.0 release has two problems that can easily cause image
> corruption with any qcow2 images (no special configuration needed to
> trigger the bugs):
>
> 1. A locking bug in the qcow2 code. I just sent a pull request that
> includes the fix for this. The important patch there is:
>
> 'qcow2: Fix corruption bug in qcow2_detect_metadata_preallocation()'
>
> 2. A kernel bug in the XFS driver that became visible by new I/O
> patterns the qcow2 implementation started to use in 4.1. Max is
> currently working on a workaround for this.
>
> The Planning/4.1 wiki page tells me that a 4.1.1 release is planned for
> end of November, which isn't too far, but I was wondering if want to
> have a stable release even earlier, right after the fixes for both
> problems are in.
IMHO data corruption for our primary image format is an excellent
reason to do a stable release at the soonest viable opportunity.
Regards,
Daniel
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