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Re: [Qemu-devel] [PATCH] qcow2: fix autoclear image header update
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From: |
Kevin Wolf |
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Subject: |
Re: [Qemu-devel] [PATCH] qcow2: fix autoclear image header update |
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Date: |
Thu, 14 Jun 2012 13:06:10 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 |
Am 14.06.2012 12:42, schrieb Stefan Hajnoczi:
> The autoclear feature bits can be used for qcow2 file format features
> that are safe to "drop" by old programs that do not understand the
> feature. Upon opening the image file unknown autoclear feature bits are
> cleared and the image file header is rewritten, but this was happening
> too early in the code when critical header fields were not yet loaded.
>
> Process autoclear feature bits after all necessary header information
> has been loaded.
>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
Ouch...
You don't have a qemu-iotests case to offer for the feature bit
handling, by any chance?
Kevin