Re: [Qemu-devel] [PATCH 0/2] Fix the reopening of images in 'block-commit'

[Kevin Wolf]

Am 28.10.2015 um 14:43 hat Alberto Garcia geschrieben:
> This series fixes a bug in the 'block-commit' operation under the
> following scenario:
> 
>    [A] <- [B] <- [C] <- [D]
> 
> If we do block-commit top=B base=A, the contents of [B] will be
> written into [A] resulting in this chain:
> 
>    [A] <- [C] <- [D]
> 
> In order to perform this operation, [A] must be reopened in read-write
> mode but so does [C] because its backing file string needs to be
> updated to point at [A].
> 
> There's a bug in the current code that makes [A] read-only again when
> [C] is reopened. This series includes a fix for that bug plus a test
> case for the scenario.
> 
> This affects both master and the 2.4 branch.

Thanks, applied to the block branch.

Kevin