Re: [Qemu-devel] [PATCH 0/2] Correct bitmap size in zero cluster expansion

[Kevin Wolf]

Am 25.09.2013 um 12:07 hat Max Reitz geschrieben:
> The current version of the zero cluster expansion uses the guest disk
> size for determining the size of the expanded_clusters bitmap, however,
> it is addressed using host offsets. This leads to an assertion failing if
> the host image size exceeds the guest disk size. This is fixed by using
> the host image size instead for allocating the bitmap.
> 
> This however uncovers another problem: If the host image is growable, it
> may grow during the zero cluster expansion due to cluster allocations. If
> this happens, the bitmap has to be resized accordingly.
> 
> Max Reitz (2):
>   qcow2: Correct bitmap size in zero expansion
>   qemu-iotests: Preallocated zero clusters in 061
> 
>  block/qcow2-cluster.c      | 38 +++++++++++++++++++++++++++-----------
>  tests/qemu-iotests/061     |  9 +++++++++
>  tests/qemu-iotests/061.out | 11 +++++++++++
>  3 files changed, 47 insertions(+), 11 deletions(-)

Thanks, applied to the block branch.

Kevin