Re: [Qemu-devel] [PATCH v4 13/26] qcow2: refcount_order parameter for qcow2_create2

[Eric Blake]

On 12/03/2014 06:37 AM, Max Reitz wrote:
> Add a refcount_order parameter to qcow2_create2(), use that value for
> the image header and for calculating the size required for
> preallocation.
> 
> For now, always pass 4.
> 
> This addition requires changes to the calculation of the file size for
> the "full" and "falloc" preallocation modes. That in turn is a nice
> opportunity to add a comment about that calculation not necessarily
> being exact (and that being intentional).
> 
> Signed-off-by: Max Reitz <address@hidden>
> ---
>  block/qcow2.c | 46 +++++++++++++++++++++++++++++++++++-----------
>  1 file changed, 35 insertions(+), 11 deletions(-)

Reviewed-by: Eric Blake <address@hidden>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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