Re: [Qemu-block] [PATCH 21/22] specs/qcow2: fix bitmap granularity qemu-specific note

[Eric Blake]

On 09/30/2016 05:53 AM, Vladimir Sementsov-Ogievskiy wrote:
> Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
> ---
>  docs/specs/qcow2.txt | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/docs/specs/qcow2.txt b/docs/specs/qcow2.txt
> index 80cdfd0..d3e292f 100644
> --- a/docs/specs/qcow2.txt
> +++ b/docs/specs/qcow2.txt
> @@ -472,8 +472,7 @@ Structure of a bitmap directory entry:
>               17:    granularity_bits
>                      Granularity bits. Valid values: 0 - 63.

Can we really theoretically go as low as 0, or are we constrained by the
fact that cluster_bits must be at least 9?

>  
> -                    Note: Qemu currently doesn't support granularity_bits
> -                    greater than 31.
> +                    Note: Qemu currently support only values 9 - 31.

s/support/supports/

>  
>                      Granularity is calculated as
>                          granularity = 1 << granularity_bits
> 

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

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