On 06/15/2012 09:05 AM, Paolo Bonzini wrote:
> The desired granularity may be very different depending on the kind of operation
> (e.g. continous replication vs. collapse-to-raw) and whether the VM is expected
> to perform lots of I/O while mirroring is in progress.  Allow the user to customize
> it.

> +++ b/qapi-schema.json
> @@ -1383,6 +1383,8 @@
>  #        (all the disk, only the sectors allocated in the topmost image, or
>  #        only new I/O).
>  #
> +# @granularity: #optional granularity of the dirty bitmap, default is 64K.

What happens if the user doesn't pass in a power of 2?  Is there a
minimum or maximum acceptable value?

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