Re: Migration with ``drive-mirror`` + NBD will let quorum qcow2 image become larger

[Tao Xu]

On 5/19/2020 10:49 PM, Alberto Garcia wrote:
> On Tue 19 May 2020 11:15:44 AM CEST, Kevin Wolf wrote:
> > But maybe it could return a limited set of flags at least so that the
> > mirror job can get the BDRV_BLOCK_ZERO information if the quorum
> > children agree on it.
>
> Yeah, maybe it is possible to implement a conservative version of that
> function and fall back to BDRV_BLOCK_DATA | BDRV_BLOCK_ALLOCATED (or
> something like that) in the cases where there's no clear alternative.
>
> Berto

Thank you Kevin and Berto for your suggestion.