I think cluster-size should not be exposed in QAPI (yet), but Kevin's patch does that, while I had these patches lying around, so here is my proposal.
Max Reitz (3): vdi: Pull option parsing from vdi_co_create vdi: Move file creation to vdi_co_create_opts vdi: Implement .bdrv_co_create qapi/block-core.json | 20 +++++++- block/vdi.c | 139 +++++++++++++++++++++++++++++++++++++++++---------- 2 files changed, 132 insertions(+), 27 deletions(-) -- 2.14.3