Now qemu only supports vhd type VHD_FIXED and VHD_DYNAMIC, so qemu can't read snapshot volume of vhd, and can't support other storage features of vhd file. The RFC adds vhd type VHD_DIFFERENCING support for qemu.
Ding xiao (1): Support vhd type VHD_DIFFERENCING block/vpc.c | 302 ++++++++++++++++++++++++++++++++++++++++++++++++++--------- 1 files changed, 259 insertions(+), 43 deletions(-)
