On Wed, May 04, 2022 at 03:40:49PM +0800, Xie Yongji wrote: > This implements a VDUSE block backends based on > the libvduse library. We can use it to export the BDSs > for both VM and container (host) usage. > > The new command-line syntax is: > > $ qemu-storage-daemon \ > --blockdev file,node-name=drive0,filename=test.img \ > --export vduse-blk,node-name=drive0,id=vduse-export0,writable=on > > After the qemu-storage-daemon started, we need to use > the "vdpa" command to attach the device to vDPA bus: > > $ vdpa dev add name vduse-export0 mgmtdev vduse > > Also the device must be removed via the "vdpa" command > before we stop the qemu-storage-daemon. > > Signed-off-by: Xie Yongji <xieyon...@bytedance.com> > --- > MAINTAINERS | 4 +- > block/export/export.c | 6 + > block/export/meson.build | 5 + > block/export/vduse-blk.c | 312 ++++++++++++++++++++++++++++++++++ > block/export/vduse-blk.h | 20 +++ > meson.build | 13 ++ > meson_options.txt | 2 + > qapi/block-export.json | 25 ++- > scripts/meson-buildoptions.sh | 4 + > 9 files changed, 388 insertions(+), 3 deletions(-) > create mode 100644 block/export/vduse-blk.c > create mode 100644 block/export/vduse-blk.h
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
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