| Message ID | 20220504074051.90-1-xieyongji@bytedance.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Support exporting BDSs via VDUSE | expand |
On Wed, May 04, 2022 at 03:40:43PM +0800, Xie Yongji wrote: > Hi all, > > Last few months ago, VDUSE (vDPA Device in Userspace) [1] has > been merged into Linux kernel as a framework that make it > possible to emulate a vDPA device in userspace. This series > aimed at implementing a VDUSE block backend based on the > qemu-storage-daemon infrastructure. > > To support that, we firstly introduce a VDUSE library as a > subproject (like what libvhost-user does) to help implementing > VDUSE backends in QEMU. Then a VDUSE block export is implemented > based on this library. At last, we add resize and reconnect support > to the VDUSE block export and VDUSE library. > > Since we don't support vdpa-blk in QEMU currently, the VM case is > tested with my previous patchset [2]. > > [1] https://www.kernel.org/doc/html/latest/userspace-api/vduse.html > [2] https://www.mail-archive.com/qemu-devel@nongnu.org/msg797569.html > > Please review, thanks! This needs review by storage maintainers. > V4 to V5: > - Abstract out the logic for virito-blk I/O process from > vhost-user-blk-server and reuse it [Kevin] > - Fix missing VIRTIO_BLK_F_FLUSH [Kevin] > - Support discard and write_zeroes [Kevin] > - Rebase to the newest tree > > V3 to V4: > - Fix some comments on QAPI [Eric] > > V2 to V3: > - Introduce vduse_get_virtio_features() [Stefan] > - Update MAINTAINERS file [Stefan] > - Fix handler of VIRTIO_BLK_T_GET_ID request [Stefan] > - Add barrier for vduse_queue_inflight_get() [Stefan] > > V1 to V2: > - Move vduse header to linux-headers [Stefan] > - Add two new API to support creating device from /dev/vduse/$NAME or > file descriptor [Stefan] > - Check VIRTIO_F_VERSION_1 during intialization [Stefan] > - Replace malloc() + memset to calloc() [Stefan] > - Increase default queue size to 256 for vduse-blk [Stefan] > - Zero-initialize virtio-blk config space [Stefan] > - Add a patch to support reset blk->dev_ops > - Validate vq->log->inflight fields [Stefan] > - Add vduse_set_reconnect_log_file() API to support specifing the > reconnect log file > - Fix some bugs [Stefan] > > Xie Yongji (8): > block: Support passing NULL ops to blk_set_dev_ops() > block-backend: Introduce blk_get_guest_block_size() > block/export: Abstract out the logic of virtio-blk I/O process > linux-headers: Add vduse.h > libvduse: Add VDUSE (vDPA Device in Userspace) library > vduse-blk: Implement vduse-blk export > vduse-blk: Add vduse-blk resize support > libvduse: Add support for reconnecting > > MAINTAINERS | 9 + > block/block-backend.c | 8 +- > block/export/export.c | 6 + > block/export/meson.build | 7 +- > block/export/vduse-blk.c | 346 +++++ > block/export/vduse-blk.h | 20 + > block/export/vhost-user-blk-server.c | 249 +--- > block/export/virtio-blk-handler.c | 237 ++++ > block/export/virtio-blk-handler.h | 33 + > include/sysemu/block-backend-io.h | 1 + > linux-headers/linux/vduse.h | 306 ++++ > meson.build | 28 + > meson_options.txt | 4 + > qapi/block-export.json | 25 +- > scripts/meson-buildoptions.sh | 7 + > scripts/update-linux-headers.sh | 2 +- > subprojects/libvduse/include/atomic.h | 1 + > subprojects/libvduse/include/compiler.h | 1 + > subprojects/libvduse/libvduse.c | 1386 +++++++++++++++++++ > subprojects/libvduse/libvduse.h | 247 ++++ > subprojects/libvduse/linux-headers/linux | 1 + > subprojects/libvduse/meson.build | 10 + > subprojects/libvduse/standard-headers/linux | 1 + > 23 files changed, 2695 insertions(+), 240 deletions(-) > create mode 100644 block/export/vduse-blk.c > create mode 100644 block/export/vduse-blk.h > create mode 100644 block/export/virtio-blk-handler.c > create mode 100644 block/export/virtio-blk-handler.h > create mode 100644 linux-headers/linux/vduse.h > create mode 120000 subprojects/libvduse/include/atomic.h > create mode 120000 subprojects/libvduse/include/compiler.h > create mode 100644 subprojects/libvduse/libvduse.c > create mode 100644 subprojects/libvduse/libvduse.h > create mode 120000 subprojects/libvduse/linux-headers/linux > create mode 100644 subprojects/libvduse/meson.build > create mode 120000 subprojects/libvduse/standard-headers/linux > > -- > 2.20.1
On Fri, May 13, 2022 at 6:03 PM Michael S. Tsirkin <mst@redhat.com> wrote: > > On Wed, May 04, 2022 at 03:40:43PM +0800, Xie Yongji wrote: > > Hi all, > > > > Last few months ago, VDUSE (vDPA Device in Userspace) [1] has > > been merged into Linux kernel as a framework that make it > > possible to emulate a vDPA device in userspace. This series > > aimed at implementing a VDUSE block backend based on the > > qemu-storage-daemon infrastructure. > > > > To support that, we firstly introduce a VDUSE library as a > > subproject (like what libvhost-user does) to help implementing > > VDUSE backends in QEMU. Then a VDUSE block export is implemented > > based on this library. At last, we add resize and reconnect support > > to the VDUSE block export and VDUSE library. > > > > Since we don't support vdpa-blk in QEMU currently, the VM case is > > tested with my previous patchset [2]. > > > > [1] https://www.kernel.org/doc/html/latest/userspace-api/vduse.html > > [2] https://www.mail-archive.com/qemu-devel@nongnu.org/msg797569.html > > > > Please review, thanks! > > This needs review by storage maintainers. > Hi Stefan and Kevin, could you take a look? Thanks, Yongji