[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v5 0/8] Support exporting BDSs via VDUSE
From: |
Michael S. Tsirkin |
Subject: |
Re: [PATCH v5 0/8] Support exporting BDSs via VDUSE |
Date: |
Fri, 13 May 2022 06:03:00 -0400 |
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
- Re: [PATCH v5 3/8] block/export: Abstract out the logic of virtio-blk I/O process, (continued)
Re: [PATCH v5 0/8] Support exporting BDSs via VDUSE,
Michael S. Tsirkin <=