[RFC v4 0/9] Add support for zoned device

[Sam Li]

This patch series adds support for zoned device to virtio-blk emulation. Zoned
Storage can support sequential writes, which reduces write amplification in SSD,
leading to higher write throughput and increased capacity.

v4:
- add block layer APIs (revision)
- add configurations for zoned block device

Sam Li (9):
  block: add block layer APIs resembling Linux ZonedBlockDevice ioctls.
  qemu-io: add zoned block device operations.
  file-posix: introduce get_sysfs_long_val for a block queue of sysfs
    attribute
  file-posix: introduce get_sysfs_str_val for device zoned model.
  qemu-iotests: test new zone operations.
  raw-format: add zone operations
  config: add check to block layer
  include: add support for zoned block devices
  qapi: add support for zoned host device

 block.c                                     |   7 +
 block/block-backend.c                       |  41 +++
 block/coroutines.h                          |   5 +
 block/file-posix.c                          | 334 +++++++++++++++++++-
 block/io.c                                  |  57 ++++
 block/raw-format.c                          |  13 +
 include/block/block-common.h                |  43 ++-
 include/block/block-io.h                    |  13 +
 include/block/block_int-common.h            |  25 ++
 include/standard-headers/linux/virtio_blk.h | 157 ++++++++-
 qapi/block-core.json                        |   7 +-
 qemu-io-cmds.c                              | 143 +++++++++
 tests/qemu-iotests/tests/zoned.sh           |  69 ++++
 13 files changed, 888 insertions(+), 26 deletions(-)
 create mode 100755 tests/qemu-iotests/tests/zoned.sh

-- 
2.36.1