This patch adds zoned storage emulation to the virtio-blk driver. It implements the virtio-blk ZBD support standardization that is recently accepted by virtio-spec. The link to related commit is at
https://github.com/oasis-tcs/virtio-spec/commit/b4e8efa0fa6c8d844328090ad15db65af8d7d981 The Linux zoned device code that implemented by Dmitry Fomichev has been released at the latest Linux version v6.3-rc1. Aside: adding zoned=on alike options to virtio-blk device will be considered in following-up plan. v11: - drop update virtio-blk header patch - fix CI issues [Stefan] v10: - adapt to the latest zone-append patches: rename bs->bl.wps to bs->wps v9: - address review comments * add docs for zoned emulation use case [Matias] * add the zoned feature bit to qmp monitor [Matias] * add the version number for newly added configs of accounting [Markus] v8: - address Stefan's review comments * rm aio_context_acquire/release in handle_req * rename function return type * rename BLOCK_ACCT_APPEND to BLOCK_ACCT_ZONE_APPEND for clarity v7: - update headers to v6.3-rc1 v6: - address Stefan's review comments * add accounting for zone append operation * fix in_iov usage in handle_request, error handling and typos v5: - address Stefan's review comments * restore the way writing zone append result to buffer * fix error checking case and other errands v4: - change the way writing zone append request result to buffer - change zone state, zone type value of virtio_blk_zone_descriptor - add trace events for new zone APIs v3: - use qemuio_from_buffer to write status bit [Stefan] - avoid using req->elem directly [Stefan] - fix error checkings and memory leak [Stefan] v2: - change units of emulated zone op coresponding to block layer APIs - modify error checking cases [Stefan, Damien] v1: - add zoned storage emulation Sam Li (4): virtio-blk: add zoned storage emulation for zoned devices block: add accounting for zone append operation virtio-blk: add some trace events for zoned emulation docs/zoned-storage:add zoned emulation use case block/qapi-sysemu.c | 11 + block/qapi.c | 18 ++ docs/devel/zoned-storage.rst | 17 ++ hw/block/trace-events | 7 + hw/block/virtio-blk-common.c | 2 + hw/block/virtio-blk.c | 405 +++++++++++++++++++++++++++++++++++ hw/virtio/virtio-qmp.c | 2 + include/block/accounting.h | 1 + qapi/block-core.json | 68 +++++- qapi/block.json | 4 + tests/qemu-iotests/227.out | 18 ++ 11 files changed, 542 insertions(+), 11 deletions(-) -- 2.40.0
