This patch series converts Coiby Xu's vhost-user-blk-server from a QOM object
to the block exports API. The block exports API provides a standard QMP and
command-line interface for managing block exports (NBD, FUSE, vhost-user-blk,
etc). A fair amount of init/shutdown code is removed because the block exports
API already takes care of that functionality.
Most of the patches are vhost-user-blk-server cleanups.
The syntax for launching qemu-storage-daemon is:
$ qemu-storage-daemon \
--blockdev file,node-name=drive0,filename=test.img \
--export
vhost-user-blk,node-name=drive0,id=export0,writable=on,unix-socket=/tmp/vhost-user-blk.sock
QEMU can connect to the vhost-user-blk export like this:
$ qemu-system-x86_64 \
-M accel=kvm,memory-backend=mem \
-m 1G \
-object memory-backend-memfd,size=1G,id=mem \
-cpu host \
-chardev socket,path=/tmp/vhost-user-blk.sock,id=char0 \
-device vhost-user-blk-pci,chardev=char0
Based-on: 20200918080912.321299-1-coiby...@gmail.com ("[PATCH v10 0/7]
vhost-user block device backend implementation")
Based-on: 20200907182011.521007-1-kw...@redhat.com ("[PATCH 00/29]
block/export: Add infrastructure and QAPI for block exports")
Stefan Hajnoczi (11):
block/export: shorten serial string to fit
util/vhost-user-server: s/fileds/fields/ typo fix
util/vhost-user-server: drop unnecessary QOM cast
util/vhost-user-server: drop unnecessary watch deletion
block/export: consolidate request structs into VuBlockReq
util/vhost-user-server: drop unused DevicePanicNotifier
util/vhost-user-server: fix memory leak in vu_message_read()
util/vhost-user-server: check EOF when reading payload
util/vhost-user-server: rework vu_client_trip() coroutine lifecycle
block/export: report flush errors
block/export: convert vhost-user-blk server to block export API
qapi/block-export.json | 19 +-
block/export/vhost-user-blk-server.h | 23 +-
util/vhost-user-server.h | 32 +-
block/export/export.c | 8 +-
block/export/vhost-user-blk-server.c | 534 ++++++++-------------------
util/vhost-user-server.c | 322 ++++++++--------
block/export/meson.build | 1 +
block/meson.build | 1 -
8 files changed, 360 insertions(+), 580 deletions(-)
--
2.26.2
