v8 - re-try connecting to socket server to fix asan error - fix license naming issue
v7 - fix docker-test-debug@fedora errors by freeing malloced memory v6 - add missing license header and include guard - vhost-user server only serve one client one time - fix a bug in custom vu_message_read - using qemu-storage-daemon to start vhost-user-blk-server - a bug fix to pass docker-test-clang@ubuntu v5: * re-use vu_kick_cb in libvhost-user * keeping processing VhostUserMsg in the same coroutine until there is detachment/attachment of AIOContext * Spawn separate coroutine for each VuVirtqElement * Other changes including relocating vhost-user-blk-server.c, coding style etc. v4: * add object properties in class_init * relocate vhost-user-blk-test * other changes including using SocketAddress, coding style, etc. v3: * separate generic vhost-user-server code from vhost-user-blk-server code * re-write vu_message_read and kick hander function as coroutines to directly call blk_co_preadv, blk_co_pwritev, etc. * add aio_context notifier functions to support multi-threading model * other fixes regarding coding style, warning report, etc. v2: * Only enable this feature for Linux because eventfd is a Linux-specific feature This patch series is an implementation of vhost-user block device backend server, thanks to Stefan and Kevin's guidance. Vhost-user block device backend server is a UserCreatable object and can be started using object_add, (qemu) object_add vhost-user-blk-server,id=ID,unix-socket=/tmp/vhost-user-blk_vhost.socket,node-name=DRIVE_NAME,writable=off,blk-size=512 (qemu) object_del ID or appending the "-object" option when starting QEMU, $ -object vhost-user-blk-server,id=disk,unix-socket=/tmp/vhost-user-blk_vhost.socket,node-name=DRIVE_NAME,writable=off,blk-size=512 Then vhost-user client can connect to the server backend. For example, QEMU could act as a client, $ -m 256 -object memory-backend-memfd,id=mem,size=256M,share=on -numa node,memdev=mem -chardev socket,id=char1,path=/tmp/vhost-user-blk_vhost.socket -device vhost-user-blk-pci,id=blk0,chardev=char1 And guest OS could access this vhost-user block device after mounting it. Coiby Xu (4): Allow vu_message_read to be replaced generic vhost user server vhost-user block device backend server new qTest case to test the vhost-user-blk-server block/Makefile.objs | 1 + block/export/vhost-user-blk-server.c | 716 ++++++++++++++++++++ block/export/vhost-user-blk-server.h | 34 + contrib/libvhost-user/libvhost-user-glib.c | 2 +- contrib/libvhost-user/libvhost-user.c | 11 +- contrib/libvhost-user/libvhost-user.h | 21 + softmmu/vl.c | 4 + tests/Makefile.include | 3 +- tests/qtest/Makefile.include | 2 + tests/qtest/libqos/vhost-user-blk.c | 130 ++++ tests/qtest/libqos/vhost-user-blk.h | 44 ++ tests/qtest/libqtest.c | 54 +- tests/qtest/libqtest.h | 38 ++ tests/qtest/vhost-user-blk-test.c | 737 +++++++++++++++++++++ tests/vhost-user-bridge.c | 2 + tools/virtiofsd/fuse_virtio.c | 4 +- util/Makefile.objs | 1 + util/vhost-user-server.c | 406 ++++++++++++ util/vhost-user-server.h | 59 ++ 19 files changed, 2229 insertions(+), 40 deletions(-) create mode 100644 block/export/vhost-user-blk-server.c create mode 100644 block/export/vhost-user-blk-server.h create mode 100644 tests/qtest/libqos/vhost-user-blk.c create mode 100644 tests/qtest/libqos/vhost-user-blk.h create mode 100644 tests/qtest/vhost-user-blk-test.c create mode 100644 util/vhost-user-server.c create mode 100644 util/vhost-user-server.h -- 2.26.2
