From 2a2359b84407b35fe978e98b7396f2ab8c5dd8b7 Mon Sep 17 00:00:00 2001 From: Xie Yongji Date: Mon, 23 May 2022 16:46:09 +0800 Subject: vduse-blk: Implement vduse-blk export This implements a VDUSE block backends based on the libvduse library. We can use it to export the BDSs for both VM and container (host) usage. The new command-line syntax is: $ qemu-storage-daemon \ --blockdev file,node-name=drive0,filename=test.img \ --export vduse-blk,node-name=drive0,id=vduse-export0,writable=on After the qemu-storage-daemon started, we need to use the "vdpa" command to attach the device to vDPA bus: $ vdpa dev add name vduse-export0 mgmtdev vduse Also the device must be removed via the "vdpa" command before we stop the qemu-storage-daemon. Signed-off-by: Xie Yongji Reviewed-by: Stefan Hajnoczi Message-Id: <20220523084611.91-7-xieyongji@bytedance.com> Signed-off-by: Kevin Wolf --- scripts/meson-buildoptions.sh | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'scripts') diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh index 66d3f372a0..d0e14fd6de 100644 --- a/scripts/meson-buildoptions.sh +++ b/scripts/meson-buildoptions.sh @@ -162,6 +162,8 @@ meson_options_help() { printf "%s\n" ' vhost-user vhost-user backend support' printf "%s\n" ' vhost-user-blk-server' printf "%s\n" ' build vhost-user-blk server' + printf "%s\n" ' vduse-blk-export' + printf "%s\n" ' VDUSE block export support' printf "%s\n" ' vhost-vdpa vhost-vdpa kernel backend support' printf "%s\n" ' virglrenderer virgl rendering support' printf "%s\n" ' virtfs virtio-9p support' @@ -432,6 +434,8 @@ _meson_option_parse() { --disable-vhost-user) printf "%s" -Dvhost_user=disabled ;; --enable-vhost-user-blk-server) printf "%s" -Dvhost_user_blk_server=enabled ;; --disable-vhost-user-blk-server) printf "%s" -Dvhost_user_blk_server=disabled ;; + --enable-vduse-blk-export) printf "%s" -Dvduse_blk_export=enabled ;; + --disable-vduse-blk-export) printf "%s" -Dvduse_blk_export=disabled ;; --enable-vhost-vdpa) printf "%s" -Dvhost_vdpa=enabled ;; --disable-vhost-vdpa) printf "%s" -Dvhost_vdpa=disabled ;; --enable-virglrenderer) printf "%s" -Dvirglrenderer=enabled ;; -- cgit v1.2.3-55-g7522