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| author | Xie Yongji <xieyongji@bytedance.com> | 2022-05-23 16:46:09 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2022-06-24 17:07:06 +0200 |
| commit | 2a2359b84407b35fe978e98b7396f2ab8c5dd8b7 (patch) | |
| tree | 9ed8b268bc8db0f025db90f5307a822d5fdfb13a /block/export/export.c | |
| parent | a6caeee8111386b2d16ee07fe817193cde7f0d2a (diff) | |
| download | focaccia-qemu-2a2359b84407b35fe978e98b7396f2ab8c5dd8b7.tar.gz focaccia-qemu-2a2359b84407b35fe978e98b7396f2ab8c5dd8b7.zip | |
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 <xieyongji@bytedance.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220523084611.91-7-xieyongji@bytedance.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/export/export.c')
| -rw-r--r-- | block/export/export.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/export/export.c b/block/export/export.c index 7253af3bc3..4744862915 100644 --- a/block/export/export.c +++ b/block/export/export.c @@ -26,6 +26,9 @@ #ifdef CONFIG_VHOST_USER_BLK_SERVER #include "vhost-user-blk-server.h" #endif +#ifdef CONFIG_VDUSE_BLK_EXPORT +#include "vduse-blk.h" +#endif static const BlockExportDriver *blk_exp_drivers[] = { &blk_exp_nbd, @@ -35,6 +38,9 @@ static const BlockExportDriver *blk_exp_drivers[] = { #ifdef CONFIG_FUSE &blk_exp_fuse, #endif +#ifdef CONFIG_VDUSE_BLK_EXPORT + &blk_exp_vduse_blk, +#endif }; /* Only accessed from the main thread */ |