Messages in this thread | | | Subject | Re: [PATCH v13 00/13] Introduce VDUSE - vDPA Device in Userspace | From | Liuxiangdong <> | Date | Mon, 11 Oct 2021 15:32:49 +0800 |
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Hi, Yongji.
I tried vduse with null-blk:
$ qemu-storage-daemon \ --chardev socket,id=charmonitor,path=/tmp/qmp.sock,server,nowait \ --monitor chardev=charmonitor \ --blockdev driver=host_device,cache.direct=on,aio=native,filename=/dev/nullb0,node-name=disk0 \ --export type=vduse-blk,id=test,node-name=disk0,writable=on,name=vduse-null,num-queues=16,queue-size=128
The qemu-storage-daemon is yours (https://github.com/bytedance/qemu/tree/vduse)
And then, how can we use this vduse-null (dev/vduse/vduse-null) in vm(QEMU)?
Because qemu-storage-daemon open this vduse-null in vduse_dev_init(), all the operations which open this dev will report "failed to open '/dev/vduse/vduse-null': Device or resource busy".
Or something I understood wrong?
Thanks! Xiangdong Liu
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