On 4/15/23 15:48, wangjian (AN) wrote: > Hi Guys, > > > > Currently qemu and spdk already support vhost-user-scsi, but there is > no vhost-user-scsi configuration in libvirt. > > We hope that libvirt supports the following configurations to > facilitate docking with qemu. > > > > <controller type='scsi' index='0' model='vhost-user-scsi'> > > <driver queues='4'/> > > <source type='unix' path='/var/tmp/scsi'> > > <reconnect enabled='yes' timeout='3'/> > > </source> > > <address type='pci' domain='0x0000' bus='0x02' slot='0x02' > function='0x0'/> > > </controller> > > > > The usage in qemu like this: > > -chardev socket,id=chr-vu-virtio-disk10,path=/var/tmp/scsi,reconnect=3 > > -device > vhost-user-blk-pci,num-queues=4,bus=pci.2,addr=0x0,chardev=chr-vu-virt > io-disk10,id=scsi0 > > > > Could anyone give some suggestions? > That's very likely because nobody wrote patches for it. I do not think there was a discussion where we decided to deliberately not support it. But I guess, what advantage there is in letting an external helper manage a <controller/> ? I though, vhost-user-* is ideal for individual devices rather than controllers. Meanwhile, for testing purposes (definitely NOT production), you can use qemu:command line passthrough: https://libvirt.org/kbase/qemu-passthrough-security.html Michal