Re: [Qemu-devel] [PULL 18/33] vhost-user-scsi: Introduce vhost-user-scsi host device

[Peter Maydell]

On 7 June 2017 at 16:28, Paolo Bonzini <address@hidden> wrote:
> From: Felipe Franciosi <address@hidden>
>
> This commit introduces a vhost-user device for SCSI. This is based
> on the existing vhost-scsi implementation, but done over vhost-user
> instead. It also uses a chardev to connect to the backend. Unlike
> vhost-scsi (today), VMs using vhost-user-scsi can be live migrated.
>
> To use it, start Qemu with a command line equivalent to:
>
> qemu-system-x86_64 \
>        -chardev socket,id=vus0,path=/tmp/vus.sock \
>        -device vhost-user-scsi-pci,chardev=vus0,bus=pci.0,addr=...
>
> A separate commit presents a sample application linked with libiscsi to
> provide a backend for vhost-user-scsi.
>
> Signed-off-by: Felipe Franciosi <address@hidden>
> Message-Id: <address@hidden>
> [Disable migration for now, since it does not support bdrv_drain. - Paolo]

I was expecting this to mean a VMStateDescription with a
".unmigratable = 1" field, but it doesn't seem to have one.
Does it disable migration some other way?

thanks
-- PMM