[libvirt] [PATCH] virtio-blk: deprecate SCSI passthrough

[Paolo Bonzini]

On 13/12/19 15:46, Stefan Hajnoczi wrote:
> The Linux virtio_blk.ko guest driver is removing legacy SCSI passthrough
> support.  Deprecate this feature in QEMU too.
> 
> Signed-off-by: Stefan Hajnoczi <stefanha at redhat.com>
> ---
>  qemu-deprecated.texi | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
> index 4b4b7425ac..ef94d497da 100644
> --- a/qemu-deprecated.texi
> +++ b/qemu-deprecated.texi
> @@ -285,6 +285,17 @@ spec you can use the ``-cpu rv64gcsu,priv_spec=v1.9.1`` command line argument.
>  
>  @section Device options
>  
> + at subsection Emulated device options
> +
> + at subsubsection -device virtio-blk,scsi=on|off (since 5.0.0)
> +
> +The virtio-blk SCSI passthrough feature is a legacy VIRTIO feature.  VIRTIO 1.0
> +and later do not support it because the virtio-scsi device was introduced for
> +full SCSI support.  Use virtio-scsi instead when SCSI passthrough is required.
> +
> +Note this also applies to ``-device virtio-blk-pci,scsi=on|off'', which is an
> +alias.
> +
>  @subsection Block device options
>  
>  @subsubsection "backing": "" (since 2.12.0)
> 

Reviewed-by: Paolo Bonzini <pbonzini at redhat.com>