> -----Original Message-----
> From: Bie, Tiwei
> Sent: Thursday, July 11, 2019 12:08 PM
> To: Yu, Jin <jin...@intel.com>
> Cc: dev@dpdk.org; Liu, Changpeng <changpeng....@intel.com>;
> maxime.coque...@redhat.com; Wang, Zhihong <zhihong.w...@intel.com>
> Subject: Re: [PATCH v2 2/2] vhost: Add vhost-user-blk example which
> support inflight
>
> On Thu, Jul 11, 2019 at 10:23:11AM +0800, Yu, Jin wrote:
> > > -----Original Message-----
> > > From: Bie, Tiwei
> > > Sent: Wednesday, July 10, 2019 3:26 PM
> > > To: Yu, Jin <jin...@intel.com>
> > > Cc: dev@dpdk.org; Liu, Changpeng <changpeng....@intel.com>;
> > > maxime.coque...@redhat.com; Wang, Zhihong
> <zhihong.w...@intel.com>
> > > Subject: Re: [PATCH v2 2/2] vhost: Add vhost-user-blk example which
> > > support inflight
> > >
> > > On Wed, Jul 10, 2019 at 06:43:56PM +0800, JinYu wrote:
> > > > A vhost-user-blk example that support inflight feature. It uses
> > > > the new APIs that introduced in the first patch, so It can show
> > > > how there APIs work to support inflight feature.
> > > >
> > > > Signed-off-by: JinYu <jin...@intel.com>
> > > > ---
> > > > V1 - add the case.
> > > > ---
> > > > examples/vhost_blk/Makefile | 67 +++
> > > > examples/vhost_blk/blk.c | 118 ++++++
> > > > examples/vhost_blk/blk_spec.h | 95 +++++
> > > > examples/vhost_blk/meson.build | 20 +
> > > > examples/vhost_blk/vhost_blk.c | 589
> ++++++++++++++++++++++++++
> > > > examples/vhost_blk/vhost_blk.h | 96 +++++
> > > > examples/vhost_blk/vhost_blk_compat.c | 193 +++++++++
> > > > 7 files changed, 1178 insertions(+) create mode 100644
> > > > examples/vhost_blk/Makefile create mode 100644
> > > > examples/vhost_blk/blk.c create mode 100644
> > > > examples/vhost_blk/blk_spec.h create mode 100644
> > > > examples/vhost_blk/meson.build create mode 100644
> > > > examples/vhost_blk/vhost_blk.c create mode 100644
> > > > examples/vhost_blk/vhost_blk.h create mode 100644
> > > > examples/vhost_blk/vhost_blk_compat.c
> > > >
> > > [...]
> > >
> > > I don't know much about SCSI yet. Could you provide some details
> > > about why vhost-SCSI doesn't work with this inflight feature?
> > We need the Qemu and vhost backend cooperate to support the inflight
> feature.
> > So if we want to make it works, we need 2 patches, one is for Qemu, the
> other is for backend.
> > Baidu has already submitted an vhost-user-blk patch to Qemu which is
> > for this feature, that's why the vhost-user-blk example can support this
> feature.
>
> So, we can't do it in vhost_scsi example just because we don't have the
> corresponding support in QEMU? Technically, is it possible to enable the
> inflight feature support for vhost-user-scsi in QEMU?
>
Sorry for latency.
Yes. I think it's possible to enable this feature in vhost scsi , as you
mentioned before this feature is
generic for virtio.
> Thanks,
> Tiwei
Thanks,
Jin
