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? Thanks, Tiwei
