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From: Coiby Xu <coiby.xu@gmail.com>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: kwolf@redhat.com, bharatlkmlkvm@gmail.com, qemu-devel@nongnu.org
Subject: Re: [PATCH v2 3/5] a standone-alone tool to directly share disk image file via vhost-user protocol
Date: Fri, 17 Jan 2020 16:12:24 +0800
Message-ID: <CAJAkqrVhvi-8MZ-mPjZ67yfjOaick5Gu_g3GxYAeYvH3Cp6QVw@mail.gmail.com> (raw)
In-Reply-To: <20200116140429.GJ163546@stefanha-x1.localdomain>

Excellent! I will add an option (or object property) for
vhost-user-blk server oject which will tell the daemon process to exit
when the client disconnects, thus "make check-qtest" will not get held
by this daemon process. After that since Kevin's qemu-storage-daemon
support "-object" option
(https://patchew.org/QEMU/20191017130204.16131-1-kwolf@redhat.com/20191017130204.16131-3-kwolf@redhat.com/)
and vhost-user-server is a user-creatable QOM object, it will work out
of the box.

I'm curious when will be formal version of qemu-storage-daemon
finished so I can take advantage of it? Or should I apply the RFC
PATCHes to my working branch directly and submit them together with
the patches on vhost-user-blk server feature when posting v3?



On Thu, Jan 16, 2020 at 10:04 PM Stefan Hajnoczi <stefanha@redhat.com> wrote:
>
> On Tue, Jan 14, 2020 at 10:06:18PM +0800, Coiby Xu wrote:
> > vhost-user-blk can have played as vhost-user backend but it only supports raw file and don't support VIRTIO_BLK_T_DISCARD and VIRTIO_BLK_T_WRITE_ZEROES operations on raw file (ioctl(fd, BLKDISCARD) is only valid for real block device).
> >
> > Signed-off-by: Coiby Xu <coiby.xu@gmail.com>
> > ---
> >  qemu-vu.c | 264 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 264 insertions(+)
> >  create mode 100644 qemu-vu.c
>
> Kevin has been working on qemu-storage-daemon, a tool for running NBD
> exports, block jobs, and other storage features that are not part of a
> guest.  I think qemu-storage-daemon would be the appropriate tool for
> running vhost-user-blk servers.  A dedicated binary is not necessary.
>
> Stefan



--
Best regards,
Coiby


  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-14 14:06 [PATCH v2 0/5] vhost-user block device backend implementation Coiby Xu
2020-01-14 14:06 ` [PATCH v2 1/5] vhost-user block device backend Coiby Xu
2020-01-16 13:51   ` Stefan Hajnoczi
2020-01-16 14:20     ` Kevin Wolf
2020-02-14  3:07     ` Coiby Xu
2020-01-16 13:56   ` Kevin Wolf
2020-02-20  7:04     ` Coiby Xu
2020-02-20  9:30     ` Coiby Xu
2020-01-14 14:06 ` [PATCH v2 2/5] extend libvhost to support IOThread Coiby Xu
2020-01-14 14:06 ` [PATCH v2 3/5] a standone-alone tool to directly share disk image file via vhost-user protocol Coiby Xu
2020-01-16 14:04   ` Stefan Hajnoczi
2020-01-17  8:12     ` Coiby Xu [this message]
2020-01-17 10:11       ` Kevin Wolf
2020-01-31 16:42         ` Coiby Xu
2020-02-02  9:33           ` Kevin Wolf
2020-02-13  1:00             ` Coiby Xu
2020-01-14 14:06 ` [PATCH v2 4/5] new qTest case for the vhost-user-blk device backend Coiby Xu
2020-01-14 14:06 ` [PATCH v2 5/5] building configuration files changes Coiby Xu
2020-01-16 11:07   ` Kevin Wolf

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