From: Paolo Bonzini <pbonzini@redhat.com>
To: Felipe Franciosi <felipe@nutanix.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
QEMU Developers <qemu-devel@nongnu.org>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PULL 18/33] vhost-user-scsi: Introduce vhost-user-scsi host device
Date: Wed, 7 Jun 2017 14:22:24 -0400 (EDT) [thread overview]
Message-ID: <1265195474.6852496.1496859744613.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <0281E149-DE28-4D6D-80E0-1132CAB8ABDB@nutanix.com>
> > How, since there is no synchronization point between the vhost-user
> > server on the source and the destination?
>
> The idea is that the backend should both stop picking up new requests and
> also quiesce outstanding requests upon a GET_VRING_BASE vhost message.
This could be documented, but perhaps it's best to add a START_STOP
feature and message to the vhost-user protocol?
The feature then can be optional for vhost-user-net and mandatory for
vhost-user-scsi. When this is done we can remove .unmigratable.
Thanks,
Paolo
> >
> > Can you please send a version of your patch that uses .unmigratable?
>
> Sure I can do that. We can work on the migration later on.
>
> >
> > I'll send a v6 that momentarily drops vhost-scsi, but I intend to
> > include it again in the next pull request.
>
> Sounds good to me.
>
> Felipe
>
> >
> > Thanks,
> >
> > Paolo
>
>
next prev parent reply other threads:[~2017-06-07 18:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-07 15:28 [Qemu-devel] [PULL v5 00/33] Misc patches for 2017-06-01 Paolo Bonzini
2017-06-07 15:28 ` [Qemu-devel] [PULL 18/33] vhost-user-scsi: Introduce vhost-user-scsi host device Paolo Bonzini
2017-06-07 15:37 ` Peter Maydell
2017-06-07 15:39 ` Felipe Franciosi
2017-06-07 15:47 ` Peter Maydell
2017-06-07 18:26 ` Felipe Franciosi
2017-06-07 16:21 ` Paolo Bonzini
2017-06-07 16:26 ` Felipe Franciosi
2017-06-07 18:22 ` Paolo Bonzini [this message]
2017-06-07 18:30 ` Michael S. Tsirkin
2017-06-07 18:56 ` Paolo Bonzini
2017-06-08 0:31 ` Michael S. Tsirkin
2017-06-08 11:05 ` Felipe Franciosi
2017-06-08 13:33 ` Paolo Bonzini
-- strict thread matches above, loose matches on Subject: below --
2017-06-07 13:55 [Qemu-devel] [PULL v4 00/33] Misc patches for 2017-06-01 Paolo Bonzini
2017-06-07 13:55 ` [Qemu-devel] [PULL 18/33] vhost-user-scsi: Introduce vhost-user-scsi host device Paolo Bonzini
2017-06-06 14:02 [Qemu-devel] [PULL v3 00/33] Misc patches for 2017-06-01 Paolo Bonzini
2017-06-06 14:02 ` [Qemu-devel] [PULL 18/33] vhost-user-scsi: Introduce vhost-user-scsi host device Paolo Bonzini
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