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Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualize
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target |
Date: |
Mon, 28 Jan 2013 15:36:09 +0200 |
On Mon, Jan 28, 2013 at 02:29:23PM +0100, Paolo Bonzini wrote:
> Il 28/01/2013 14:11, Michael S. Tsirkin ha scritto:
> > > I asked for a standalone device because the configuration mechanism
> > > (configfs vs. command-line) and the feature set are completely
> > > different. Unlike virtio-net, it's not possible to switch one to the
> > > other at run time.
> >
> > Exactly the same applies to any other frontend option.
> > For example if you have two qemu instances with
> > different num_queues values you can not migrate one
> > to the other.
> > So in this sense it is not different from any other
> > frontend option, right?
>
> Indeed, in this sense it is not.
>
> Actually in this case migrating one to the other could succeed, and make
> all disks disappear on the destination (because of the different
> configuration mechanism). That however could be overcome with vhost=on
> registering a migration blocker.
Or better add a subsection if vhost is set: vhost=on to vhost=on
can migrate, right?
> I won't really block the patch with the vhost=on/off frontend option if
> it is properly done (e.g. the QEMU SCSI bus should not be created for
> vhost=on) and minimally invasive to the non-vhost code.
>
> Paolo
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Michael S. Tsirkin, 2013/01/17
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Nicholas A. Bellinger, 2013/01/17
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Michael S. Tsirkin, 2013/01/21
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Paolo Bonzini, 2013/01/28
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Michael S. Tsirkin, 2013/01/28
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Paolo Bonzini, 2013/01/28
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Paolo Bonzini, 2013/01/28
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Michael S. Tsirkin, 2013/01/28
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Nicholas A. Bellinger, 2013/01/29
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Paolo Bonzini, 2013/01/29
- Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Nicholas A. Bellinger, 2013/01/29
Re: [Qemu-devel] [PATCH 0/5] vhost-scsi: Add support for host virtualized target, Anthony Liguori, 2013/01/21