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Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration
From: |
Michael S. Tsirkin |
Subject: |
Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration |
Date: |
Wed, 6 Oct 2021 04:36:10 -0400 |
On Wed, Oct 06, 2021 at 09:28:50AM +0100, Dr. David Alan Gilbert wrote:
> To me it feels the same as the distinction between vhost-kernel and qemu
> backended virtio that we get in net and others - in principal it's just
> another implementation.
In net it's actually like this. Same -device, a different netdev.
> A tricky part is guaranteeing the set of visible virtio features between
> implementations; we have that problem when we use vhost-kernel and run
> on a newer/older kernel and gain virtio features; the same will be true
> with vhost-user implementations.
That's not new but yes we need to work on this.
> But this would make the structure of a vhost-user implementation quite
> different.
>
> Dave
Right. That's why I'm reluctant to just add a new device type that
has special compatibility requirements.
> >
> > > > --
> > > > MST
> > > >
> > > --
> > > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
> >
> --
> Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
- [PATCH v0 2/2] vhost-user-blk-pci: add new pci device type to support vhost-user-virtio-blk, (continued)
- [PATCH v0 2/2] vhost-user-blk-pci: add new pci device type to support vhost-user-virtio-blk, Denis Plotnikov, 2021/10/04
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Michael S. Tsirkin, 2021/10/04
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Roman Kagan, 2021/10/04
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Michael S. Tsirkin, 2021/10/05
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Dr. David Alan Gilbert, 2021/10/05
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Eduardo Habkost, 2021/10/05
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Michael S. Tsirkin, 2021/10/05
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Dr. David Alan Gilbert, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Michael S. Tsirkin, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Dr. David Alan Gilbert, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration,
Michael S. Tsirkin <=
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Dr. David Alan Gilbert, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Michael S. Tsirkin, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Dr. David Alan Gilbert, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Michael S. Tsirkin, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Dr. David Alan Gilbert, 2021/10/06
- Re: [PATCH v0 0/2] virtio-blk and vhost-user-blk cross-device migration, Michael S. Tsirkin, 2021/10/06