Re: [virtio-dev] [PATCH v3 0/2] virtio-fs: add virtio file system device

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Jun 24, 2019 at 01:23:18PM +0100, Stefan Hajnoczi wrote:
> On Tue, Jun 18, 2019 at 09:30:54PM -0400, Michael S. Tsirkin wrote:
> > On Wed, Feb 20, 2019 at 12:46:11PM +0000, Stefan Hajnoczi wrote:
> > > v3:
> > >  * Remove notifications virtqueue, it's unimplemented and can be added when
> > >    needed [Miklos]
> > >  * Add Security Considerations and Live Migration Considerations sections
> > >    [Michael]
> > > v2:
> > >  * Clean up core virtio file system device spec
> > >  * Add DAX window
> > > 
> > > These patches add the virtio file system device, which is based on Linux FUSE
> > > but includes the DAX window extension.  Similar to virtio-scsi, which
> > > transports SCSI commands, virtio-fs transports FUSE requests and the protocol
> > > documentation is not duplicated here.
> > 
> > I think I prefer virtio-fuse as a name. Let's be a bit more
> > specific: we might want to add more filesystem devices later on.
> 
> virtio-fs is not FUSE.  Existing FUSE file system daemons cannot be
> used.

Right.

> It would be confusing to call it FUSE.  The wire protocol is indeed
> based on FUSE but from a user perspective it's a completely different
> system.

I agree.

> The virtio-fs device extends the FUSE protocol with the
> virtualization-specific DAX window (and the in-development shared
> metadata versioning data structures that will be added to a future
> spec).
> 
> Finally, users are likely to be confused and associate virtio-fuse with
> outdated FUSE issues that have long since been solved.  virtio-fs
> performs really well and that's not something that people associate with
> FUSE :-).
> 
> For these reasons I think we should continue to call it virtio-fs.
> 
> Stefan

I just wish we came up with something more specific than
"a filesystem". Any ideas?

-- 
MST

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