Re: [Xen-devel] 9p file system for xen

[Linda <lindaj@xxxxxxxx>]

On 12/1/2015 7:46 AM, Wei Liu wrote:
> On Tue, Dec 01, 2015 at 07:37:43AM -0700, Linda wrote:
> > On 12/1/2015 4:47 AM, Wei Liu wrote:
> > > On Mon, Nov 30, 2015 at 12:19:18PM -0500, Neil Sikka wrote:
> > > > Hi Wei, could you please explain why/how you would have done the project
> > > > differently now and why these patches are not "good"? From my conversation
> > > > with Linda, I understood that her code is "Independent of virtio except the
> > > > 9pvirtio specific code, which is used extensively."
> > > I need to implement a xen transport for 9pfs. Linda was essentially
> > > doing the same. But she didn't specify the canonical protocol between
> > > frontend and backend.
> > For my own edification:  In the interests of the limited time of my
> > internship, we decided I shouldn't do the initialization using the xen
> > toolstack.  Were there are other expediencies that I'm unaware of?
> It's not about toolstack. Toolstack merely sets up xenstore nodes
> according to the protocol.
>
> > I tried to follow the xen handshaking protocol between front and back end at
> > startup.
> Yes, that's the right direction. Following existing convention is good
> enough for an intern project. Specifying the protocol in detailed is not
> the requirement for a prototype.
>
> But in the end to upstream xen-9pfs a canonical protocol is required.  A
> blessed version of protocol needs to be committed to xen.git tree.  We
> have a bunch of those in xen.git/xen/include/public/io/ directory.
>
> Wei.
Thank you.

L
> > Thanks.
> >
> > Linda
> > > As for "9pvirtio specific code", I think there is misunderstanding
> > > because though a lot of files in QEMU are prefixed with virtio they are
> > > actually not specific to virtio at all. I think the "independent of
> > > virtio ..." part was referring to the new transport she wrote.
> > >
> > > Wei.

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