Re: 9p file system for xen

[Linda <lindaj@jma3.com>]

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.
>>>