Re: 9p file system for xen

[Wei Liu <wei.liu2@citrix.com>]

On Mon, Nov 16, 2015 at 08:02:35PM -0700, Linda wrote:
> Hi Wei,
> 
> On 11/16/2015 10:35 AM, Wei Liu wrote:
> >On Mon, Nov 16, 2015 at 10:22:41AM -0700, Linda wrote:
> ...
> >>
> >>The bug is a timing issue:  During virtio's probe step, on the front end, it
> >>initialized the mount path.  Since at that time, the front end doesn't have
> >>access to the back end's entries in xenstore (AFIACT), I either need to put
> >>it in xenstore prior to starting, or move the access to this information to
> >>later in the initialization.
> >>
> >>Note, I used the past tense on what virtio did, as of last summer: when I
> >>looked at it last week, it appears to have changed since I first used it as
> >>a template.    I need to investigate this further.
> >>
> >OK.
> >
> >>Finally, I've made no provision for how to mount more than one file system
> >>for the same guest.  This is a feature that virtio provides for in the
> >>front-end code (as do I), but I am unclear about how this works in the
> >>back-end or at the user level.  This is what I suspect will be different in
> >>xen, and I'd like some input on what it should look like.
> >I think this comes down to how your design the xenstore protocol to
> >represent different mount points.
> And just reading this gave me the answer I need.
> >
> >>>The code freeze for next release is going to be end of March next year.
> >>>As software engineer often overestimates the progress he or she can
> >>>make, I would say we shall aim for getting something working as soon as
> >>>possible. Get the design straight and something clean by the end of this
> >>>year would be good.
> >>Sounds good to me.  I'm happy to keep working on this.  I just didn't want
> >>to find myself in a position where I needed to pass this on to someone else,
> >>but I didn't give that person enough time to finish what I'd done.
> >Depending on the situation, I can take over the code. You've done enough
> >for this project and we don't really want you to work on it for free --
> >we don't have provision for more funding at the moment.
> Understood.
> >If we end up taking over the project, we will still attribute the
> >initial implementation to you.
>     Thanks.  Julien said essentially the same thing.  Right now, I'm working
> on average, less than 10 hours/week, so it's enough to keep my mind engaged,
> but it doesn't interfere with anything else.
>     I will be working for pay, in some capacity (TBD), after the first of
> the year.   Right now, I'm working to line things up.
>     Unless something changes drastically, I'll continue to work on this
> until the end of the year.  I'll start by cleaning things up, and keep it
> that way, so no matter what happens, you, or Julien, can take it over.
> 

Linda, I will be on vacation early December until early January. I do
want to be do some preparatory work before I leave. Can you just post
what you have to xen-devel? Your code doesn't need to be perfect. I can
handle the rest.

Wei.

> Linda
> >
> >Wei.
> >
>