Re: [Xen-devel] [PATCH] Add an ioctl interface for simple xenstore access

[Muli Ben-Yehuda <mulix@xxxxxxxxx>]

On Sat, Mar 18, 2006 at 11:56:27AM -0600, Anthony Liguori wrote:

> I'm not sure how one would express the transaction semantics of xenstore 
> via a virtual filesystem.

file open - transaction begin, file close - transaction commit, if you
need multiple "files" in a single transaction, you make this a special
file. Not very elegant, but as plan9 shows us, nearly anything can be
represented as a file{system}.

> There is also an awkward mapping between some 
> of the attributes of xenstore (for instance, there's no way to determine 
> if an attribute returned by a list is a directory or not)

If it has "sub attributes", represent it as a directory.

> If you remember, I had written a fuse filesystem front-end for xenstore 
> at one point.  It's definitely neat, but I think we would have to make 
> some changes to Xenstore for it to really work out well.

Ok. I freely acknowledge knowing very little about xenstore and how to
best represent its data. I do however know what the review comments
for upstream inclusion of any new ioctls would be like ;-)

Cheers,
Muli
-- 
Muli Ben-Yehuda
http://www.mulix.org | http://mulix.livejournal.com/


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