Subject: Re: kqueue and NFS
To: Jaromir Dolecek <firstname.lastname@example.org>
From: Jason R Thorpe <email@example.com>
Date: 09/28/2002 12:00:59
On Sat, Sep 28, 2002 at 08:42:24PM +0200, Jaromir Dolecek wrote:
> To make the kevent facility [*] really working properly, the NFS client
> code need to know about any file changes. This can be
> done for local system (which is easy, and I have already changes to
> do this), but the file can also change on the server by different
NFS has often had trouble with "unix semantics".
The reason that there is no callback mechanism is because NFS is stateless
(well, it's supposed to be anyway :-) .. the server doesn't know which
clients are currently active.
I don't think polling is right, either. That will generate a lot of
annoying network traffic.
Instead, I would say "only support kevents for local writes of the file",
and document this behavior for the NFS case.
-- Jason R. Thorpe <firstname.lastname@example.org>