Re: directory notification.

[Terje Malmedal <terje.malmedal@usit.uio.no>]

[Stephen Rothwell]
> On Tue, 4 Nov 2003 18:44:29 +0100 Terje Malmedal <terje.malmedal@usit.uio.no> wrote:
>> 
>> Modifications of existing files via NFS are not picked up by the
>> directory notification system.
>> 
>> kernel is 2.4.22, I'm testing with the example program from
>> /usr/src/linux/Documentation/dnotify.txt
>> 
>> I get notifications on the following: 
>> nfs-server# echo hello >> existing.file   
>> nfs-client# echo hello > new.file
>> 
>> But not on this: 
>> nfs-client# echo hello >> existing.file 
>> 
>> I guess the problem of detecting changes done via NFS is similar to
>> the problem of multiple hard-links to the same file, which is
>> documented as not supported.
>> 
>> Is this something that can be fixed, or is it going to be too
>> difficult to go from NFS-handle and back to the directory it came
>> from?

> Are you running the program that expects notifies on the NFS server or the
> client? 

On the server of course.

> If on the client, you will never get notifies for modifications
> made on the server or other clients.  If on the server, it needs looking
> at as you should get the notifies (I think - it has been a while since I
> last looked at the NFS server code).

It would be very nice if this could be fixed. 

-- 
 - Terje
malmedal@usit.uio.no