From: Martin DeMello <martindemello@...>
Date: 2006-11-22T19:49:29+09:00
Subject: inotify over nfs

I had a happily-running inotify daemon monitoring file creation and
deletion that broke when we moved to a multiple machine + NFS setup.
Apparently inotify doesn't work over NFS, but it *does* if you have
the watcher on the same machine as the process creating or deleting
the files, which is actually good enough for me.

So here's my current idea - I just wanted to run it by the list since
I know people here have done related stuff (Ara, I'm looking at you
:)):

* Have an inotify process per machine that watches for file creation
and deletion, and sends the messages to a Drb server on a single box.
* Have the Drb server field messages and put them into an in-memory queue
* Have a separate thread in the server program that wakes up every 15s
or so and drains the queue if needed

Any potential pitfalls? Any better way of doing this?

martin