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Re: FAM-2.6.10, Imon, NFS, Solaris 7

To: Rolf Sponsel <Rolf.Sponsel@xxxxxxxxxxx>
Subject: Re: FAM-2.6.10, Imon, NFS, Solaris 7
From: Michael Wardle <michael.wardle@xxxxxxxxxx>
Date: 30 Apr 2003 09:57:40 +1000
Cc: fam@xxxxxxxxxxx
In-reply-to: <3EAEA1A6.82BDF266@xxxxxxxxxxx>
Organization: Adacel Technologies
References: <3EADD30B.AC6A6042@xxxxxxxxxxx> <1051580343.2407.9.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <3EAEA1A6.82BDF266@xxxxxxxxxxx>
Sender: fam-bounce@xxxxxxxxxxx
Hi Rolf

LOCAL FILES
If your system does not have a supported kernel monitor (currently only 
IMon from IRIX and DNotify from Linux are supported), FAM will use a
polling mode, which causes FAM to check whether a file's attributes have
changed using lstat() every few seconds.

You are correct in saying that your output means you will get polling
mode.

Maybe one day somebody will see whether we could use Solaris's /dev/poll
feature in FAM.

REMOTE FILES
When a file on an NFS filesystem is monitored, the local FAM daemon
(famd) attempts to contact the FAM daemon on the NFS server to get
updates.  If the local famd can't communicate with the remote famd, it
polls the file every few (six by default) seconds.

The monitor FAM was configured and built for does not affect the way it
handles monitoring of remote (NFS) files.

I hope this clears things up for you. :-)

-- 
Michael Wardle <michael.wardle@xxxxxxxxxx>
Adacel Technologies


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