Thanks Lars and Dejan for your feedback.
I have started reading the lrmd source.
One thing I am worried about is that if I give a PID to lrmd, how will lrmd
monitor it?
My RA is a shell script that forks off a daemon. If I give this daemon PID to
lrmd does lrmd start a thread to monitor PID?
I don't think that lrmd would get a SIGCHLD in my case.
Thanks,
Bob
----- Original Message ----
From: Lars Marowsky-Bree <l...@novell.com>
To: High-Availability Linux Development List <linux-ha-dev@lists.linux-ha.org>
Sent: Fri, May 28, 2010 8:49:28 AM
Subject: Re: [Linux-ha-dev] Monitoring Process Death
On 2010-05-21T12:12:12, Bob Schatz <bsch...@yahoo.com> wrote:
> I think the basic requirements are:
>
> 1.When a process starts it registers itself with a kernel component. This
> registration also gets passed an action.
The easiest way would be for the RA to register pids to be monitored to
lrmd, and have lrmd generate failed monitor messages if one of them goes
away.
(Of course, the RA needs to unregister them as part of the stop
operation!)
No kernel changes are necessary, this can all be implemented via a patch
to lrmd and some supporting shell funcs.
Regards,
Lars
--
Architect Storage/HA, OPS Engineering, Novell, Inc.
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
"Experience is the name everyone gives to their mistakes." -- Oscar Wilde
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