supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit
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From: Charlie Brady <charlieb-supervision@budge.apana.org.au>
Cc: supervision@list.skarnet.org
Subject: Re: Option for runsv/runsvdir to specify how many times to restart a service in a certain time period before giving up?
Date: Mon, 30 Oct 2006 09:51:43 -0500 (EST)	[thread overview]
Message-ID: <Pine.LNX.4.64.0610300949510.11426@e-smith.charlieb.ott.istop.com> (raw)
In-Reply-To: <20061030135834.GA26907@skarnet.org>


On Mon, 30 Oct 2006, Laurent Bercot wrote:

> Another approach to the throttle feature that doesn't require notification
> from runit would be to have a short-lived program, designed to be called in
> the finish script, that stores its information (last calling time ans such)
> in the filesystem. Maybe it's what you were thinking about. But I'm not
> sure how to make it reliable; storing short-lived information in the
> filesystem is very error-prone, that's the .pid way, which is precisely
> what supervision tools were designed to avoid.

The problem with pid files is race conditions. I don't see that as being a 
problem here, as there is a single thread of execution between ./run and 
./finish. ./finish should be able to reliably store whatever state it 
needs in the file system. Or do you see something which I don't?


  parent reply	other threads:[~2006-10-30 14:51 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-28 19:26 Alex Smith
2006-10-30 10:49 ` Alex Efros
2006-10-30 10:50   ` Alex Efros
2006-10-30 12:13   ` Dražen Kačar
2006-10-30 12:30     ` Alex Efros
2006-10-30 13:38       ` Laurent Bercot
2006-10-30 13:42         ` Alex Efros
2006-10-30 13:58           ` Laurent Bercot
2006-10-30 14:24             ` Alex Efros
2006-10-30 14:51             ` Charlie Brady [this message]
2006-10-31  0:48               ` Laurent Bercot
2006-10-30 18:49         ` Vincent Danen
2006-10-30 21:28           ` Alex Efros
2006-10-30 21:30             ` Vincent Danen
2006-10-30 17:52       ` Alex Smith
2006-10-30 21:41         ` Alex Efros
2006-11-01 12:01           ` Gerrit Pape
2006-11-01 12:17             ` Alex Efros
2006-10-30 18:49       ` Dražen Kačar
2006-10-30 22:03         ` Alex Efros

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