From owner-freebsd-stable@FreeBSD.ORG  Wed Sep 22 09:55:07 2010
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Date: Wed, 22 Sep 2010 09:53:22 +0000 (UTC)
From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
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To: "S.N.Grigoriev" <serguey-grigoriev@yandex.ru>
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Cc: freebsd-stable@freebsd.org
Subject: Re: How to terminate a lot of jails correctly
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On Mon, 20 Sep 2010, S.N.Grigoriev wrote:

> thank you for your tip. The only drawback of that approche  is absence of
> ability to calculate a timeout. Try and error only.

Well, you could do a try-run just shutiing down all your jails by
time sh /etc/rc.d/jail stop
measuring the time it takes and maybe add a bit for extra safety?

/bz

-- 
Bjoern A. Zeeb                              Welcome a new stage of life.