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From: Stef Walter <stef-list@memberwebs.com>
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To: Michael Scheidell <scheidell@secnap.net>
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Date: Thu,  6 Aug 2009 16:11:18 +0000 (UTC)
Cc: freebsd-jail@FreeBSD.org
Subject: Re: crontab hanging won't die on SIGTERM in jail
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Michael Scheidell wrote:
> anyone having problems during an in jail shutdown with crontab hanging?
> I have seen this in 6.4 and 7.1, on i386 and amd64.
> I don't remember problems with 6.3

I see this same problem in certain jails. A jail that has this problem
does it consistently, jails without the problem (on the same machine,
same FreeBSD userland/kernel) don't have the problem consistently.

In these cases, sending cron the TERM signal just doesn't do anything.

You have to wait for at least one minute after jail startup for cron to
get into this unTERMable state.

I haven't had time to do further debugging on this, but I figured I'd
pitch in with what I've experienced.

Cheers,

Stef