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From: John Baldwin <jhb@freebsd.org>
To: freebsd-current@freebsd.org,
 lev@freebsd.org
Subject: Re: Changing timezone without reboot/restarting each service?
Date: Tue, 11 Nov 2014 13:57:40 -0500
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On Monday, November 10, 2014 7:36:19 am Lev Serebryakov wrote:
> 
>  After changing timezones in Russia (with replacing /etc/localtime
> with new file), I found that cron works in "old" timezone till
> restart. And all other services do the same, but cron is most obvious
> here :)
> 
>  Looks like libc reads timezone only once and it could not be chamged
> for process without restart (which leads to, effectivly, restart of
> whole server).
> 
>  Is it known problem? I think, it should be fixed somehow. I
> understand, that re-check timezone file on each time-related call
> could be expensive, though :(

In practice, timezone changes are very rare, so rechecking the file is
quite expensive to do.  I think having to restart processes is fine for this.

-- 
John Baldwin