From: Andres Freund <andres@anarazel.de>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Christoph Berg <myon@debian.org>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: UCT (Re: pgsql: Update time zone data files to tzdata release 2019a.)
Date: Tue, 4 Jun 2019 08:53:30 -0700
Message-ID: <20190604155330.rtx4qwqzkispsa3x@alap3.anarazel.de> (raw)
In-Reply-To: <65800.1559662051@sss.pgh.pa.us>
References: <E1hK8qL-0005yH-VX@gemulon.postgresql.org>
<20190604085735.GD24018@msg.df7cb.de>
<65800.1559662051@sss.pgh.pa.us>
Hi,
On 2019-06-04 11:27:31 -0400, Tom Lane wrote:
> Hm, I don't have a Debian machine at hand, but I'm unable to
> reproduce this using macOS or RHEL. I tried things like
>
> $ TZ=UTC initdb
> ...
> selecting default timezone ... UTC
> ...
On debian unstable that's what I get too, both with system and PG
tzdata.
> BTW, does Debian set up /etc/timezone as a symlink, by any chance,
> rather than a copy or hard link? If it's a symlink, we could improve
> matters by teaching identify_system_timezone() to inspect it.
On my system it's a copy (link count 1, not a symlink). Or did you mean
/etc/localtime? Because that's indeed a symlink.
If I set the system-wide default, using dpkg-reconfigure -plow tzdata,
to UTC I *do* get Etc/UTC.
root@alap4:/home/andres/src/postgresql# cat /etc/timezone
Etc/UTC
root@alap4:/home/andres/src/postgresql# ls -l /etc/timezone
-rw-r--r-- 1 root root 8 Jun 4 15:44 /etc/timezone
selecting default timezone ... Etc/UTC
This is independent of being built with system or non-system tzdata.
Enabling debugging shows:
selecting default timezone ... symbolic link "/etc/localtime" contains "/usr/share/zoneinfo/Etc/UCT"
TZ "Etc/UCT" gets max score 5200
Etc/UCT
Greetings,
Andres Freund
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To: pgsql-committers@postgresql.org
Cc: andres@anarazel.de, tgl@sss.pgh.pa.us, myon@debian.org, pgsql-hackers@postgresql.org
Subject: Re: UCT (Re: pgsql: Update time zone data files to tzdata release 2019a.)
In-Reply-To: <20190604155330.rtx4qwqzkispsa3x@alap3.anarazel.de>
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