I can see that it should be updated in the devel manual page: http://www.postgresql.org/docs/devel/static/pgupgrade.html
Thanks,
Patrick
From: Bruce Momjian <bruce@momjian.us> To: Patrick Dung <patrick_dkt@yahoo.com.hk> Cc: Stephen Frost <sfrost@snowman.net>; "pgsql-general@postgresql.org" <pgsql-general@postgresql.org>; Ivan Voras <ivoras@freebsd.org>; Tom Lane <tgl@sss.pgh.pa.us> Sent: Saturday, October 5, 2013 10:19 PM Subject: Re: [GENERAL] Major upgrade of PostgreSQL and MySQL
On Sat, Sep 14, 2013 at 01:54:40AM +0800, Patrick Dung wrote:
> 1. In the past, I have an impression that it requires double of the database > size. > Because the manual present in a way that it 'must' need to hold the old and new > database cluster. > But it does not mention the benefit of using hard links to save disk space and > speed. > I think the documentation could put a note at the beginning for new users. > > 2. Also I think the documentation should provide more info for users that use > packages. > Most likely the system would do dependency checking and may refuse two install > two versions at the same time. > So uses need to install the new version in another location. > More documentation should be provided for this part (e.g for users using Linux > rpm/deb or FreeBSD ports). > > 3. But the way, if users is using Windows, is the link option still works?
I have applied the attached documentation addition to mention that link mode uses less disk space, and that junction points are used on Windows. Backpatched to 9.3.