Re: Renaming of pg_xlog and pg_clog
Alvaro Herrera <alvherre@2ndquadrant.com>
From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Michael Paquier <michael.paquier@gmail.com>
Cc: Andres Freund <andres@anarazel.de>, Peter Eisentraut <peter.eisentraut@2ndquadrant.com>, Tom Lane <tgl@sss.pgh.pa.us>, Magnus Hagander <magnus@hagander.net>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2016-08-27T17:56:08Z
Lists: pgsql-hackers
Michael Paquier wrote: > On Sat, Aug 27, 2016 at 6:34 AM, Andres Freund <andres@anarazel.de> wrote: > > On 2016-08-26 17:31:14 -0400, Peter Eisentraut wrote: > >> I agree with all that. But the subject line is specifically about > >> moving pg_xlog. So if your opinion is that we shouldn't move pg_xlog, > >> then that is noted. But if we were to move it, we can think about a > >> good place to move it to. > > > > I think it's probably worth moving pg_xlog, because the benefit also > > includes preventing a few users from shooting themselves somewhere > > vital. That's imo much less the case for some of the other moves. But I > > still don't think think a largescale reorganization is a good idea, > > it'll just stall and nothing will happen. > > OK, so let's focus only on the renaming mentioned in $subject. So far > as I can see on this thread, here are the opinions of people who > clearly gave one: > - Rename them, hard break is OK: Michael P, Bruce, Stephen (depends on > David's input), Magnus > - Rename them, hard break not OK: Fujii-san (perhaps do nothing?) > - Do nothing: Simon (add a README), Tom, Peter E I'm for renaming too, but I'd go with Peter E's suggestion: move pg_xlog to something like $PGDATA/var/wal or $PGDATA/srv/wal or something like that. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
Commits
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Rename "pg_clog" directory to "pg_xact".
- 88e66d193fba 10.0 landed
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Improve error reporting in pg_upgrade's file copying/linking/rewriting.
- f002ed2b8e45 10.0 cited