From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Andres Freund <andres(at)anarazel(dot)de> |
Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Josh Berkus <josh(at)agliodbs(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: tablespaces inside $PGDATA considered harmful |
Date: | 2015-04-23 20:26:09 |
Message-ID: | CA+Tgmob+5jCELs_mb=fFHBHJJhOaE=gTkU-6Cr0rvcUrvXpnDQ@mail.gmail.com |
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Lists: | pgsql-hackers |
On Thu, Apr 23, 2015 at 3:57 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2015-04-23 15:46:20 -0400, Robert Haas wrote:
>> Well, we've made backward-incompatible changes before. Not to this
>> specific thing, but in general. I don't think there's anything
>> preventing us from doing so here, except that we don't want to annoy
>> too many users.
>
> I think the number of users that have done this, and haven't yet
> (knowing or unknowningly) been bitten by it is pretty low. In that
> scenario it seems much better to break compatibility given that it's
> pretty easy to fix during restore (just precreate the tablespace). It's
> not something you have to retest a whole application for.
>
> If you want to avoid that one error you can still do pg_dumpall
> --globals, edit and run that script, and only then restore the the
> actual databases.
But pg_upgrade automates all that, so you can't use pg_upgrade in that
case. If we add a GUC as I suggested, you can still use pg_upgrade.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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