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Re: create tablespace fails silently, or succeedsimproperly

From: Stephen Frost <sfrost(at)snowman(dot)net>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>,Dave Cramer <pg(at)fastcrypt(dot)com>,PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: create tablespace fails silently, or succeedsimproperly
Date: 2010-12-11 04:17:21
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Lists: pgsql-hackers
* Robert Haas (robertmhaas(at)gmail(dot)com) wrote:
> On Fri, Dec 10, 2010 at 10:33 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > Anybody have a problem with adopting this behavior?
> Seems a bit surprising.

Yeahh..  I'm not really sure about mkdir -p type actions from a SQL
command.  Not entirely sure why but it doesn't feel 'right' to me.  I'd
rather have PG complain "that directory doesn't exist".  It's not a
terribly strong feeling though, more of a "that's kind of suprising",
since, as you point out, PG would have to have the necessary permissions
to create the directories, and I know that it probably wouldn't on
systems that I set up, but I don't really like relying on the FS
permissions to realize something like this was happening...

At the end of the day, I think you'll get people who will see a
permission denied and go "oh, I need to grant PG rights to mkdir in /,
sure, why not", even though that might mean creating a directory on a
small root FS which will then run out of space quickly...

Just my 2c.


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