Magnus Hagander <mag...@hagander.net> writes:
> Someone just reported a problem when they had created a new tablespace
> inside the old data directory. I'm sure there can be other issues
> caused by this as well, but this is mainly a confusing scenario for
> people now.
> As there isn't (as far as I know at least) any actual *point* in
> creating a tablespace inside the main data directory, should we
> perhaps disallow this in CREATE TABLESPACE? Or at least throw a
> WARNING if one does it?
It could be pretty hard to detect that in general (think symlinks
and such). I guess if we're just trying to print a helpful warning,
we don't have to worry about extreme corner cases. But what exactly
do you have in mind --- complain about any relative path? Complain
about absolute paths that have a prefix matching the DataDir?
regards, tom lane
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