On Apr 30, 2013, at 8:13 PM, Tom Lane wrote:
> Appears to be sheer blather, or at least not tempered by any thoughts
> of whether it'd work in special cases.
As the author of that blog post, I'd go with option (b). :) And that lack of tempering was actually the point.
The point there was that having the tablespace directories disappear shouldn't be considered a normal operational model. (Like, for example, putting a tablespace in a RAM disk.) There's no question that you can patch the database back together if the underlying storage of a tablespace disappears, but that should be thought of as disaster recovery, not as a "oh, third time this week" operation.
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-- Christophe Pettus
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