答复: BUG #15207: In crash recovery, SyncDataDirectory() will fall into recursion trap

I have got the history of this issue.

Thanks.

Br.
Bret
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发件人: Michael Paquier<mailto:michael(at)paquier(dot)xyz>
发送时间: 2018年5月23日 22:03
收件人: Tom Lane<mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us>
抄送: bret(dot)shao(at)outlook(dot)com<mailto:bret(dot)shao(at)outlook(dot)com>; pgsql-bugs(at)lists(dot)postgresql(dot)org<mailto:pgsql-bugs(at)lists(dot)postgresql(dot)org>
主题: Re: BUG #15207: In crash recovery, SyncDataDirectory() will fall into recursion trap

On Wed, May 23, 2018 at 09:36:33AM -0400, Tom Lane wrote:
> Offhand, I think we do not support tablespaces that are physically inside
> the data directory, either.

pg_upgrade and pg_basebackup work funnily in such cases.

> I think there's been some discussion of having CREATE TABLESPACE try to
> detect and reject such cases. But it would be easy enough to fool it
> (through symlinks, variant path spellings, etc), that people haven't been
> excited about adding such a check.

33cb8ff6 has added a warning when doing this operation. Here is the
related thread:
https://www.postgresql.org/message-id/CA%2BTgmobZLyLU8tFCbMqbjMWB6t%2B%3DERaDo820uQEJCVAQK_Paow%40mail.gmail.com
--
Michael