Re: pg_standby -l might destory the archived file

From: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_standby -l might destory the archived file
Date: 2009-06-02 00:39:05
Message-ID: 3f0b79eb0906011739i28361675q4e88c0648feb34e3@mail.gmail.com
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Hi,

On Mon, Jun 1, 2009 at 11:41 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Fujii Masao <masao(dot)fujii(at)gmail(dot)com> writes:
>> pg_standby can use ln command to restore an archived file,
>> which might destroy the archived file as follows.
>
> Does it matter?  pg_standby's source area wouldn't normally be an
> "archive" in the real sense of the word, it's just a temporary staging
> area between master and slave.

If so, it might be deleted after triggering the warm-standby. But, we cannot
remove it because the latest xlog file which is required for normal recovery
might exist in it. This is another undesirable scenario. Is this problem?

Regards,

--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center

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