From: Andres Freund <andres@anarazel.de>
To: pgsql-bugs@lists.postgresql.org,Michael Paquier <michael@paquier.xyz>
To: Alexander Kukushkin <cyberdemn@gmail.com>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Dmitry Dolgov <9erthalion6@gmail.com>
Subject: Re: BUG #15346: Replica fails to start after the crash
Date: Tue, 28 Aug 2018 14:08:33 +0900
Message-ID: <3B69F535-FD81-461B-97E9-657D4C99EDB4@anarazel.de> (raw)
In-Reply-To: <20180828024409.GB29157@paquier.xyz>
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<20180822175034.lnvwk5js32k6mjyz@alvherre.pgsql>
<20180823041420.GA1158@paquier.xyz>
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<CAFh8B=mYGP1J8ueHKU40Dr4bNBUPJj1rTbZ6Wpg4gR30uCRunA@mail.gmail.com>
<20180828024409.GB29157@paquier.xyz>
On August 28, 2018 11:44:09 AM GMT+09:00, Michael Paquier <michael@paquier.xyz> wrote:
>On Sat, Aug 25, 2018 at 09:54:39AM +0200, Alexander Kukushkin wrote:
>> Why the number of tuples in the xlog is greater than the number of
>> tuples on the index page?
>> Because this page was already overwritten and its LSN is HIGHER than
>> the current LSN!
>
>That's annoying. Because that means that the control file of your
>server maps to a consistent point which is older than some of the
>relation pages. How was the base backup of this node created? Please
>remember that when taking a base backup from a standby, you should
>backup the control file last, as there is no control of end backup with
>records available. So it seems to me that the origin of your problem
>comes from an incorrect base backup expectation?
Uh, where is that "control file last" bit coming from?
Andres
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To: pgsql-bugs@postgresql.org
Cc: andres@anarazel.de, michael@paquier.xyz, cyberdemn@gmail.com, alvherre@2ndquadrant.com, 9erthalion6@gmail.com
Subject: Re: BUG #15346: Replica fails to start after the crash
In-Reply-To: <3B69F535-FD81-461B-97E9-657D4C99EDB4@anarazel.de>
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