Re: Handing off SLRU fsyncs to the checkpointer

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
Cc: Jakub Wartak <Jakub(dot)Wartak(at)tomtom(dot)com>, "alvherre(at)2ndquadrant(dot)com" <alvherre(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Handing off SLRU fsyncs to the checkpointer
Date: 2020-09-25 00:05:10
Message-ID: 1814414.1600992310@sss.pgh.pa.us
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Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> Tom, do you have any thoughts on ShutdownCLOG() etc?

Hm, if we cannot reach that without first completing a shutdown checkpoint,
it does seem a little pointless.

It'd likely be a good idea to add a comment to CheckPointCLOG et al
explaining that we expect $what-exactly to fsync the data we are writing
before the checkpoint is considered done.

regards, tom lane

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