Horton

Re: should frontend tools use syncfs() ?

Justin Pryzby <pryzby@telsasoft.com>

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From: Justin Pryzby <pryzby@telsasoft.com>
To: Nathan Bossart <nathandbossart@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>, Thomas Munro <thomas.munro@gmail.com>, David Steele <david@pgmasters.net>, Fujii Masao <masao.fujii@oss.nttdata.com>, Bruce Momjian <bruce@momjian.us>, Paul Guo <guopa@vmware.com>, Tom Lane <tgl@sss.pgh.pa.us>, Michael Brown <michael.brown@discourse.org>, pgsql-hackers@postgresql.org
Date: 2023-09-01T18:19:13Z
Lists: pgsql-hackers 
On Fri, Sep 01, 2023 at 11:08:51AM -0700, Nathan Bossart wrote:
> > This should probably give a distinct error when syncfs is not supported
> > than when it's truely recognized.
> 
> Later versions of the patch should have this.

Oops, right.

> > The patch should handle pg_dumpall, too.
> 
> It looks like pg_dumpall only ever fsyncs a single file, so I don't think
> it is really needed there.

What about (per git grep no-sync doc) pg_receivewal?

-- 
Justin

Commits

  1. Adjust documentation for syncfs().

  2. Improve the naming in wal_sync_method code.

  3. Allow using syncfs() in frontend utilities.

  4. Add support for syncfs() in frontend support functions.

  5. Make enum for sync methods available to frontend code.

  6. Move PG_TEMP_FILE* macros to file_utils.h.

  7. Change client-side fsync_fname() to report errors fatally