Re: Changing the state of data checksums in a running cluster

Daniel Gustafsson <daniel@yesql.se>

From: Daniel Gustafsson <daniel@yesql.se>

To: Bernd Helmle <mailings@oopsware.de>

Cc: Tomas Vondra <tomas@vondra.me>, Michael Paquier <michael@paquier.xyz>, Michael Banck <mbanck@gmx.net>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2025-08-16T19:34:03Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Use correct datatype for PID
- 0ca1b3010597 19 (unreleased) landed
Improve comments in online checksums code
- cd857dec0e0a 19 (unreleased) landed
Fix checksum state transition during promotion
- 5fee7cab1b87 19 (unreleased) landed
Fix regex searching for page verification failures in tests
- 486b9a9b9eb4 19 (unreleased) landed
Apply data-checksum worker throttling parameters
- 9a39056c418c 19 (unreleased) landed
Skip WAL for unlogged main fork during online checksum enable
- 2018bd616790 19 (unreleased) landed
Revert "Get rid of WALBufMappingLock"
- c13070a27b63 19 (unreleased) cited
Get rid of WALBufMappingLock
- bc22dc0e0ddc 18.0 cited
Improve grammar of options for command arrays in TAP tests
- ce1b0f9da03e 18.0 cited

Attachments

v20250816-0001-Online-enabling-and-disabling-of-data-chec.patch (application/octet-stream) patch v20250816-0001

Attached is a rebase on top of the func.sgml changes which caused this to no
longer apply.

This version is also substantially updated with a new injection point based
test suite, fixed a few bugs (found by said test suite), added checkpoint to
disabling checksums, code cleanup, more granular wait events, comment rewrites
and additions and more smaller cleanups.

--
Daniel Gustafsson