Сообщения WARNING: File 'pg_multixact/...' was stored as non-datafile, but looks like it is

[xinferum]

Добрый день.

PostgreSQL 15.1 (ванильный), pg_probackup-15 2.5.11.

Мы на одном из тестовых контуров, с довольно нагруженной бд, столкнулись с тем, что после обновления с 14-й на 15-ю мажорную версии PostgreSQL во время проверочного ручного запуска бекапа начали сыпаться сообщения следующего вида:

WARNING: File 'pg_multixact/members/3994' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/members/3995' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/members/3996' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/members/3997' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/members/3998' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/members/3999' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/offsets/1064' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/offsets/1065' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/offsets/1066' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/offsets/1067' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/offsets/1068' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/offsets/1069' was stored as non-datafile, but looks like it is
WARNING: File 'pg_multixact/offsets/1070' was stored as non-datafile, but looks like it is

То есть pg_probackup стал писать WARNING на каждый файл из директорий pg_multixact/members/ и pg_multixact/offsets/.
Проверили по логам - на PostgreSQL 14 тоже возникали такие сообщения с момента обновления pg_probackup на версию 2.5.11, до этого была установлена 2.5.8 и с ней в логе таких WARNING нет.

Поискал по коду - начиная с версии 2.5.11 был введен следующий код проверки (впервые он появляется еще в 2.5.10, но эта версия, насколько мне известно, в релиз не была выпущена):

pg_probackup/src/catalog.c

Lines 1145 to 1161 in b90273f

	if (file->external_dir_num == 0 && S_ISREG(file->mode))
	{
	bool is_datafile = file->is_datafile;
	set_forkname(file);
	if (is_datafile != file->is_datafile)
	{
	if (is_datafile)
	elog(WARNING, "File '%s' was stored as datafile, but looks like it is not",
	file->rel_path);
	else
	elog(WARNING, "File '%s' was stored as non-datafile, but looks like it is",
	file->rel_path);
	/* Lets fail in tests */
	Assert(file->is_datafile == file->is_datafile);
	file->is_datafile = is_datafile;
	}
	}

Подскажите, что конкретно для нас должен означать этот WARNING и корректно ли в данном случае поведение самого pg_probackup? Файлы принадлежат кластеру postgres и они корректны.

Спасибо.

[funny-falcon]

Косяк...

[funny-falcon]

А нет, опасности нет. Просто неприятный ворнинг.

[sgrinko]

Очень надеемся, что в следующей версии это поправите :)

[funny-falcon]

Помержил в REL_2_5