On 2022-08-20 03:04, Song Liu wrote:
Hmm.. does the user space use different logic based on the kernel version? I still cannot reproduce the issue. Have you tried to reproduce the issue without mysqld? Something with fio will be great.
No, I spent last day trying various fio options but I was unable to reproduce the problem yet.
I managed to reduce the required mysql I/O -- I can now reproduce after importing ~150MB SQL dump instead of 20GB.
It's also interesting: Just hard killing mysqld which will cause recovery on next start is already enough to trigger the problem.
I filed ticket with MariaDB to get some input from them, maybe they have an idea for another reproducer: https://jira.mariadb.org/browse/MDEV-29349
-- Regards, Thomas
