Hi, Since some time my mariadb does not start at system start. I don't use the mariadb databases a lot, so I didn't notice it immediately. Hence I'm unsure when the problem occurred first time. When trying to start is manually, I gor the message [ERROR] InnoDB: Upgrade after a crash is not supported. The redo log was created with MariaDB 10.5.8. Searching that message, I saw a post on https://bbs.archlinux.org/viewtopic.php?id=259364 Like me, he had a non-default location for the databases configured in /etc/my.cnf. The solution that worked for him was to change that to another location in my.cnf, starting the database (which now succeeded), and copy the existing databases to that new location. So I decided to mimic that: commented out the existing database location, entered an new one, and started the database server (as root) with systemctl start mariadb After a while, the new location is created (owned by mysql:root) and populated: l mysql_recover totaal 111048 drwx------ 6 mysql root 243 2 okt 21:33 ./ drwxr-xr-x 225 jogchum users 16384 2 okt 21:26 ../ -rw-rw---- 1 mysql mysql 417792 2 okt 21:27 aria_log.00000001 -rw-rw---- 1 mysql mysql 52 2 okt 21:27 aria_log_control -rw-rw---- 1 mysql mysql 942 2 okt 21:27 ib_buffer_pool -rw-rw---- 1 mysql mysql 12582912 2 okt 21:27 ibdata1 -rw-rw---- 1 mysql mysql 100663296 2 okt 21:27 ib_logfile0 drwx------ 2 mysql mysql 4096 2 okt 21:27 mysql/ -rw-rw---- 1 root root 14 2 okt 21:27 mysql_upgrade_info drwx------ 2 mysql mysql 28 2 okt 21:27 performance_schema/ drwx------ 2 mysql mysql 8192 2 okt 21:27 sys/ drwx------ 2 mysql mysql 28 2 okt 21:27 test/ But unlike the posting at bbs.archlinux.org just mentioned, the server crashed again, now with the following messages in journalctl: #################################################################################3 journalctl -xeu mariadb.service A start job for unit mariadb.service has finished with a failure. The job identifier is 2782226 and the job result is failed. okt 02 21:20:47 linux-mkay systemd[1]: Starting MariaDB database server... Subject: A start job for unit mariadb.service has begun execution Defined-By: systemd Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel A start job for unit mariadb.service has begun execution. The job identifier is 2790830. okt 02 21:20:47 linux-mkay mysql-systemd-helper[44977]: 2022-10-02 21:20:47 0 [Note] /usr/sbin/mysqld (server 10.8.3-MariaDB) starting as process 44977 ... okt 02 21:20:48 linux-mkay systemd[1]: mariadb.service: Main process exited, code=exited, status=1/FAILURE Subject: Unit process exited Defined-By: systemd Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel An ExecStart= process belonging to unit mariadb.service has exited. The process' exit code is 'exited' and its exit status is 1. okt 02 21:20:48 linux-mkay systemd[1]: mariadb.service: Failed with result 'exit-code'. Subject: Unit failed Defined-By: systemd Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel The unit mariadb.service has entered the 'failed' state with result 'exit-code'. okt 02 21:20:48 linux-mkay systemd[1]: Failed to start MariaDB database server. Subject: A start job for unit mariadb.service has failed Defined-By: systemd Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel A start job for unit mariadb.service has finished with a failure. The job identifier is 2790830 and the job result is failed. okt 02 21:26:55 linux-mkay systemd[1]: Starting MariaDB database server... Subject: A start job for unit mariadb.service has begun execution Defined-By: systemd Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel A start job for unit mariadb.service has begun execution. The job identifier is 2792404. okt 02 21:26:55 linux-mkay mysql-systemd-helper[45372]: Creating MySQL privilege database... okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: Two all-privilege accounts were created. okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: One is root@localhost, it has no password, but you need to okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: be system 'root' user to connect. Use, for example, sudo mysql okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: The second is mysql@localhost, it has no password either, but okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: you need to be the system 'mysql' user to connect. okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: After connecting you can set the password, if you would need to be okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: able to connect as any of these users with a password and without sudo okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: See the MariaDB Knowledgebase at https://mariadb.com/kb okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: Please report any problems at https://mariadb.org/jira okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: The latest information about MariaDB is available at https://mariadb.org/. okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: Consider joining MariaDB's strong and vibrant community: okt 02 21:27:17 linux-mkay mysql-systemd-helper[45384]: https://mariadb.org/get-involved/ okt 02 21:27:17 linux-mkay mysql-systemd-helper[45468]: 2022-10-02 21:27:17 0 [Note] /usr/sbin/mysqld (server 10.8.3-MariaDB) starting as process 45468 ... okt 02 21:27:17 linux-mkay mysql-systemd-helper[45468]: 2022-10-02 21:27:17 0 [Warning] Can't create test file /home/jogchum/mysql_recover/linux-mkay.lower-test okt 02 21:27:17 linux-mkay mysql-systemd-helper[45468]: [103B blob data] okt 02 21:27:17 linux-mkay mysql-systemd-helper[45468]: 2022-10-02 21:27:17 0 [ERROR] Aborting okt 02 21:27:17 linux-mkay systemd[1]: mariadb.service: Main process exited, code=exited, status=1/FAILURE Subject: Unit process exited Defined-By: systemd Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel ############################################################################################3 Anyone an idea why /home/jogchum/mysql_recover/linux-mkay.lower-test cna't be created an how to solve that? Thans in advance! regards, Jogchum