cannot start mariadb after migration on centos7(Note: my.cnf changed)

[root@localhost ]# systemctl status mariadb.service -l â mariadb.service - MariaDB 10.3.31 database server Loaded: loaded (/usr/lib/systemd/system/mariadb.service; disabled; vendor preset: disabled) Drop-In: /etc/systemd/system/mariadb.service.d ââmigrated-from-my.cnf-settings.conf Active: failed (Result: exit-code) since Mon 2021-09-20 14:29:38 +04; 28s ago Docs: man:mysqld(8) https://mariadb.com/kb/en/library/systemd/ Process: 1839 ExecStart=/usr/sbin/mysqld $MYSQLD_OPTS $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION (code=exited, statu s=1/FAILURE) Process: 1818 ExecStartPre=/bin/sh -c [ ! -e /usr/bin/galera_recovery ] && VAR= || VAR=`cd /usr/bin/..; /usr/bin/g alera_recovery`; [ $? -eq 0 ] && systemctl set-environment _WSREP_START_POSITION=$VAR || exit 1 (code=exited, status =0/SUCCESS) Process: 1814 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCE SS) Main PID: 1839 (code=exited, status=1/FAILURE) Status: "MariaDB server is down"

Sep 20 14:29:38 localhost.localdomain systemd[1]: Starting MariaDB 10.3.31 database server... Sep 20 14:29:38 localhost.localdomain mysqld[1839]: 2021-09-20 14:29:38 0 [Note] /usr/sbin/mysqld (mysqld 10.3.31-Mari aDB) starting as process 1839 ... Sep 20 14:29:38 localhost.localdomain mysqld[1839]: 2021-09-20 14:29:38 0 [Warning] Can't create test file /mnt/data/m ysql/localhost.lower-test Sep 20 14:29:38 localhost.localdomain mysqld[1839]: [91B blob data] Sep 20 14:29:38 localhost.localdomain mysqld[1839]: 2021-09-20 14:29:38 0 [ERROR] Aborting Sep 20 14:29:38 localhost.localdomain systemd[1]: mariadb.service: main process exited, code=exited, status=1/FAILURE Sep 20 14:29:38 localhost.localdomain systemd[1]: Failed to start MariaDB 10.3.31 database server. Sep 20 14:29:38 localhost.localdomain systemd[1]: Unit mariadb.service entered failed state. Sep 20 14:29:38 localhost.localdomain systemd[1]: mariadb.service failed.

Sep 20 14:30:01 localhost.localdomain CROND[1858]: (root) CMD (/usr/lib64/sa/sa1 1 1) Sep 20 14:32:04 localhost.localdomain polkitd[1134]: Registered Authentication Agent for unix-process:2064:34538292 (system bus nam Sep 20 14:32:04 localhost.localdomain systemd[1]: Starting MariaDB 10.3.31 database server... -- Subject: Unit mariadb.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit mariadb.service has begun starting up. Sep 20 14:32:04 localhost.localdomain mysqld[2095]: 2021-09-20 14:32:04 0 [Note] /usr/sbin/mysqld (mysqld 10.3.31-MariaDB) starting Sep 20 14:32:04 localhost.localdomain mysqld[2095]: 2021-09-20 14:32:04 0 [Warning] Can't create test file /mnt/data/mysql/localhos Sep 20 14:32:04 localhost.localdomain mysqld[2095]: [91B blob data] Sep 20 14:32:04 localhost.localdomain mysqld[2095]: 2021-09-20 14:32:04 0 [ERROR] Aborting Sep 20 14:32:04 localhost.localdomain systemd[1]: mariadb.service: main process exited, code=exited, status=1/FAILURE Sep 20 14:32:04 localhost.localdomain systemd[1]: Failed to start MariaDB 10.3.31 database server. -- Subject: Unit mariadb.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit mariadb.service has failed. -- -- The result is failed. Sep 20 14:32:04 localhost.localdomain systemd[1]: Unit mariadb.service entered failed state. Sep 20 14:32:04 localhost.localdomain systemd[1]: mariadb.service failed. Sep 20 14:32:04 localhost.localdomain polkitd[1134]: Unregistered Authentication Agent for unix-process:2064:34538292 (system bus n