After changing datadir, unable to start the mariadb

Hi,

I am new to mariadb, for our upcoming client i am learning Mariadb.

I have installed Mariadb 10.2 on centos 7, then i want to change the default datadir from /var/lib/mysql to /home/data. For that i have performed below steps.

1)stopped mysql.
2)created new dir.
3)copied all the data from old to new location.
4)copied my-small.cnf from /usr/share/myql/ to /etc/my.cnf(since i didnt get the default my.cnf).
5)added below lines

[mysqld]
datadir=<new loc>
socket=/<new loc>/mysql.sock
[client]
port=3306
socket=/<new loc>/mysql.sock

6)changed ownership to mysql:mysql for /etc/my.cnf and new loc.

then i tried to start mysql but facing below error message.

Job for mariadb.service failed because the control process exited with error code. See "systemctl status mariadb.service" and "journalctl -xe" for details.

Please help me.

Thanks,
Prabha.