无法使用SELinux启动Mysql

131212 09:08:08 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
131212 09:08:58 mysqld_safe Starting mysqld daemon with databases from /u/mysql
131212  9:08:58 [Warning] Can't create test file /u/mysql/webserver.lower-test
131212  9:08:58 [Warning] Can't create test file /u/mysql/webserver.lower-test
^G/usr/libexec/mysqld: Can't change dir to '/u/mysql/' (Errcode: 13)
131212  9:08:58 [ERROR] Aborting

我们已经使用许多其他服务器设置MySQL,但是这里的区别在于mysql datadir与标准的/vat/lib.mysql位于不同的分区中.而是在/ u / mysql中.

这是/etc/my.cnf

[mysqld]
datadir=/u/mysql
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

max_allowed_packet = 32M

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

这是mysql目录的权限

drwxr-xr-x. mysql    mysql    system_u:object_r:mysqld_db_t:s0 mysql

这是/ u / mysql目录中某个directorys的权限

drwx------. mysql mysql system_u:object_r:mysqld_db_t:s0 databasefolder

有没有人对如何解决这个问题有任何想法？我可以确认关闭SELinux可以解决问题所以它必须是某种SELinux权限问题.

谢谢