مشکل read only شدن سرور

[ertebat7]

root@server3 [~]# service mysql restart
rm: cannot remove `/var/lib/mysql/server3.ertebat.us.pid': Read-only file system
MySQL server process #7573 is not running! [FAILED]
rm: cannot remove `/var/lib/mysql/server3.ertebat.us.pid': Read-only file system
rm: cannot remove `/var/lock/subsys/mysql': Read-only file system
Failed to stop running server, so refusing to try to start.[FAILED]