Why getting error mongod dead but subsys locked and Insufficient free space for journal files on Linux?

Question

I have installed mongo-10gen mongo-10gen-server on Linux CentOS server.

I followed the steps from Link.

I have configured /etc/mongo

Answer 1

first

cd /usr/local/src/mongo/bin/

then

./mongod --dbpath /usr/local/src/mongo/data/db/ --smallfiles