[Mongodb] child process failed, exited with error number 100 無法啟動monogo

在做硬碟塞爆測試的時候，為了將新的build丟上去機器後重開機，
結果會死在monogo無法啟動。

錯誤訊息如下

kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]
about to fork child process, waiting until server is ready for connections.
forked process: 11871
all output going to: //storage/COSA//Mongo//log/mongodb.log
ERROR: child process failed, exited with error number 100

追了一下Monog噴的log

死在Insufficient free space for journal files 的錯誤，不過也是噴child process failed, exited with error number 100，這個錯誤的產生說是不正常的mongo db關機所造成。

可以參考這篇 http://f.dataguru.cn/thread-107361-1-1.html