title: Mongodb throwing No space left on device error intermittently
body: <p>MongoDB throwing following error in syslogs:-</p>
  
  <p>LogFile::synchronousAppend failed with 16384 bytes unwritten out of 16384 bytes;  b=0x7fed27ffe000 errno:28 No space left on device Tue Jun 26 00:13:42 Got signal: 6 (Aborted)</p>
  
  <p>It is a 64 bit Cent OS machine. My Disk Usage is 65% only.</p>
  
  <p>One that happens, mongodb crashes and needs to be started again.</p>
  
  <p>What is the problem and solution?</p>