title: Mongo DB Server Startup Warnings
body: <p>I've seen others with startup warnings but I can't seem find anything on this one. A few notes I'm running on Ubuntu 14.04 my mongo version is 3.0.5 (I've also tried 3.0.6 with similar issues) I've tried stoping/ restarting to no avail.</p>
  
  <p>It seems to be looking for a file that does not exist so I'm not sure if anyone is aware of what this file is for. Here is the log I get upon start up ($ mongo)</p>
  
  <pre><code>MongoDB shell version: 3.0.5
  connecting to: test
  Server has startup warnings:
  2015-09-04T23:25:54.707-0400 I STORAGE  [initandlisten] unable to validate readahead settings due to error: boost::filesystem::status: Permission denied: "/sys/dev/block/8:1/queue/read_ahead_kb"
  2015-09-04T23:25:54.707-0400 I STORAGE  [initandlisten] for more information, see http://dochub.mongodb.org/core/readahead
  2015-09-04T23:25:54.793-0400 I CONTROL  [initandlisten]
  2015-09-04T23:25:54.793-0400 I CONTROL  [initandlisten] ** WARNING: Cannot detect if NUMA interleaving is enabled. Failed to probe "/sys/devices/system/node/node1": Permission denied
  2015-09-04T23:25:54.793-0400 W CONTROL  [initandlisten]
  2015-09-04T23:25:54.793-0400 W CONTROL  [initandlisten] Failed to probe "/sys/kernel/mm/transparent_hugepage": Permission denied
  2015-09-04T23:25:54.793-0400 W CONTROL  [initandlisten]
  2015-09-04T23:25:54.793-0400 W CONTROL  [initandlisten] Failed to probe "/sys/kernel/mm/transparent_hugepage": Permission denied
  2015-09-04T23:25:54.793-0400 I CONTROL  [initandlisten]
  </code></pre>
  
  <p>I can't locate <code>"/sys/dev/block/8:1/queue/read_ahead_kb"</code> which it is looking for and citing permission denied, mongo was installed via root if that makes a difference. </p>
  
  <p>Does anyone know what might be causing this error? I've done multiple mongo installs and haven't come across this before.</p>