title: elasticsearch fail to start gives erorr
body: <p>when I run command to start elasticsearch ..</p>
  <pre><code>/elasticsearch -f
  </code></pre>
  <p>gives bunch of errors like</p>
  <blockquote>
  <p>ElasticSearchIllegalStateException[Failed to obtain node lock, is the following location writable?: [/home/anish/elasticsearch/data/elasticsearch]]</p>
  <p>IOException[failed to obtain lock on /home/anish/elasticsearch/data/elasticsearch/nodes/49]</p>
  <pre><code>  IOException[Cannot create directory: /home/anish/elasticsearch/data/elasticsearch/nodes/49]
  </code></pre>
  </blockquote>
  <p>dont know how to get rid of it..pl help</p>