title: Ceph: too many PGs per OSD
body: <p>I configured Ceph with the recommended values (using a formula from the docs).  I have 3 OSDs, and my config (which I've put on the monitor node and all 3 OSDs) includes this:</p>
  
  <pre><code>osd pool default size = 2
  osd pool default min size = 1
  osd pool default pg num = 150
  osd pool default pgp num = 150
  </code></pre>
  
  <p>When I run <code>ceph status</code> I get:</p>
  
  <pre><code> health HEALTH_WARN
          too many PGs per OSD (1042 &gt; max 300)
  </code></pre>
  
  <p>This is confusing for two reasons.  First, because the recommended formula did not satisfy Ceph.  Second, and most puzzling, is that it says I have 1042 PGs per OSD, when my configuration says 150.</p>
  
  <p>What am I doing wrong?</p>