<p>I've found the documentation hard to find, such as "type: hostdir" for storage pools. What is hostdir? Is this the only type of pool OpenEBS supports?</p>

<p>Their documentation is missing explaining what <code>hostdir</code> is in their <code>StoragePool</code> resource definition. Judging by <a href="https://github.com/openebs/openebs/blob/master/k8s/openebs-config.yaml" rel="nofollow noreferrer">this</a> it's just a directory on your Kuberbetes nodes. </p>

<p>Also, they mention that there are 2 options: a directory on the host-os or a directory on a mounted disk. Either one of those 2 choices means that your directory will be on the node so it will be a <code>hostdir</code>, so I assume that's the only option available.</p>

<p>Hope it helps!</p>
