<p class="MsoNormal">Hello,</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal">I’m playing with nova CLI and I found that there are several
commands for managing the current state of instances running in the cloud.</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal">These are the states I found:</p>

<p class="MsoNormal"> </p>

<ul><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>initial</li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>build</li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>active</li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>shutoff</li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>suspended</li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>rescue</li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>paused</li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>reboot</li></ul>















<p class="MsoNormal"> </p>

<p class="MsoNormal">And these are the nova commands for changing the current
state:</p>

<p class="MsoNormal"> </p>

<ul><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>boot<span style>      </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>pause<span style>    </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>reboot<span style>  </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>rescue<span style>  </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>resume<span style>                </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>start<span style>       </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>stop<span style>       </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>suspend<span style>               </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>unpause<span style>              </span></li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>unrescue</li></ul>



















<p class="MsoNormal"> </p>

<p class="MsoNormal">QUESTION: Is there any explanation on the meaning of the
states? In particular, what’s the difference between SUSPENDED, PAUSED and
RESCUE?</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal">Another command changes the status and, from what I found,
it always changes that to ERROR.</p>

<p class="MsoNormal">The command is “nova reset-state”.</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal">QUESTION: what’s the semantics of this command?</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal"> </p>

<p class="MsoNormal">Then, I found some other commands that sound like status
management command but, actually they are not:</p>

<p class="MsoNormal"> </p>

<ul><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>Lock </li><li><span style="font-family:Symbol"><span style>·<span style="font:7.0pt "Times New Roman"">        
</span></span></span>Unlock</li></ul>



<p class="MsoNormal"> </p>

<p class="MsoNormal">QUESTION: What’s the meaning of these?</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal"> </p>

<p class="MsoNormal"><a name="_MailAutoSig"><b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:black">Marco.</span></b></a><span style><span style="font-size:9.0pt"></span></span></p>