I wouldn&#39;t be surprised if this was related to dynamic allocation on the VM.  Essentially, it can inject a random very large I/O latency to any operation.  It may also change the hardware model used by the VM.<div><br>
</div><div>I would recommend looking at InnoDB diagnostics, and possibly starting up w/ <span class="Apple-style-span" style="font-family: &#39;Trebuchet MS&#39;, Trebuchet, Verdana, sans-serif; font-size: 13px; line-height: 20px; "><font class="Apple-style-span" color="#000000">innodb_force_recovery=1 set in my.cnf.  Run &quot;check table&quot; on each table (or at least the ones you&#39;ve detected problems with) for closer analysis.  </font></span></div>
<div><span class="Apple-style-span" style="font-family: &#39;Trebuchet MS&#39;, Trebuchet, Verdana, sans-serif; font-size: 13px; line-height: 20px; "><font class="Apple-style-span" color="#000000"><br></font></span></div>
<div><span class="Apple-style-span" style="font-family: &#39;Trebuchet MS&#39;, Trebuchet, Verdana, sans-serif; font-size: 13px; line-height: 20px; "><font class="Apple-style-span" color="#000000">--Joe</font></span></div>