<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">hi, all<div>&nbsp; &nbsp; We also observed that live migration was failed when the cache mode is "write back".</div><div><br></div><div><br></div><div>Best Regards.</div><div>Jules Wang<br><br><div></div><div id="divNeteaseMailCard"></div><br><pre><br>At&nbsp;2012-08-09&nbsp;19:27:23,"Jake&nbsp;Grimmett"&nbsp;&lt;jog@mrc-lmb.cam.ac.uk&gt;&nbsp;wrote:
&gt;Dear&nbsp;All,
&gt;
&gt;I've&nbsp;just&nbsp;updated&nbsp;my&nbsp;VM&nbsp;hosts&nbsp;to&nbsp;Scientific&nbsp;Linux&nbsp;6.3.&nbsp;After&nbsp;setting&nbsp;the&nbsp;Disk&nbsp;
&gt;cache&nbsp;mode&nbsp;to&nbsp;"default"&nbsp;(writethrough?)&nbsp;rather&nbsp;than&nbsp;"none"&nbsp;I&nbsp;get&nbsp;the&nbsp;following&nbsp;
&gt;error&nbsp;when&nbsp;I&nbsp;try&nbsp;to&nbsp;migrate&nbsp;the&nbsp;VM:
&gt;
&gt;migrating&nbsp;wiki1
&gt;error:&nbsp;Unsafe&nbsp;migration:&nbsp;Migration&nbsp;may&nbsp;lead&nbsp;to&nbsp;data&nbsp;corruption&nbsp;if&nbsp;disks&nbsp;use&nbsp;
&gt;cache&nbsp;!=&nbsp;none
&gt;
&gt;Is&nbsp;gluster&nbsp;"coherent"&nbsp;across&nbsp;nodes,&nbsp;if&nbsp;so&nbsp;can&nbsp;I&nbsp;just&nbsp;use&nbsp;the&nbsp;--unsafe&nbsp;flag&nbsp;to&nbsp;
&gt;force&nbsp;the&nbsp;move?
&gt;
&gt;Many&nbsp;thanks,
&gt;
&gt;Jake
&gt;_______________________________________________
&gt;Gluster-users&nbsp;mailing&nbsp;list
&gt;Gluster-users@gluster.org
&gt;http://gluster.org/cgi-bin/mailman/listinfo/gluster-users
</pre></div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>