<div dir="ltr">Hi<div><br></div><div style>The options are:</div><div style>1.- Shutdown. This will shutdown the VMs an preserve the changes only of persistent images. Pro: The procedure is totally safe. Con: You'll loose state. The redeployment of the VMs may take a long time (need to copy the disk images again to the hosts)</div>
<div style><br></div><div style>2.- Suspend. This will checkpoint the VMs. The disk images are left in the host. Pro: quick you preserve the VM state. Cons: You may loose the disk if something goes wrong during the host maintenance. </div>
<div style><br></div><div style>3.- Stop. Same as above but the images are moved to the datastore server (this depends on the storage). Pro: preserve state. you have a copy in the storage server. Cons: same as shutdown.</div>
<div style><br></div><div style><br></div><div style>For all the three note that some hypervisors do not handle quite well concurrency. This is limited at the driver level, and should be enough, but you may want to not stress the hypervisor and shutdown/suspend/stop the VMs one by one...</div>
<div style><br></div><div style>Stop/Suspend operations. Some versions of OpenNebula may delete the VM disk images if the resume operation fail. If that's your case, before resuming the hosts you must be sure that the host is up and properly configured...</div>
<div style><br></div><div style>Cheers</div><div style><br></div><div style>Ruben</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Mar 7, 2013 at 2:50 PM, Duverne, Cyrille <span dir="ltr"><<a href="mailto:cyrille.duverne@euranova.eu" target="_blank">cyrille.duverne@euranova.eu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Dear mailing list<br><br>I'll have to plan a maintenance slot on my ONE infra.<br><br>During the maintenance the whole infra has to be shut down (electric maintenance), I have active VM in the infra. May I suspend them, shut all machines down, and reactivate them after the reboot ?<br>
<br>Is this tested ? Safe ?<br>Any other idea ? (Save VM as isn't an option :) )<br><br>Thanks in advance<span class="HOEnZb"><font color="#888888"><br>Cyrille<br></font></span></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>Ruben S. Montero, PhD<br>Project co-Lead and Chief Architect<br>OpenNebula - The Open Source Solution for Data Center Virtualization<br><a href="http://www.OpenNebula.org" target="_blank">www.OpenNebula.org</a> | <a href="mailto:rsmontero@opennebula.org" target="_blank">rsmontero@opennebula.org</a> | @OpenNebula
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