Hi Stefan,<div><br></div><div>That can't be done currently, but I've opened a ticket [1] to evaluate this feature for future versions.</div><div><br></div><div>Meanwhile, the workaround is quite simple:</div><div>From the running or unknown state you can execute a resubmit. This will move the VM to pending, and the scheduler will re-deploy it in a working Host. At this point, the VM will be in prolog state [2], and this in when the disks are copied again to the VM directory.</div>
<div><br></div><div>In the front-end, edit the files /var/lib/one/remotes/tm/shared/ clone context ln mkimage mkswap to check if the destination disk file already exists and exit.</div><div><br></div><div>Remember to execute 'onehost sync' after any change in the remotes directory. This way opennebula will copy the new files to the Hosts in the next monitorization cycle.</div>
<div><br></div><div>Regards</div><div><br></div><div>[1] <a href="http://dev.opennebula.org/issues/1639">http://dev.opennebula.org/issues/1639</a></div><div>[2] <a href="http://opennebula.org/_media/documentation:rel3.8:states-complete.png">http://opennebula.org/_media/documentation:rel3.8:states-complete.png</a><br>
</div><div class="gmail_extra"><br clear="all">--<br>Carlos Martín, MSc<br>Project Engineer<br>OpenNebula - The Open-source Solution for Data Center Virtualization<div><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="http://www.OpenNebula.org" target="_blank">www.OpenNebula.org</a> | <a href="mailto:cmartin@opennebula.org" target="_blank">cmartin@opennebula.org</a> | <a href="http://twitter.com/opennebula" target="_blank">@OpenNebula</a></span><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="mailto:cmartin@opennebula.org" style="color:rgb(42,93,176)" target="_blank"></a></span></div>
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<br><br><div class="gmail_quote">On Mon, Oct 1, 2012 at 4:57 PM, <span dir="ltr"><<a href="mailto:Stefan.Steinert@brodos.de" target="_blank">Stefan.Steinert@brodos.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<font face="Dialog">Hi,</font> </p>
<br>
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<font face="Dialog">I am currently using OpenNebula with multiple Hosts and the VM Images Stored in an shared NFS System. So every Host sees all Images.</font> </p>
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<font face="Dialog">I got now the Problem that I want to provide a fault tolerant system with mostly no loss of data on crash.</font> </p>
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<font face="Dialog">Let's have the situation that one of my Host crashes... OpenNebula now tells me that the Host is down but still assumes that the VM are running.</font> </p>
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<p style="margin-bottom:0;margin-top:0">
<font face="Dialog">What I now want to do is to restart the VM which was running on the crashed Host with the same already deployed hard disk images on a different Host still working host to get the system with the existing data back running (something like an offline migration but with one host down).</font> </p>
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<font face="Dialog">Till now I was not able to find a way to do that in OpenNebula.</font> </p>
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<font face="Dialog">Is there already a way and I didn't find it or is that planed as a future feature?</font> </p>
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<font face="Dialog">regards</font> </p>
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<p style="margin-bottom:0;margin-top:0">
<font face="Dialog">Stefan</font>
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