[one-users] recovery after power outage?

[Dan Yocum]

Thanks Ruben!

Someone beat me to the punch and did a 'onevm remove' on all the VMs in 
an unknown state (these are development machines), so I wasn't able to 
try the 'restart'.

Next time, I'll try the restart.

Cheers,
Dan


On 06/11/2011 08:03 AM, Ruben S. Montero wrote:
> Hi,
>
> There are basically two options:
>
> 1.- Recover from outside: this means logging in the hosts and perform
> any recovery actions needed to boot the VMs again
>
> 2.- Restart. When a VM is in unknown state and if the remote VM_DIR is
> in place (i.e. disks files or devices are in the cluster node). The
> restart action will  issue  a boot action.
>
> So in your case I think it is worth trying onevm restart .
>
> Cheers
> Ruben
>
> On Fri, Jun 10, 2011 at 8:23 PM, Dan Yocum <yocum at fnal.gov
> <mailto:yocum at fnal.gov>> wrote:
>
>     Hi All,
>
>     A few days ago we experienced a major power outage taking out our
>     entire opennebula cloud.  Nothing shut down cleanly and when the
>     headnode came back online, it still thought the VMs were running
>     albeit in an "unknown" state.  Of course, the images were still on
>     the host nodes...
>
>     Is there a way to recover *nicely* from such a situation without
>     redeploying all the VMs and getting back most if not all of the data
>     on the VMs?
>
>     Thanks,
>     Dan
>
>     --
>     Dan Yocum
>     Fermilab 630.840.6509 <tel:630.840.6509>
>     yocum at fnal.gov <mailto:yocum at fnal.gov>, http://fermigrid.fnal.gov
>     "I fly because it releases my mind from the tyranny of petty things."
>     _______________________________________________
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>
>
>
>
> --
> Dr. Ruben Santiago Montero
> Associate Professor (Profesor Titular), Complutense University of Madrid
>
> URL: http://dsa-research.org/doku.php?id=people:ruben
> Weblog: http://blog.dsa-research.org/?author=7

-- 
Dan Yocum
Fermilab  630.840.6509
yocum at fnal.gov, http://fermigrid.fnal.gov
"I fly because it releases my mind from the tyranny of petty things."