Open Stack

Hi G.,

I don't have Ocata up anywhere, but as a "best practice", I generally do
the:
nova reset-state --active $UUID
followed immediately by
nova reboot --hard

to try and "restore/resurrect" errored instances. The reset-state --active
doesn't actually do anything to the instance, it just manipulates the nova
db. The reboot --hard does a fairly clean "reboot" of the instance even if
it is off. None of this should really have anything to do with CEPH as per
se, so not sure it will have the desired outcome on your cloud though.

On Sun, Oct 8, 2017 at 8:46 AM, Georgios Dimitrakakis <giorgis at acmac.uoc.gr>
wrote:

> Hello,
>
> I 've tried today to update my OpenStack installation to the latest Ocata
> version.
>
> What I did was to shutoff all running instances, perform all updates and
> then rebooted controller and compute nodes.
>
> All seemed to have finished successfully but unfortunately when I tried to
> power on instances that had attached to them volumes (which are provided by
> Ceph) I got the following error:
>
> libvirtError: unsupported configuration: Found duplicate drive address for
> disk with target name 'sda' controller='0' bus='0' target='0' unit='0'
>
> and the instance status now is "Error" and "No State" as a Power state.
>
> This happened only to the instances that already had volumes attached to
> them. All the rest instances booted up normally.
>
> I have tried to reset the states of the problematic instances using: nova
> reset-state --active $instance_id and then take a snapshot of them so that
> I can delete and recreate them.
>
> Unfortunately although the state update was successful the snapshot
> couldn't be taken because of this :
>
> InstanceNotRunning: Instance $instance_id is not running.
>
>
> Any ides of what can I do in order to start my instances again? Any bug
> which is related?
>
> Best regards,
>
> G.
>
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