[sheepdog-users] Question on cluster recovery when power failure?

icez network icez at icez.net
Tue Oct 2 12:04:19 CEST 2012


Last week I found the power failure at the test cluster that take down my
whole sheepdog cluster. The cluster restore process is smooth as I started
back all the sheepdog nodes. All data are in place with no any data loss.

Then I think that, as far as I know, when whole cluster
shutdown, sheepdog requires all nodes in the same cluster to be started to
resume running again. (Please correct me if I'm wrong.) And If there's node
in the cluster that failed to start (e.g.: storage hard disk failure caused
from power failure, system crash with no way to recovery) so the whole
cluster cannot resume the running state back as there's missing node.

May I ask that if the situation above occurs, how can I recover the cluster
back. Does 'collie cluster recovery' do the magic that resume the cluster
state? Or which command I have to use to recover the cluster back.


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