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network.bridge.type=native libvirt.vif.driver.Vpn=com.cloud.hypervisor.kvm.resource.OvsVifDriver |
Resume support
Resume support is implemented for operators to have the ability to finish off a previously submitted migration command which halfway failed during its new network implementation. After correcting the cause of that failure, the operator can re-issue the same migration command, now with a resume parameter set to True.
The resume logic follows below table :
resume parameter value \ Network migration "state" | Good | Bad (but error resolved) |
False (default) | Success | Fail (again) |
True | Success | >> Success << |
Based on the resume parameter and the related field in the networks table, we “force” migration of a network even if the network offering of the network is already the same as the current network offering. In that case, we will use the network that is stored in the related field (DB table) as the already generated copy. Otherwise we follow the normal migration procedure.
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