live migration: cpu doesn't have compatibility
Asked by
Zhiyuan Zhou
I deployed ESSEX with two nodes, when I use live migration (nova live-migration instance_uuid targetHost ) , there will be error reported "cpu doesn't have compatibility".
I checked the target machine CPU do have less features (just two flags less) than source machine ; but both the two CPU is VT enabled, they just have 2 features differ.
If I migrate a instance from the feature-richer node to the other node, it works well.
This could be a possible problem of migration feature? the differences between these CPUs are actually not important for virtual machine running, nova should just check the required features but not CPU features exactly greater or equal ?
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