Classic drivers have their interfaces (except for network and storage) pre-determined. Unlike dynamic drivers, it is not possible to change these interfaces for nodes with a classic driver. If that is attempted (when creating or updating a node), an exception MustBeNone is raised (and HTTP status 400 is returned). So that we don't break existing ironic clusters that have nodes with classic drivers and interfaces specified, a warning is logged (instead of raising an exception) when a TaskManager is created. Change-Id: I290b10f735d0da9710d1ee3b50c3252f73956428 Partial-Bug: #1524745
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167 B