... whenever any path in the path group tests successfully, that is, the path checker for the path returns PATH_UP (that is, not PATH_DOWN, PATH_SHAKY, or -1)? It is architecturally asymmetrical to push this responsibility up to SAN management applications and/or administrators (as it currently stands) since the path group can be put into a disabled mode by either user or kernel multipath code without any action explicitly involving disabling path groups on behalf of the administrator.
