摘要:
A computer-implemented method, apparatus, and computer-usable program code is provided to generate unique identifiers for a logically partitioned and/or virtualized data processing system. A number of computing entities supported by the data processing system are identified to form a number of identified entities. A set of unique identifiers is generated based upon the number of identified entities. A unique identifier from the set of unique identifiers is assigned to a logical computing entity during operation of the data processing system.
摘要:
The present invention relates to a method, a computer program product and a system for managing virtual instances of a physical port attached to a network. The method is based on the Fibre Channel N_Port virtualisation for a physical Fibre Channel N_Port. Multiple virtual Fibre Channel adapters share a single physical N_Port among multiple operating system instances. The invention discloses means for the automatic and persistent generation and administration of unique Worldwide Port Names needed for the N_Port virtualisation.
摘要:
A method, apparatus, and computer program product are disclosed for collecting data about the transmission of network packets that are associated with specified applications. The packets are transmitted through a communications network fabric that is used to couple data processing systems together. A particular existing single bit in a frame header definition is selected. The bit is defined as part of the standard frame header by a communication protocol as an available bit in the frame header. The standard protocol is unchanged by the selection of this bit. An application is specified to be monitored. The selected bit is then set in each network packet that is generated by the specified application. The fabric collects performance data for each packet that has the bit set. Thus, the fabric collects performance data about a transmission of each packet that is generated by the application when that application is setting the bit.
摘要:
A computer Input/Output system having a fabric, a control unit (CU) and a host computer including a channel, the channel having a channel port connected by a first link to a channel neighbor port of the fabric, and the control unit having a CU port connected by a second link to a CU neighbor port on the fabric. Then an error is detected in the link or protocol between the channel and the control unit, error data are reported to the channel by the channel, the channel port, the channel neighbor port, the control unit, the CU port and the CU neighbor port and sent to the channel. The error data are provided to the host computer for analysis.
摘要:
Communication between components having differing protocols is facilitated by a protocol converter coupled between the components that converts communications of one protocol into communications of another protocol. This conversion is performed without requiring code modification to either of the components. The conversion includes translating identifiers of one protocol to identifiers of another protocol.
摘要:
A computer Input/Output system having a fabric, a control unit (CU) and a host computes including a channel, the channel having a channel port connected by a first link to a channel neighbor port of the fabric, and the control unit having a CU port connected by a second link to a CU neighbor port on the fabric. When an error is detected in the link or protocol between the channel and the control unit, after a retry of the failing operation is performed, error data are reported to the channel by the channel, the channel port, the channel neighbor port, the control unit, the Cu port and the CU neighbor port and sent to the channel. The error data are provided to the host computer for analysis.
摘要:
Systems and arrangements to adjust resource accessibility based upon usage modes are contemplated. Embodiments may include a supervisor instance such as an operating system that is adapted to select one or more supervisor keys from a set of supervisor keys available to the host node or platform upon which the supervisor instance is operating. The supervisor instance may select the supervisor key(s) based upon an association of the supervisor instance with a usage mode represented by a supervisor key name. In many embodiments, supervisor key names may be associated with resources via with one or more of the supervisor keys based upon the resources needed when operating in the usage modes by a system administrator. Once the supervisor instance is initialized, the supervisor instance may issue client keys that allow access to subsets of the resources available to the supervisor instance based upon usage modes of the clients.
摘要:
A method for authenticating a requesting entity in a communications environment. In an exemplary embodiment, the method includes determining a client identification of a client node associated with the requesting entity, and determining whether the requesting entity associated with the client node is acting in a supervisor capacity. A key to the requesting entity is returned from a resource provider node upon determining that the client identification of the client node indicates that the client node is permitted to access one or more resources of the provider node, and that the client node is acting in a supervisor capacity.
摘要:
A method, apparatus, and computer program product are disclosed for requesting deterministic virtual address identifiers for a node. The communications network includes a communications network fabric that couples nodes together. One of the nodes requests an assignment by the fabric of a particular value for a first node address identifier to be assigned to the node. The node then requests an assignment of a virtual node address identifier to be assigned to the node. The fabric assigns to the node a value for the virtual node address identifier that is deterministic and predictable by the node before the value is assigned.
摘要:
A non-disruptive unassignment of an address from a fabric responsive to a request from a channel adapter. A logout command requests the fabric to unassign an address. The status of the address is thereby changed from active to unassigned and an acknowledgment sent back to the channel adapter.