Logical Partition Migration via Port Topology Labeling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In logically partitioned computer systems, migrating a partition from one physical port to another that supports a different network topology, such as from an internal network to an external network, is challenging due to the need for the target port to provide the same interfaces as the original port.
Innovation Solution
The system labels physical ports with specific network topologies and uses these labels to assign and migrate partitions to target ports with matching labels, ensuring that the necessary network interfaces are provided during the migration process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a partition is migrated from one physical port to another, then resource utilization is improved, but the migration fails if the target port does not support the required network topology
Solution Approach 1:
The system performs preliminary action by labeling physical ports with their supported network topologies before migration occurs. The partition manager retrieves these labels and uses them to determine compatibility with the target port before initiating migration, ensuring the target port can support the required network interfaces.
Solution Approach 2:
The system implements feedback by checking the port label against the partition's required network topology before migration. This feedback mechanism prevents migration to incompatible ports by verifying that the target port's labeled topology matches the partition's requirements.
2Reliability
If the system checks port compatibility before migration, then migration reliability is improved, but the complexity of the migration process increases
Solution Approach 1:
The system reduces complexity by performing the compatibility check in advance through preliminary labeling of ports. The partition manager automatically retrieves port labels and compares them with partition requirements before migration, eliminating the need for complex real-time compatibility assessment during migration.
3Measurement precision
If physical ports are labeled with network topology information, then partition assignment accuracy is improved, but the system requires additional labeling mechanisms
Solution Approach 1:
The system applies preliminary action by pre-labeling physical ports with their network topology characteristics. This allows the partition manager to accurately identify compatible ports for partition assignment without requiring complex dynamic detection mechanisms during runtime.
Data Source
AI summary
Migrating a logical partition (LPAR) from a first physical port to a first target physical port, includes determining a configuration of an LPAR having allocated resources residing on a computer and assigned to the first physical port of the computer. The configuration includes a label that specifies a network topology that is provided by the first physical port and the first target physical port has a port label that matches the label included in the configuration of the LPAR. The first target physical port with available capacity to service the LPAR is identified and the LPAR is migrated from the first physical port to the target physical port by reassigning the LPAR to the first target physical port.