Testing disk drives shared by multiple processors in a supercomputer complex

摘要

An interface node selects a logical block address that corresponds to a contiguous memory location located on a storage device that is accessible by multiple interface nodes. The interface node retrieves a logical block address status indicator from a shared memory area and determines, based upon the logical block status indicator, whether the logical block address is utilized by a different interface node. If the logical block address is not utilized by a different interface node, the interface node tests the corresponding contiguous memory location.

主权项

1. A method comprising:
selecting, by a first interface node included in a plurality of interface nodes, a first logical block address that corresponds to a first contiguous memory location located on a storage device, wherein the storage device is accessible by each of the plurality of interface nodes; retrieving, by the first interface node, a first logical block address status indicator from a shared memory area that indicates the status of the first logical block address, the shared memory area accessible by each of the plurality of interface nodes; determining, based upon the first logical block address indicator, whether the first logical block address is utilized by a second interface node included in the plurality of nodes; and testing, by the first interface node, the corresponding first contiguous memory location in response to determining that the logical block address fails to be utilized by the second interface node.