Method and system for determining device criticality in a computer configuration
AssigneeHewlett-Packard Development Company, L.P.
InventorsKishore Kumar Muppirala, Santosh Rao, Harish S. Babu, Ashok Rajagopalan
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Abstract
A method for determining the criticality of a device in a multi-path computer configuration comprising the steps of: traversing a directed acyclic graph representing a platform hierarchy; and determining paths within the directed acyclic graph affected by the removal of the device. A computer system comprising a directed acyclic graph data structure representing a platform hierarchy; and a control arrangement for traversing the directed acyclic graph to determining paths therein affected by removal of a device.
Claims12
A method for determining the criticality of a device during a hot-plug operation in a multi-path computer configuration comprising the steps of:
- traversing a directed acyclic graph representing a platform hierarchy during the hot-plug operation;
- determining paths within the directed acyclic graph affected by the hot-plug operation of the device;
- determining devices corresponding to each affected access path;
- determining devices that lose all their access paths;
- and
- determining usage in the system of at least the devices that lose all their access paths, wherein the usage of devices in the system is determined from attributes stored at the nodes of the directed acyclic graph and wherein the attributes comprise at least one of whether the device is a boot device, or whether the device is a quorum disk.
A computer system for determining the criticality of a device during a hot-plug operation in a multi-path computer configuration comprising a directed acyclic graph data structure representing a platform hierarchy;
- and a control arrangement for traversing the directed acyclic graph during the hot-plug operation to determining paths therein affected by the hot-plug operation of the device, wherein the control arrangement determines devices corresponding to each affected access path, determines devices that lose all their access paths, and determines the usage in the system of at least the devices that lose all their access paths, wherein the usage of devices in the system is determined from attributes stored at the nodes of the directed acyclic graph and wherein the attributes comprise at least one of:
- whether the device is a boot device, or whether the device is a quorum disk.
Dependencies are inferred from the claim text.