Efficient high availability for a SCSI target over a fibre channel
AssigneeInternational Business Machines Corporation
InventorsShay H. Akirav, Oren Bar, Roman Barsky, Itay Maoz
Life of this patent
Estimating the term…
Abstract
For efficient high availability for a multi-node cluster using a processor device in a computing environment, using duplicate, standby host-bus adaptors (HBAs) for alternate nodes with respect to a node with the duplicate, standby HBAs using duplicate credentials of active HBAs of the node for shutting down the node, taking an active HBA of the node offline, and/or activating one of the alternate nodes.
Claims15
A method for efficient high availability for a small computer system interface (SCSI) target over a fibre channel using a processor device in a computing environment, the method comprising:
- using a plurality of duplicate, standby host-bus adaptors (HBAs) for a plurality of alternate nodes with respect to a node, wherein the plurality of duplicate, standby HBAs use duplicate credentials of active HBAs of the node for performing one of shutting down the node, taking an active HBA of the node offline, and activating one of the plurality of alternate nodes;
- shutting down a failed node by an active one of the plurality of alternate nodes using a fence device;
- bringing up standby ports of the plurality of duplicate, standby HBAs by the active node;
- registering the standby ports of the plurality of duplicate, standby HBAs using the duplicate credentials of the failed node, wherein the duplicate credentials include at least duplicate address links of the active HBAs of the failed node;
- and
- taking over all jobs of the failed node by the active node using a shared data structure including SCSI device assignments, SCSI reservations, and required host notifications.
A system for efficient high availability for a small computer system interface (SCSI) target over a fibre channel in a computing environment, the system comprising:
- at least one processor device operable in the computing environment, wherein the at least one processor device:
- using a plurality of duplicate, standby host-bus adaptors (HBAs) for a plurality of alternate nodes with respect to a node, wherein the plurality of duplicate, standby HBAs use duplicate credentials of active HBAs of the node for performing one of shutting down the node, taking an active HBA of the node offline, and activating one of the plurality of alternate nodes,
- shuts down a failed node by an active one of the plurality of alternate nodes using a fence device,
- brings up standby ports of the plurality of duplicate, standby HBAs by the active node,
- registers the standby ports of the plurality of duplicate, standby HBAs using the duplicate credentials of the failed node, wherein the duplicate credentials include at least duplicate address links of the active HBAs of the failed node, and
- takes over all jobs of the failed node by the active node using a shared data structure including SCSI device assignments, SCSI reservations, and required host notifications.
A computer program product for efficient high availability for a small computer system interface (SCSI) target over a fibre channel using a processor device, the computer program product comprising a non-transitory computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:
- a first executable portion that uses a plurality of duplicate, standby host-bus adaptors (HBAs) for a plurality of alternate nodes with respect to a node, wherein the plurality of duplicate, standby HBAs use duplicate credentials of active HBAs of the node for performing one of shutting down the node, taking an active HBA of the node offline, and activating one of the plurality of alternate nodes;
- shuts down a failed node by an active one of the plurality of alternate nodes using a fence device;
- brings up standby ports of the plurality of duplicate, standby HBAs by the active node;
- registers the standby ports of the plurality of duplicate, standby HBAs using the duplicate credentials of the failed node, wherein the duplicate credentials include at least duplicate address links of the active HBAs of the failed node;
- and
- takes over all jobs of the failed node by the active node using a shared data structure including SCSI device assignments, SCSI reservations, and required host notifications.
Dependencies are inferred from the claim text.