×

METHODS AND STRUCTURE FOR TASK MANAGEMENT IN STORAGE CONTROLLERS OF A CLUSTERED STORAGE SYSTEM

  • US 20130067161A1
  • Filed: 03/28/2012
  • Published: 03/14/2013
  • Est. Priority Date: 09/09/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method operable in a clustered storage system comprising an initiator storage controller and a target storage controller, the method comprising:

  • receiving an I/O request in the initiator storage controller from an attached host system;

    shipping the I/O request from the initiator storage controller to the target storage controller for processing;

    determining, within the initiator controller, that the shipped I/O request is to be aborted;

    transmitting a task management message from the initiator storage controller to the target storage controller, the task management message indicating that the shipped I/O request is to be aborted;

    completing processing of the shipped I/O request within the target storage controller responsive to receipt of the task management message;

    returning a completion status from the target storage controller to the initiator storage controller; and

    returning the completion status from the initiator storage controller to the host system.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×