Patent ID: 6721901
Filing Date: 2004-04-13
Classification: G06F,Y10S

Abstract:
A method for recovering mirrored logical volumes within a computer system after a system failure, wherein said computer system includes a plurality of active nodes, said method comprising:providing a pair of mirrored in-flight logs for each of said plurality of active nodes; providing mirrored in-flight logs for said mirrored logical volumes, wherein said mirrored in-flight logs include a plurality of node partitions and each node partition corresponds to one of said plurality of active nodes, wherein said mirrored in-flight logs indicate whether or not a write operation is currently being performed by at least one of said plurality of active nodes; and after an abnormal termination of one of said plurality of active nodes, automatically selecting a remaining node among said plurality of nodes to copy data from one of said mirrored logical volumes to another of said mirrored logical volumes.