Apparatus, system, and method for global metadata copy repair

Details Apparatus, system, and method for global metadata copy repair Apparatus, system, and method for global metadata copy repair

2005-12-02

2009-06-09

Patel, Hetul (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S156000, C711S165000, C711S161000, C711S162000, C714S006130

Reexamination Certificate

active

07546412

ABSTRACT:
An apparatus, system, and method are disclosed for global metadata copy repair. The apparatus includes a control module for copying global metadata from primary storage to target storage, a verification module configured to identify invalid track in the global metadata, a location module configured to maintain a current read address, and a read module configured to find a valid copy of the invalid track. The system includes a plurality of hosts, a storage controller in communication with the plurality of hosts over a network, a primary storage device, a target storage device, and the apparatus. The method includes copying global metadata from a primary storage device to a target storage device, identifying invalid track in the global metadata of the primary storage device, maintaining a current read address of a buffer read, and finding a valid copy of the invalid track.

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