Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2009-12-28
2011-12-27
Lohn, Joshua (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C711S154000, C709S224000
Reexamination Certificate
active
08086896
ABSTRACT:
In virtualized environments, storage may be managed dynamically due to the changing data storage requirements. In such environments, logical storage unit identifiers (LUN IDs) may be modified as a result of deleting an existing mapping between physical storage and a virtualization server and recreating the mapping. This can result in I/O request failure. Techniques for resolving errors resulting from LUN ID modifications can be time-intensive and labor-intensive and can disrupt a communication path between a host device and the physical storage. Functionality can be implemented to dynamically identify the LUN ID modifications, determine valid LUN IDs, and retransmit failed I/O requests. This can help minimize I/O request failures due to LUN ID modifications without disrupting the communication path between the host device and the physical storage.
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Allen James P.
Anumalasetty Kiran K.
Maddali Sudhir
Mutnury Bhyrav M.
Pafumi James A.
DeLizio Gilliam, PLLC
International Business Machines - Corporation
Lohn Joshua
Patel Kamini
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