Provided are a method, system, and program for performing an Input/Output (I/O) operation with respect to a logical device capable of being accessed by multiple host systems. Metadata in the logical device that is required in order to access the data in the logical device is overwritten to prevent at...http://www.google.com/patents/US6938136?utm_source=gb-gplus-sharePatent US6938136 - Method, system, and program for performing an input/output operation with respect to a logical storage device