Patent ID: 7529859

Claim:
An article of manufacture for processing an Input/Output (I/O) request, wherein the article of manufacture comprises a computer readable storage medium storing instructions, and wherein the article of manufacture is operable to: allocate at least one data block for use in completing the I/O request; store a current operations record for the I/O request, wherein the current operations record includes a persistent name for a client computer that has been granted permission to complete the I/O request, addresses of the allocated at least one data block, and a timestamp; determine whether the I/O request has been completed within a specified period of time; in response to determining that the I/O request has been completed within the specified period of time, remove the current operations record; in response to determining that the I/O request has not been completed within the specified period of time, fence the allocated at least one data block by marking the at least one data block as allocated; and keep the current operations record; receive an identification message from a client computer, wherein the client computer sends the identification message to attempt to create a connection to a server computer; and in response to receiving the identification message, determine whether the client computer is a rogue client by determining whether a current operations record exists for the client computer, wherein if a current operations record exists for the client computer that is attempting to create the connection with the server computer, then it is determined that the client computer did not complete an I/O request during a previous connection.