Patent ID: 7433898
Filing Date: 2008-10-07
Classification: G06F,Y10S

Abstract:
1. A method for use in a shared storage system, the method comprising: detecting a change to file system metadata stored in a first computer of multiple computers having access to the shared storage system; creating a journal, the journal identifying executed operational steps used to change the file system metadata stored in the first computer; storing the journal to the shared storage system, storage of the journal enabling a second computer to subsequently retrieve and execute at least portions of the journal to carry out the executed operational steps to modify the file system metadata of the shared storage system in accordance with a failed attempt by the first computer to change a copy of the file system metadata in the shared storage system; maintaining access right schedule information, the access right schedule information identifying which of the multiple computers had access to different regions of the shared storage at different times; and storing at least a portion of the access right schedule information to the journal.