Storage replication systems and methods

摘要

Systems and methods for information storage replication are presented. In one embodiment, a namespace conversion process is performed. Node information regarding a file systems operation change is received. A changed node to pathname object conversion process is performed. An unchanged node to pathname object conversion process is performed. In one exemplary implementation, the changed node to pathname object conversion process and the unchanged node to pathname object conversion process utilize data structures that return the object indications and parent node indications. An object indication is inserted in a pathname.

主权项

1. A method of efficient conversion of information associated with a node during file replication comprising:
receiving node information regarding an operation change of a particular node in a file system; determining that the received node information is associated with the particular node of the file system identified in a file change log; in the event the received node information associated with the particular node identified in the file change log corresponds to namespace changes of the particular node between session checkpoints, performing a changed node to pathname object conversion process on the received node information using a name space conversion component, wherein said changed node to pathname object conversion process utilizes a name space alteration tracking data structure to determine a changed object indicator; in the event the received node information associated with the particular node identified in the file change log does not correspond to namespace changes of the particular node between session checkpoints, performing an unchanged node to pathname object conversion process on the received node information using the name space conversion component, wherein said unchanged node to pathname object conversion process utilizes a longest path tracking data structure to determine an unchanged object indicator; inserting the changed or unchanged object indicator in a pathname of the particular node based upon results of at least one of said changed node to pathname object conversion process and said unchanged node to pathname object conversion process; forwarding said pathname with said inserted object indicator to a target storage resource; receiving a call to roll back one or more changes between session checkpoints for the particular node using a roll back interface and a marker uniquely identifying an entry in the file change log; and restarting conversion of the node information associated with the particular node during file replication from a point indicated by the marker.