File handle banking to provide non-disruptive migration of...

Details File handle banking to provide non-disruptive migration of... File handle banking to provide non-disruptive migration of...

2010-03-31

2011-12-27

Woo, Isaac M (Department: 2155)

Data processing: database and file management or data structures

Database design

Data structure types

C707S802000, C707S822000, C707S828000

Reexamination Certificate

active

08086638

ABSTRACT:
When a directory tree is migrated from a source file system to a target file system, the directories of the directory tree are retained in the source file system, and handle translation entries are substituted for the regular data files of the directory tree in the source file system. The handle translation entries provide new file handles for the regular data files when the source file system is accessed with old file handles of the regular data files. For example, each handle translation entry includes the old file handle, a file system identifier, and the new file handle. The old file handle provides verification of the file handle being used for accessing the handle translation entry, and the file system identifier identifies the target file system in which the new file handle is valid.

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