Hybrid backup and restore of very large file system using metadata image backup and traditional backup

A mechanism performs a metadata image backup of a hierarchical storage management (HSM) file system. Concurrent with performing the metadata image backup of the HSM file system, the mechanism identifies a set of resident files that are not yet stored off-line in the HSM file system. The mechanism id...

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Bibliographic Details
Main Authors WAYNE SAWDON, NEETA GARIMELLA, STEVEN BERMAN
Format Patent
LanguageEnglish
Published 24.09.2014
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A mechanism performs a metadata image backup of a hierarchical storage management (HSM) file system. Concurrent with performing the metadata image backup of the HSM file system, the mechanism identifies a set of resident files that are not yet stored off-line in the HSM file system. The mechanism identifies immutable files within the set of resident files to form an optimized set of resident files and passes the optimized set of resident files to a traditional backup system. The traditional backup system backs up file data for the set of resident files. Responsive to detecting an inability to restore a migrated managed state of a file, the mechanism unsets an immutable bit of the file attribute, restores file data for the file using the traditional backup system, and sets the immutable bit attribute of the file.
Bibliography:Application Number: GB20130002917