Emc IP Holding Company LLC

Emc Corporation

Lawrence Yetto

Philippe Armangau

Alexei Karaban

Diane Delgado

William C Davenport

Christopher Alan Seibel

John F Gillono

A method is used in managing copying of data in storage systems. A request is received to copy a portion of a source logical object to a target logical object. The source and target logical objects are subject to a deduplicating technique. The portion of the source logical object is copied to the target logical object by updating metadata of the target logical object. The target logical object shares the portion of the source logical object.

Managing copying of data in storage systems

A technique for preserving metadata changes in a transaction log involves coalescing metadata changes based on the block of storage in which the metadata to be changed resides. Metadata change information that accompanies a file system command is stored in nodes of a searchable data structure, wherein each node accumulates metadata changes for a respective block of storage. Once all metadata changes are specified in the searchable data structure, or after some threshold number of metadata changes have been stored, the storage processor composes a transaction for each node summarizing the metadata changes and writes the transaction to the transaction log.

Coalescing transactional same-block writes for virtual block maps

Growing community of inventors

Mont Vernon, NH, United States of America

Lawrence Yetto