Oracle International Corporation

Richard J Morris

Mark Maybee

Mark Shellenbaum

Reza Sabdar

Michael Leroy Gerdts

Waikwan Hui

Peter W Cudhea

Implementations of the present disclosure involve a system and/or method for replication size estimation and progress monitoring for a file system residing on a computing system. The replication progress monitoring system obtains a first snapshot of a file system for a first point in time and a second snapshot of the file system for a second point in time. The system may then calculate the difference between the first snapshot size from the second snapshot size and add to the difference the size a released data size. The released data size includes the size of any blocks of data included in the first snapshot and released before the second snapshot was taken. The replication transfer size may then be estimated by adding the snapshot size difference with the released size estimate.

Method and apparatus for replication size estimation and progress monitoring

Implementations described and claimed herein provide systems and methods for resumable replication. In one implementation, an interruption in a transfer between a source and a target is identified. The transfer includes a send stream generated by the source and configured for receipt by the target. The send stream includes one or more snapshots of the source. A receive checkpoint generated by the target is received at the source. The receive checkpoint indicates data successfully received into the target during the transfer prior to the interruption. The transfer is resumed based on the received checkpoint. The resumed transfer skips any of the one or more snapshots and all data in a resumable snapshot already existing on the target. A complete transfer from the source to the target is verified using a chain of custody.

Systems and methods for resumable replication

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Newton, MA, United States of America

Richard J Morris