US 2009/0265706 A1 · COMPUTING MACHINE MIGRATION

Abstract

Systems and methods for migration between computing machines are disclosed. The source and target machines can be either physical or virtual; the source can also be a machine image. The target machine is connected to a snapshot or image of the source machine file system, and a redo-log file is created on the file system associated with the target machine. The target machine begins operation by reading data directly from the snapshot or image of the source machine file system. Thereafter, all writes are made to the redo-log file, and subsequent reads are made from the redo-log file if it contains data for the requested sector or from the snapshot or image if it does not. The source machine continues to be able to run separately and simultaneously after the target machine begins operation.

Claims17

Dependent claims

A method for migrating software running on a source computing machine to a target computing machine comprising:

(a) obtaining an image of the file system associated with the source computing machine,
(b) connecting said image to said target computing machine, and
(c) creating a redo-log file on the file system of said target computing machine,
wherein said target computing machine performs file-system writes to said redo-log file and performs file-system reads from said redo-log file if said redo-log file contains data for the requested sector or from said image if said redo-log file does not contain data for the requested sector, and wherein said source computing machine continues to be able to run separately and simultaneously after the target computing machine begins operation.

1 more element

Dependencies are inferred from the claim text.

Computing machine migration

Life of this patent

Computing machine migration

Life of this patent

Abstract

Claims17