Preserving snapshots during disk-based restore

Details Preserving snapshots during disk-based restore Preserving snapshots during disk-based restore

2007-04-17

2007-04-17

Baderman, Scott (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S015000, C714S019000, C711S162000, C707S793000, C707S793000

Reexamination Certificate

active

10261168

ABSTRACT:
The present invention provides a method for providing snapshots of data at different times and for performing rollbacks to a selected snapshot that does not result in any subsequent snapshots being rendered unusable. The method includes a mapping mechanism wherein when a map entry for a block being written to for the first time during a session exists, then another map entry is created and all later sessions are applied to it. When a map entry for the block does not exist, a new map entry is provided and all prior sessions are applied to it.

REFERENCES:
patent: 5325519 (1994-06-01), Long et al.
patent: 5495607 (1996-02-01), Pisello et al.
patent: 5644701 (1997-07-01), Takewaki
patent: 5768496 (1998-06-01), Lidgett et al.
patent: 5873101 (1999-02-01), Klein
patent: 5905506 (1999-05-01), Hamburg
patent: 6016553 (2000-01-01), Schneider et al.
patent: 6047294 (2000-04-01), Deshayes et al.
patent: 6209000 (2001-03-01), Klein et al.
patent: 6434681 (2002-08-01), Armangau
patent: 6487561 (2002-11-01), Ofek et al.
patent: 6594744 (2003-07-01), Humlicek et al.
patent: 6618794 (2003-09-01), Sicola et al.
patent: 6665815 (2003-12-01), Goldstein et al.
patent: 6701456 (2004-03-01), Biessener
patent: 6732125 (2004-05-01), Autrey et al.
patent: 6771843 (2004-08-01), Huber et al.
patent: 6804755 (2004-10-01), Selkirk et al.
patent: 6892211 (2005-05-01), Hitz et al.
patent: 6915397 (2005-07-01), Lubbers et al.
patent: 6934822 (2005-08-01), Armangau et al.
patent: 7072916 (2006-07-01), Lewis et al.
patent: 7100006 (2006-08-01), Durrant et al.
patent: 2001/0049704 (2001-12-01), Hamburg et al.

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