Merging data volumes and derivative versions of the data volumes

Patent metadata

Field	Value
Publication number	US-9411871-B2
Application number	US-201514886254-A
Country	US
Kind code	B2
Filing date	Oct 19, 2015
Priority date	Oct 6, 2010
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

Responsive to an instruction to collapse a derivative version of an ancestor data volume into the ancestor data volume, it is determined if a characteristic of the derivative version of the ancestor data volume satisfies a criteria relative to a characteristic of the ancestor data volume. If the characteristic of the derivative version satisfies the criteria, the ancestor data volume is merged into the derivative version of the underlying data to form an updated derivative version. The updated derivative version is established as the ancestor data volume.

First claim

What is claimed is:

1. A method of collapsing derivative versions of ancestor virtual disk files, the method comprising:
responsive to an instruction to collapse a derivative version of an ancestor virtual disk file into the ancestor virtual disk file, determining if a characteristic of the derivative version of the ancestor virtual disk file satisfies a criteria relative to a characteristic of the ancestor virtual disk file; and,
if the characteristic of the derivative version satisfies the criteria, merging the ancestor virtual disk file into the derivative version of the ancestor virtual disk file to form an updated derivative version and establishing the updated derivative version as the ancestor virtual disk file.

2. A non-transitory computer readable medium having stored therein program instructions executable by a computer system for collapsing derivative versions of ancestor virtual disk files, that when executed by the computer system, direct the computer system to:
responsive to an instruction to collapse a derivative version of an ancestor virtual disk file into the ancestor virtual disk file, determine if a characteristic of the derivative version of the ancestor virtual disk file satisfies a criteria relative to a characteristic of the ancestor virtual disk file; and,
if the characteristic of the derivative version satisfies the criteria, merge the ancestor virtual disk file into the derivative version of the underlying data to form an updated derivative version and establish the updated derivative version as the ancestor virtual disk file.

3. A data control system for collapsing derivative versions of ancestor virtual disk files comprising:
a processing system configured to execute program instructions directing the processing system to, responsive to an instruction to collapse a derivative version of an ancestor virtual disk file into the ancestor virtual disk file, determine if a characteristic of the derivative version of the ancestor virtual disk file satisfies a criteria relative to a characteristic of the ancestor virtual disk file, and if the characteristic of the derivative version satisfies the criteria, merge the ancestor virtual disk file into the derivative version of the underlying data to form an updated derivative version and establish the updated derivative version as the ancestor virtual disk file; and,
a non-transitory storage system having the program instructions stored thereon.

Assignees

• Quantum Corp

Inventors

• Wade Gregory L
• Haile J Mitchell

Classifications

• G06F16/273 Primary

  Asynchronous replication or reconciliation · CPC title

• G06F16/219

  Managing data history or versioning (querying versioned data G06F16/2474; querying temporal data G06F16/2477) · CPC title

• G06F3/0671

  In-line storage system · CPC title

• G06F3/065

  Replication mechanisms · CPC title

• G06F16/2379

  Updates performed during online database operations; commit processing · CPC title