Invention Grant
- Patent Title: Performing copies in a storage system
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Application No.: US14737927Application Date: 2015-06-12
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Publication No.: US09361035B1Publication Date: 2016-06-07
- Inventor: John Colgrove , Ethan Miller , John Hayes , Cary Sandvig , Christopher Golden , Jianting Cao , Grigori Inozemtsev
- Applicant: Pure Storage, Inc.
- Applicant Address: US CA Mountain View
- Assignee: Pure Storage, Inc.
- Current Assignee: Pure Storage, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Kennedy Lenart Spraggins LLP
- Agent Edward J. Lenart
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F12/06

Abstract:
A system and method for performing copy offload operations. When a copy offload operation from a first volume (pointing to a first medium) to a second volume (pointing to a second medium) is requested, the copy offload operation is performed without accessing the data being copied. A third medium is created, and the first medium is recorded as the underlying medium of the third medium. The first volume is re-pointed to the third medium. Also, a fourth medium is created, the second volume is re-pointed to the fourth medium, and the second medium is recorded as the underlying medium of the targeted range of the fourth medium. All other ranges of the fourth medium have the second medium as their underlying medium.
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