Invention Grant
US07752170B2 Implementing dynamic copy-on-write (COW) storage compression in COW storage through zero and deleted blocks
失效
通过零和删除的块在COW存储中实现动态写时复制（COW）存储压缩
- Patent Title: Implementing dynamic copy-on-write (COW) storage compression in COW storage through zero and deleted blocks
- Patent Title (中): 通过零和删除的块在COW存储中实现动态写时复制（COW）存储压缩
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Application No.: US11619363Application Date: 2007-01-03
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Publication No.: US07752170B2Publication Date: 2010-07-06
- Inventor: David Charles Boutcher
- Applicant: David Charles Boutcher
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Joan Pennington
- Main IPC: G06F13/00
- IPC: G06F13/00
Abstract:
Methods, apparatus and computer program product implement enhanced dynamic copy-on-write storage compression. For a write operation, a freed block is detected by the COW storage for compressing freed blocks from the COW storage. Responsive to the detected freed block being a previously written block in the COW storage, the previously written block in the COW storage is deleted from the COW storage. Responsive to the detected freed block not being a previously written block in the COW storage, the block is marked as zero in the COW storage.
Public/Granted literature
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