Invention Grant
- Patent Title: Granular unmapping with variable addressing in a data store
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Application No.: US15672339Application Date: 2017-08-09
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Publication No.: US10296454B2Publication Date: 2019-05-21
- Inventor: Prasad Rao Jangam , Asit Desai , Prasanna Aithal , Bryan Branstetter , Mahesh S Hiregoudar , Srinivasa Shantharam , Pradeep Krishnamurthy , Raghavan Pichai , Rohan Pasalkar
- Applicant: VMWARE, INC.
- Applicant Address: US CA Palo Alto
- Assignee: VMware, Inc.
- Current Assignee: VMware, Inc.
- Current Assignee Address: US CA Palo Alto
- Priority: IN201741008770 20170314
- Main IPC: G06F12/02
- IPC: G06F12/02 ; G06F3/06

Abstract:
The systems described herein are configured to enhance the efficiency of memory in a host file system with respect to hosted virtual file systems. In situations when the hosted virtual file systems use smaller file block sizes than the file block sizes of the host file system. During storage of a file, a file block is assigned a block address and unmapping bits. The block address and unmapping bits are stored in a pointer block or other similar data structure associated with the file. Particularly, the block address is stored in a first address block and the unmapping bits are stored in at least one additional address block located in proximity to the block address, such that the unmap granularity of the file is not limited by the fixed size of address blocks in the system.
Public/Granted literature
- US20180267894A1 GRANULAR UNMAPPING WITH VARIABLE ADDRESSING IN A DATA STORE Public/Granted day:2018-09-20
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