Invention Grant
US07793166B2 Methods and systems for recovering meta-data in a cache memory after a corruption event
有权
在破坏事件之后,在缓存中恢复元数据的方法和系统
- Patent Title: Methods and systems for recovering meta-data in a cache memory after a corruption event
- Patent Title (中): 在破坏事件之后,在缓存中恢复元数据的方法和系统
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Application No.: US11563467Application Date: 2006-11-27
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Publication No.: US07793166B2Publication Date: 2010-09-07
- Inventor: Zvi Gabriel Benhanokh , Matthew Ivester , Ran Margalit
- Applicant: Zvi Gabriel Benhanokh , Matthew Ivester , Ran Margalit
- Applicant Address: US MA Hopkinton
- Assignee: EMC Corporation
- Current Assignee: EMC Corporation
- Current Assignee Address: US MA Hopkinton
- Agency: Muirhead and Saturnelli, LLC
- Main IPC: G06F11/00
- IPC: G06F11/00

Abstract:
A method for recovering meta-data that has been subjected to corruption is disclosed for a cache memory. Each table entry in the cache memory has an in-cache indicator for indicating whether the data unit associated therewith is stored in a cache-slot in the cache memory. A first review is conducted of the table entries for identifying in-cache table entries (those that are associated with cache-slots in the cache memory), performing a correction attempt to ensure that the meta-data in an in-cache table entry are validated and corrected, if necessary, and ensuring that the in-cache indicator is set for an in-cache table entry. A second review is conducted of the table entries to ensure that the in-cache indicator is not set for any table entry that is not an in-cache table entry or for any in-cache table entry for which the correction attempt was unsuccessful.
Public/Granted literature
- US20080126841A1 METHODS AND SYSTEMS FOR RECOVERING META-DATA IN A CACHE MEMORY AFTER A CORRUPTION EVENT Public/Granted day:2008-05-29
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