- 专利标题： Shingled magnetic recording drive mapping using non-volatile random access memory for persistent updates
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申请号： US15807943申请日： 2017-11-09
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公开(公告)号： US10423364B2公开(公告)日： 2019-09-24
- 发明人: Carlos D. Cavanna , Ann Corrao , Robert Francis , Ronen Grosman , Hamdi Roumani , Ao Wan
- 申请人： International Business Machines Corporation
- 申请人地址： US NY Armonk
- 专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址： US NY Armonk
- 代理机构： Garg Law Firm, PLLC
- 代理商 Rakesh Garg; Aaron Pontikos
- 主分类号： G06F12/00
- IPC分类号： G06F12/00 ; G06F3/06 ; G11B5/012
摘要：
A request for changing data of a file system data structure stored on a shingled magnetic recording (SMR) drive is received. The data change is logged in a log entry of a log structure stored in a non-volatile random access memory (NVRAM). The log entry is added as a new entry at an end of the log structure. The log entry is marked within the NVRAM as modified and a predetermined criterion is determined to be satisfied. Responsive to determining that the predetermined criterion is satisfied, the NVRAM is searched for log entries marked as modified. The modified log entries are stored to the SMR drive.
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