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MEMORY RECOVERY APPARATUS AND METHOD FOR EFFECTIVE DATA RECOVERY AFTER POWER LOSS

机译:掉电后有效数据恢复的存储器恢复设备和方法

摘要

Disclosed are a memory recovery apparatus and method for effective data recovery after a power loss. The memory recovery method may comprise the steps of: determining first user blocks, which are to record data and are selected among a plurality of user blocks to record data, based on a recovery time of a mapping table required by a user; recording a first mapping table in a spare region and last page of the determined first user blocks; switching the first user blocks to second user blocks in which recording of data has been completed when data has been recorded in all the determined first user blocks; recording a second mapping table for the determined second user blocks in a map block; recovering the first mapping table recorded in the determined first user blocks after an abnormal power loss; recovering the second mapping table recorded in the map block in a snapshot form; and identifying the first user blocks, in which the data was stored immediately before the abnormal power loss, by using the first mapping table and the second mapping table.;COPYRIGHT KIPO 2017
机译:公开了一种用于在断电之后进行有效数据恢复的存储器恢复设备和方法。该存储器恢复方法可以包括以下步骤:基于用户所需的映射表的恢复时间,确定要记录数据并且从多个用户块中选择以记录数据的第一用户块;以及将第一映射表记录在所确定的第一用户块的备用区域和最后一页中;当已经在所有确定的第一用户块中记录了数据时,将第一用户块切换到已经完成数据记录的第二用户块;将确定的第二用户块的第二映射表记录在映射块中;异常掉电后,恢复记录在确定的第一用户块中的第一映射表;以快照形式恢复映射块中记录的第二映射表;通过使用第一映射表和第二映射表,识别出在异常断电之前紧接着存储数据的第一用户块。COPYRIGHTKIPO 2017

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