CN107102821A - 一种nand flash阵列写失败的处理方法 - Google Patents

一种nand flash阵列写失败的处理方法 Download PDF

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Publication number
CN107102821A
CN107102821A CN201710266509.4A CN201710266509A CN107102821A CN 107102821 A CN107102821 A CN 107102821A CN 201710266509 A CN201710266509 A CN 201710266509A CN 107102821 A CN107102821 A CN 107102821A
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nand flash
write
page
failure
processing method
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尹超
赵鑫鑫
李朋
姜凯
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Jinan Inspur Hi Tech Investment and Development Co Ltd
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Jinan Inspur Hi Tech Investment and Development Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0614—Improving the reliability of storage systems
    • G06F3/0619—Improving the reliability of storage systems in relation to data integrity, e.g. data losses, bit errors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0629—Configuration or reconfiguration of storage systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0638—Organizing or formatting or addressing of data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0638—Organizing or formatting or addressing of data
    • G06F3/064—Management of blocks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
    • G06F3/0647—Migration mechanisms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0683—Plurality of storage devices
    • G06F3/0688—Non-volatile semiconductor memory arrays

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

本发明特别涉及一种NAND FLASH阵列写失败的处理方法。该NAND FLASH阵列写失败的处理方法，当NAND FLASH阵列在写过程中出现写错误时，从备用块RAM表中查找一个可替换块的地址，并将数据搬移到新的替换块中。该NAND FLASH阵列写失败的处理方法，能够实现NAND FLASH阵列坏块的替换及数据搬移，保证了数据的完整。

Description

一种NAND FLASH阵列写失败的处理方法
技术领域
本发明涉及高速大容量存储技术领域，特别涉及一种NAND FLASH阵列写失败的处理方法。
背景技术
NAND FLASH作为一种新兴的存储设备，由于存储容量大及成本低等特点，在许多领域已经替代了NOR FLASH。但是由于NAND FLASH的特性，NAND FLASH存储经常会出现坏块，导致数据无法写入。
基于上述情况，本发明提出了一种NAND FLASH阵列写失败的处理方法。
发明内容
本发明为了弥补现有技术的缺陷，提供了一种简单高效的NAND FLASH阵列写失败的处理方法。
本发明是通过如下技术方案实现的：
一种NAND FLASH阵列写失败的处理方法，其特征在于：当NAND FLASH阵列在写过程中出现写错误时，从备用块RAM表中查找一个可替换块的地址，并将数据搬移到新的替换块中。
所述NAND FLASH阵列写失败的处理方法，包括以下步骤：
（1）首先，当NAND FLASH阵列出现写错误时，Page计数器指针初始化为0，并记录当前出错时NAND FLASH的写入Page地址；
（2）根据NAND FLASH阵列的行列号，确定出现错误的NAND FLASH，并从对应的备用块RAM表中查找替换块，确定新的BLOCK地址；
（3）向出错的NAND FLASH发送读Cache命令，将未写入NAND FLASH中的数据写入RAM中保存下来；
（4）判读当前的Page指针是否等于出错时的Page地址，如果不相等，则发送CopyBackRead命令，读取Page指针对应地址的数据到Cache中，然后通过CopyBack Write命令将Cache数据写入新的BLOCK 对应Page指针的地址，然后Page指针加1，继续判断Page指针是否等于出错时的Page地址；如果Page指针等于出错时的Page地址，则将RAM中保存的内容通过普通写命令写入新的BLOCK的对应Page地址，否则继续执行相应的CopyBack命令进行数据搬移。
所述步骤（3）中，RAM大小须能存储NAND FLASH Cache内容。
本发明的有益效果是：该NAND FLASH阵列写失败的处理方法，能够实现NANDFLASH阵列坏块的替换及数据搬移，保证了数据的完整。
附图说明
附图1为本发明NAND FLASH阵列写失败的处理方法示意图。
具体实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图和实施例，对本发明进行详细的说明。应当说明的是，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
该NAND FLASH阵列写失败的处理方法，当NAND FLASH阵列在写过程中出现写错误时，从备用块RAM表中查找一个可替换块的地址，并将数据搬移到新的替换块中。
该NAND FLASH阵列写失败的处理方法，包括以下步骤：
（1）首先，当NAND FLASH阵列出现写错误时，Page计数器指针初始化为0，并记录当前出错时NAND FLASH的写入Page地址；
（2）根据NAND FLASH阵列的行列号，确定出现错误的NAND FLASH，并从对应的备用块RAM表中查找替换块，确定新的BLOCK地址；
（3）向出错的NAND FLASH发送读Cache命令，将未写入NAND FLASH中的数据写入RAM中保存下来；
（4）判读当前的Page指针是否等于出错时的Page地址，如果不相等，则发送CopyBackRead命令，读取Page指针对应地址的数据到Cache中，然后通过CopyBack Write命令将Cache数据写入新的BLOCK 对应Page指针的地址，然后Page指针加1，继续判断Page指针是否等于出错时的Page地址；如果Page指针等于出错时的Page地址，则将RAM中保存的内容通过普通写命令写入新的BLOCK的对应Page地址，否则继续执行相应的CopyBack命令进行数据搬移。
所述步骤（3）中，RAM大小须能存储NAND FLASH Cache内容。

Claims (3)

1.一种NAND FLASH阵列写失败的处理方法，其特征在于：当NAND FLASH阵列在写过程中出现写错误时，从备用块RAM表中查找一个可替换块的地址，并将数据搬移到新的替换块中。
2.根据权利要求1所述的NAND FLASH阵列写失败的处理方法，其特征在于，包括以下步骤：
（1）首先，当NAND FLASH阵列出现写错误时，Page计数器指针初始化为0，并记录当前出错时NAND FLASH的写入Page地址；
（2）根据NAND FLASH阵列的行列号，确定出现错误的NAND FLASH，并从对应的备用块RAM表中查找替换块，确定新的BLOCK地址；
（3）向出错的NAND FLASH发送读Cache命令，将未写入NAND FLASH中的数据写入RAM中保存下来；
（4）判读当前的Page指针是否等于出错时的Page地址，如果不相等，则发送CopyBackRead命令，读取Page指针对应地址的数据到Cache中，然后通过CopyBack Write命令将Cache数据写入新的BLOCK 对应Page指针的地址，然后Page指针加1，继续判断Page指针是否等于出错时的Page地址；如果Page指针等于出错时的Page地址，则将RAM中保存的内容通过普通写命令写入新的BLOCK的对应Page地址，否则继续执行相应的CopyBack命令进行数据搬移。
3.根据权利要求2所述的NAND FLASH阵列写失败的处理方法，其特征在于：所述步骤（3）中，RAM大小须能存储NAND FLASH Cache内容。
CN201710266509.4A 2017-04-21 2017-04-21 一种nand flash阵列写失败的处理方法 Pending CN107102821A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108920293A (zh) * 2018-06-28 2018-11-30 郑州云海信息技术有限公司 固态硬盘写失败的处理方法和固态硬盘
CN109002265A (zh) * 2018-07-26 2018-12-14 浪潮电子信息产业股份有限公司 一种数据处理的方法以及相关装置
CN109857347A (zh) * 2019-03-05 2019-06-07 广东省气象探测数据中心 基于flash的内嵌式地面气象数据可靠固化方法

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CN104765695A (zh) * 2015-04-03 2015-07-08 上海交通大学 一种nand flash坏块管理系统及方法
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CN102063380A (zh) * 2010-12-31 2011-05-18 北京握奇数据系统有限公司 一种向非易失性存储器写入数据的方法及装置
CN102331911A (zh) * 2011-06-17 2012-01-25 杭州华三通信技术有限公司 用于文件系统向Nand Flash写数据的驱动装置及方法
CN104166627A (zh) * 2014-09-02 2014-11-26 科大智能电气技术有限公司 一种基于单片机的nand-flash写操作方法
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108920293A (zh) * 2018-06-28 2018-11-30 郑州云海信息技术有限公司 固态硬盘写失败的处理方法和固态硬盘
CN109002265A (zh) * 2018-07-26 2018-12-14 浪潮电子信息产业股份有限公司 一种数据处理的方法以及相关装置
CN109002265B (zh) * 2018-07-26 2021-12-17 浪潮电子信息产业股份有限公司 一种数据处理的方法以及相关装置
CN109857347A (zh) * 2019-03-05 2019-06-07 广东省气象探测数据中心 基于flash的内嵌式地面气象数据可靠固化方法

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