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UBIFS wear leveling 后台线程

ubifs轻松上路 这是一个专门针对flash优化的fs. 本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u2/66419/showart_1960014.html

by xw_max - Linux文档专区 - 2009-06-09 17:56:14 阅读(715) 回复(0)

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ubifs: 由IBM、nokia工程师Thomas Gleixner,Artem Bityutskiy等人于2006年发起,致力于开发性能卓越、扩展性高的FLASH专用文件系统,以解决当前嵌入式环境下以FLASH作为MTD设备使用时的技术瓶颈, 开发背景: FLASH特性: FLASH是一类电可擦出可编程存储体,在使用方式上与硬磁盘最大不同是: faq/general.html What are the differences between flash devices and hard drives? FLASH文件系统所必须的关键技术: 1. 由于FLASH...

by soararing - AIX文档中心 - 2008-12-15 16:59:56 阅读(2169) 回复(0)

本帖最后由 shuimuyu 于 2013-12-26 14:53 编辑 环境介绍:在2.6.27版本kernel上,512MByte 的 nand flash上采用UBI文件系统,共有四个分区,最后一个分区256M大小 问题:在系统反复重启的过程中,在挂载256M分区后(即mount之后,对flash文件进行读写时),有时会报如下错误 ubifs error (pid 23713): ubifs_read_node: bad node type (160 but expected 0) ubifs error (pid 23713): ubifs_read_node: bad node ...

by shuimuyu - 嵌入式开发 - 2013-12-27 09:51:11 阅读(2365) 回复(3)

isworld class runescape gp store online. We have been experienced wow power leveling runescape gamers for years, so that we know what the game RuneScape Gold| wow gold Runescape Money|Runescape Items,BETA ]9 Jul 2007 ... RuneScapeGold|RunescapeMoney|RunescapItems,Accounts,Power leveling lotro gold Mall - Runescape Money Runescape Accounts Runescape Equipments ...Gold ,Runescape Money, Runescape...

by sbsdsn - Linux文档专区 - 2008-09-18 13:37:12 阅读(638) 回复(0)

Most MMO gamers want to buy the cheapest wow gold in the best quanlity. Then they search online. However, they always consult some sites to announce that there are a great amount of cheap wow power leveling there. They are hesitate wether to buy or not as they are worried about the quanlity. Now let’s tell you the truth of cheap wow power leveling. Since the competition of the game market, the ...

by aiongold123 - Solaris文档中心 - 2010-02-23 09:46:13 阅读(2389) 回复(0)

rs gold leveling Guide Reviews Those of you new to the runescape gold community have a load of questions, one of runescape money the most common being what is a World of rs gold Warcraft leveling guide? The short wow gold answer is that it wow gold is one of the ways for you to learn how to ascend through the game by becoming more powerful within wow gold the Alliance faction. The long a...

by sanren02 - HP文档中心 - 2008-08-26 23:22:49 阅读(1610) 回复(1)

ubifs磨损平衡是在哪个层面上作的? 是否夸MTD分区? 如果有16G Nand, 分成两个MTD分区15G/1G。磨损平衡是在一个分区里分别平衡,还是在整个Nand芯片平衡? 如果软件一直只往1G分区写数据,是1G分区先磨损完,还是整个Nand芯片同时磨损完? 感觉应该是在文件系统层面进行,因而不会夸MTD分区。而且不同分区可以用不同的文件系统,不同的文件系统磨损平衡的机制不一样。 要涉及的细节太多,看不过来,想走点捷径,在这里咨询一下,谢...

by linuxfellow - 内核源码 - 2014-04-15 07:50:40 阅读(899) 回复(0)

用的是Mini6410,1G Nandfalsh,用友善提供的文件系统,启动信息如下 UBI: attaching mtd2 to ubi0 UBI: physical eraseblock size: 131072 bytes (128 KiB) UBI: logical eraseblock size: 129024 bytes UBI: smallest flash I/O unit: 2048 UBI: sub-page s...

by wgetfree - 嵌入式开发 - 2011-02-12 12:57:27 阅读(6741) 回复(2)

(以下内容转发自K093期谭校长的邮件) # "system" partition: begin=0x700000 size=0x6000000 (96MB)# size of PEB:0x20000 (128KB)# size of LEB:0x1F000 (124KB 126976)# -m : 2KiB# -e : 124KB# -c : Number-of-PEB=0x6000000/0x20000=0x300, 10 blocks are reserved for bad block handling, so# Number-of-LEB=0x300 - 0xA=0x2f6(or 758)# vol_size= Nu...

by conke - MaxWit & g-bios - 2010-06-17 13:11:28 阅读(2841) 回复(1)

ubifs轻松上路 第一、什么是ubifs? 由IBM、nokia工程师Thomas Gleixner,Artem Bityutskiy等人于2006年发起,致力于开发性能卓越、扩展性高的FLASH专用文件系统,以解决当前嵌入式环境下以FLASH作为MTD设备使用时的技术瓶颈。 关键字: UBI:一种类似于LVM的逻辑卷管理层。主要实现损益均衡,逻辑擦除块、卷管理,坏块管理等。 ubifs:基于UBI的FLASH日志文件系统。 有关ubifs的详细介绍,请参考: http://www.linux-mt...

by iibull - Linux文档专区 - 2009-10-10 20:27:06 阅读(7695) 回复(0)

第一、什么是ubifs? 由IBM、nokia工程师Thomas Gleixner,Artem Bityutskiy等人于2006年发起,致力于开发性能卓越、扩展性高的FLASH专用文件系统,以解决当前嵌入式环境下以FLASH作为MTD设备使用时的技术瓶颈。 关键字: UBI:一种类似于LVM的逻辑卷管理层。主要实现损益均衡,逻辑擦除块、卷管理,坏块管理等。 ubifs:基于UBI的FLASH日志文件系统。 有关ubifs的详细介绍,请参考: http://www.linux-mtd.infradead.org/doc/ub...

by soararing - Linux文档专区 - 2009-03-26 09:54:06 阅读(605) 回复(0)