jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0064ffe4: 0x0011 in

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本文介绍jffs2文件系统的错误提示及其含义，包括magic bitmask未找到的问题，同时解释了页大小、块大小及分区总空间的具体数值。

jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0064ffe4: 0x0011 in

./mkfs.jffs2 -s 0x1000 -e 0x40000 -p 0x500000 -d rootfs/ -o rootfs.jffs2
说明：
页大小0x1000 4k
块大小0x40000 64k
jffs2分区总空间0x500000即5M
当然生成的jffs2.img并没有一下子分配5M,还是实际大小0xc0000

whereisdog
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ffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000000: 0x0003 instead
qq_21948547的博客
06-22 1228
jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000000: 0x0003 instead jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000004: 0x0001 instead jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00
zynq linux内核出错,Zynq-Linux移植学习笔记（二十五）——新内核JFFS2文件系统CRC错误解决...
weixin_39564755的博客
04-30 670
1、背景介绍最近为了使用PCIe驱动，对Linux内核进行了升级，目前ZYNQ发布的最新版内核为2017.4(对应内核版本4.9)，升级虽然解决了PCIe驱动问题，但却引入了另一个奇怪的问题-挂载JFFS2文件系统时会出现如下错误：jffs2: jffs2_scan_eraseblock(): Node at 0x0000225c {0x1985, 0xe002, 0xe002e002) has ...
jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x000a0000: 0x3030 instead 问题分析
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嵌入式设备中，如果系统打印出很多类似这样的的消息：jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x000a0000: 0x3030 instead 可以确认的是系统在挂载jffs文件系统的时候出错了。我有遇到出多次，总体分为两类： （1）调整分区表之后出现这样的情况，或是更换文件系统的时候出现............
jffs2_scan_eraseblock():magic bitmask xxx not found at xxx
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如下图示例，我下载的实际uboot文件大小为168K，我给uboot设置的分区大小为256K，按照一个扇区64k字节大小，如果擦除整个分区的话，应该要擦除4个sector,下面图中应该显示为First 0x0 last 0x3才对，但是他的结果为First 0x0 last 0x2，这就是因为我当时把擦除面积设置为了实际文件大小，我的文件大小为168K，3*64=192 > 168,所以系统默认只擦除3个sector给我存放uboot.bin）重新用这条命令下载，擦除和写入，就可以解决上面图中的问题了。
内核挂载JFFS2文件系统出现的问题：jffs2_scan_eraseblock() magic bitmask 0x1985 not found at instead
哲的专栏
07-25 1万+
上周在做HI3521开发板烧写根文件系统后，再次启动后一直出现jffs2文件系统挂载不上的情况，就如题目上jffs2_scan_eraseblock() magic bitmask 0x1985 not found at instead；这种情况一直打印，直到打印“累了”才不再打印（呵呵），其实上周五就跟这个套件公司沟通过，看是出了什么问题，今天又问了一天，看来以后是不能指望他们给解决技术问题了，
关于flash分区打印信息jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985
shuijingshizhe的博客
02-09 8595
uboot中的bootargs设置如下： bootargs=noinitrd console=ttyS0,115200n8 maxcpus=1mem=240Mmtdparts=S29GL:768K(boot),128K(env),15M(system),13M(rootfs),-(custfs);spi1.0:640k(uboot),320k(env),64k(mac),6M(system)
Preparing for system initialization ---------[ 19.446124] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000000: 0x1881 instead [ 19.474706] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000004: 0x0004 instead [ 19.503190] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000008: 0x0001 instead [ 19.531621] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000000c: 0x0391 instead [ 19.560049] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000010: 0x2f28 instead [ 19.588480] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000014: 0x4e2c instead [ 19.616907] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000018: 0xec86 instead [ 19.645334] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000001c: 0x119e instead [ 19.673759] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000020: 0xad65 instead [ 19.702184] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000024: 0xb140 instead [ 19.730610] jffs2: Further such events for this erase block will not be printed [ 19.753987] random: fast init done [ 19.775170] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010000: 0x1800 instead [ 19.803599] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010004: 0x0008 instead [ 19.832025] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010008: 0x30b0 instead [ 19.860450] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0001000c: 0xba61 instead [ 19.888877] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010010: 0x53b7 instead [ 19.917302] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010014: 0xe9ef instead [ 19.945726] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010018: 0xc933 instead [ 19.974151] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0001001c: 0x4179 instead [ 20.002575] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010020: 0xe3bd instead [ 20.031001] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010024: 0x2d83 instead [ 20.059424] jffs2: Further such events for this erase block will not be printed [ 20.093711] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020000: 0x1080 instead [ 20.122140] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020004: 0x0008 instead [ 20.150567] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020008: 0x3000 instead [ 20.178995] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0002000c: 0xd872 instead [ 20.207420] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020010: 0xb15e instead [ 20.235846] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020014: 0xe99f instead [ 20.264271] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020018: 0xc2e9 instead [ 20.292694] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0002001c: 0xc147 instead [ 20.321261] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020020: 0xc2ab instead [ 20.349698] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020024: 0x60ca instead [ 20.378122] jffs2: Further such events for this erase block will not be printed [ 20.412415] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030000: 0x0804 instead [ 20.440844] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030004: 0x0008 instead [ 20.469273] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030008: 0x1091 instead [ 20.497699] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0003000c: 0x74e7 instead [ 20.526123] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030010: 0x0d0c instead [ 20.554547] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030014: 0x4dfb instead [ 20.582972] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030018: 0xcf68 instead [ 20.611399] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0003001c: 0x0dd1 instead [ 20.639824] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030020: 0xf77e instead [ 20.668249] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00030024: 0xcc9b instead [ 20.696673] jffs2: Further such events for this erase block will not be printed [ 20.730985] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040000: 0x1901 instead [ 20.759416] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040008: 0xb030 instead [ 20.787844] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0004000c: 0xa543 instead [ 20.816269] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040010: 0x0bc3 instead [ 20.844694] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040014: 0x684c instead [ 20.873119] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040018: 0xaeb5 instead [ 20.901545] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0004001c: 0x9c6f instead [ 20.929969] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040020: 0x9e9b instead [ 20.958394] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040024: 0x79cb instead [ 20.986818] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040028: 0x1167 instead [ 21.015240] jffs2: Further such events for this erase block will not be printed [ 21.049544] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050000: 0x0885 instead [ 21.077972] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050004: 0x000c instead [ 21.106398] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050008: 0xa021 instead [ 21.134824] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0005000c: 0x65c7 instead [ 21.163248] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050010: 0xeb76 instead [ 21.191676] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050014: 0xeec0 instead [ 21.220102] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050018: 0x5b3c instead [ 21.248527] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0005001c: 0x443a instead [ 21.276952] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050020: 0xcfc3 instead [ 21.305376] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00050024: 0xc576 instead [ 21.333801] jffs2: Further such events for this erase block will not be printed [ 21.368049] jffs2: Old JFFS2 bitmask found at 0x0005fa44 [ 21.383973] jffs2: You cannot use older JFFS2 filesystems with newer kernels [ 21.405202] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060000: 0x0801 instead [ 21.433630] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060008: 0x10b1 instead [ 21.462059] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006000c: 0xe282 instead [ 21.490483] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060010: 0xf1cd instead [ 21.518908] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060014: 0x7996 instead [ 21.547332] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060018: 0x802e instead [ 21.575758] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006001c: 0x0472 instead [ 21.604185] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060020: 0xb9a0 instead [ 21.632610] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060024: 0x1a3e instead [ 21.661034] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060028: 0x8395 instead [ 21.689456] jffs2: Further such events for this erase block will not be printed [ 21.733806] random: crng init done mount_dataFs done mount: mounting /dev/mtdblock4 on /tplink/image [ 22.403081] mvcpss: loading out-of-tree module taints kernel. failed: Invalid [ 22.422704] mvcpss: Function PCI loaded argument [ 22.439540] mvdma mvdma: Device created, major 245, minor 1 [ 22.460787] mvdma mvDma: assigned reserved memory node buffer@0x200000000 [ 22.481174] mvdma mvDma: Platform device driver registered [ 22.497912] mvcpss: Function DMA2 loaded [ 22.514668] mvMbusDrv mvMbusDrv: Device created, major 244, minor 1 [ 22.537940] mvcpss: Function MBUS loaded [ 22.549997] Version: 2.00 [ 22.558151] mvcpss: Function ETH loaded [ 22.572381] mvIntDrv mvIntDrv: Device created, major 243, minor 1 [ 22.595258] mvcpss: Function INT loaded --------------- Done /etc/fep_start_system.sh: cd: line 173: can't cd to /fep/bin: No such file or directory /etc/fep_start_system.sh: line 180: /tplink/app/sbin/switchInit: not found /etc/fep_start_system.sh: line 183: ./tprdMonitor: not found sh: can't open 'loop_check.sh': No such file or directory 交换机启动时，这样的报错是什么意思，该怎么解决
最新发布
12-05
那些反复出现的"Magic bitmask 0x1985 not found"错误表明内核在尝试读取存储设备时，发现数据块的头部信息不符合jffs2文件系统的标准格式。特别值得注意的是这条关键信息："You cannot use older JFFS2 filesystems...
jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x01960008: 0x0080 instead
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好的，用户遇到了JFFS2文件系统中的magic bitmask错误，提示是“jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x000a0000: 0x3030 instead”。我需要根据提供的引用内容来整理解决方案。 首先，...
jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x004c0000: 0x8888 instead
08-01
当系统日志中出现类似 `jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x004c0000: 0x8888 instead` 的错误信息时，表明JFFS2在挂载过程中无法识别预期的魔数（Magic Number）`0x1985`，而是读取到了...
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[ 13.691504] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000000: 0x00c0 instead [ 13.710406] jffs2_scan_eraseblock(): Mag...
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jffs2_scan_eraseblock(): Magic bitmask解决 2010-01-18 00:09:23 分类： 嵌入式 找到答案了：   耶！！！！！！！！！！ 转载自  http://blog.chinaunix.net/uid-8391208-id-1739703.html http://hi.baidu.com/yysirius/blog/i
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具体的输入信息是这样的。 uboot> http Link down: eth0 Ethernet mode (duplex/speed): 1/1000 Mbps HTTP server is starting at IP: 192.168.0.250 HTTP server is ready! Request for: / Request for: /style...
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openwrt系统启动过程中，文件系统异常测试环境测试目的测试过程及分析 测试环境 拓扑环境：openwrt系统+板子 测试目的 正常启动 测试过程及分析 启动过程中，板子出现以下相关打印，文件系统异常 jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00193000: 0x1831 instead 相关命令权...
jffs2_scan_eraseblock(): Magic bitmask 0x1985 的解决办法
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于是尝试将menuconfig 中的 Device Drivers > Memory Technology Device (MTD) support > SPI-NOR device support->Use small 4096 B erase sectors 选项取消选中，将[*]改为[ ]，如下图。在网上找了很多网页资料，这是由于flash 不支持4k块擦除导致的，需要在spi-nor.c中将。最近在给V3S的flash烧录jffs文件系统镜像结果出现了如下图所示这种打印。
jffs2_scan_eraseblock
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jffs2: Further such events for this erase block will not be printed[ 17.231225] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00dd0000: 0x0ff0 instead[ 17.240860] jffs2:...
嵌入式 jffs2问题“ jffs2_scan_eraseblock(): Magic和Empty Flash at”
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文件系统制作：          以前的内核系统支持的是yaffs文件系统，现在使用的是yaffs2文件系统，因此需要不同的制作工具，我们在此把它称为mkyaffs2image，按照上面的命令解压后它会被安 装到/usr/sbin目录下，并产生2个文件：mkyaffs2image 和mkyaffs2image-128M。 yaffs： #mkyaffs2image root_q
挂接根文件系统时出现错误 jffs2_scan_eraseblock():
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drivers/rtc/hctosys.c: unable to open rtc device (rtc0) jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x003b8e30: 0x0100 instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at...
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su_linux的专栏
09-18 1761
http://www.linux-mtd.infradead.org/faq/jffs2.html I cannot mount JFFS2 and see "Magic bitmask 0x1985 not found" messages If you cannot mount your JFFS2 file system and you see many messages like
嵌入式Linux之启动报错jffs2
weixin_30693683的博客
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问题： 　　启动报错jffs2 1 jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000000: 0x1f70 instead 2 jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000004: ...
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