增大UBI根文件系统容量后出现内核崩溃问题求助

环境信息 #

• 平台：iMX6 Solo核心板
• 构建工具：LTIB
• 内核版本：Linux kernel 3.0.25
• U-Boot版本：2009-08
• 烧录工具：MFG工具

问题现象 #

安装新软件包后，rootfs容量从147MiB增至162MiB，设备无法启动，UBI挂载失败，内核崩溃日志如下：

**UBI error: process_eb: bad image sequence number 1588612812 in PEB 720, expected 1344834100** 
UBI error: ubi_attach_mtd_dev: failed to attach by scanning, error -22
UBI error: ubi_init: cannot attach mtd9 

UBIFS error (pid 1): ubifs_mount: cannot open "ubi0:root", error -19
VFS: Cannot open root device "ubi0:root" or unknown-block(0,0) 
Please append a correct "root=" boot option; here are the available partitions: 

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) 

已执行的配置与操作 #

调整U-Boot MFG的CONFIG_BOOTARGS #

#define CONFIG_BOOTARGS  "console=ttymxc1,115200 rdinit=/linuxrc mtdparts=gpmi-nand:4m(boot),256k(bootenv),2m(splashscreen),10m(ramdisk),5m(kernel),5m(flasherkernel),256k(updater),256k(flag1),256k(flag2),170m(rootfs),32m(userpart1),32m(userpart2),-(userpart)"\

ubinize.cfg配置文件 #

[ubifs] 
mode=ubi 
image=ubifs.img 
vol_id=0 
vol_size=170MiB
vol_type=dynamic  
vol_name=root 
vol_flags=autoresize

UBI镜像生成命令 #

sudo mkfs.ubifs -r $ROOTFS -m 4096 -e 253952 -c 1184 -o ubifs.img 
sudo ubinize -o $BUILT_IMG/ubi.img -m 4096 -p 256KiB ubinize.cfg

烧录命令 #

flash_eraseall /dev/mtd9 # Erasing Rootfs partition 
send "file=files/ubi.img" # Sending Root filesystem 
ubiformat /dev/mtd9 -f $FILE -s 4096 -O 4096 # Flashing Root Filesystem

请求解决思路 #

内容的提问来源于stack exchange，提问作者Aîda Brahim