help request, jffs2 fs files get lost

[Angelo Dureghello <angelo70@gmail.com>]

Hi all,

i am looking for some help on an issue with jffs2: i can create jffs2 fs, mount, store edit/write some files, unmount, 
but in a next mount i find no more files/dirs.

MTD probe detect correctly my flash, the chip allows erase sectors of 4KB, or blocks of 64KB. MTD shows correctly a 0x1000 erase size.

/ # / # cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00010000 00001000 "Colilo (64K)"
mtd1: 002f0000 00001000 "Kernel+ROMfs (3008K)"
mtd2: 00100000 00001000 "JFFS2 (1024K)"  <--- want to use this partition only as jffs2 to store non volatile data
mtd3: 0009d000 00001000 "ROMfs"


So from uClinux, i try to prepare the jffs2 fs:

# eraseall /dev/mtd2
erased 1024 Kibyte @ 0 -- 100% complete.

cat /dev/mtd2    i see the flash has been cleared

then i create a folder "backup" in /var with some files and try to crete the jffs2 fs:

mkfs.jffs2 -d backup -o jffs2.img

cp /deV/mtd2 jffs2.img

Then i just mount/umount the device, but i get often the issue decribed.

Any help is really appreciated.

many thanks
angelo