hi,all:
I am using DM355+MontaVista5.0+uboot1.2
I found I can mount the mtdblock to yaffs, and write to the filesystem.
But when I unmount and remount , the data disappear ,here are some log:
elevator: using anticipatory as default io scheduler
nand_davinci nand_davinci.0: Using 4-bit hardware ECC
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)
Creating 4 MTD partitions on "nand_davinci.0":
0x00000000-0x00160000 : "boot"
0x00160000-0x00560000 : "kernel"
0x00560000-0x04560000 : "fs1-64M"
0x04560000-0x10000000 : "fs2"
nand_davinci nand_davinci.0: hardware revision: 2.3
then I type the command:
[root@spd /root]# mount -t yaffs2 /dev/mtdblock2 /copyto
yaffs: dev is 32505858 name is "mtdblock2"
yaffs: Attempting MTD mount on 31.2, "mtdblock2"
[root@spd /root]# ls /copyto/
lost+found
[root@spd /root]# mkdir /copyto/demodir
[root@spd /root]# ls /copyto/
demodir lost+found
[root@spd /root]# umount /copyto/
remount ,and the data disappear:
[root@spd /root]# mount -t yaffs2 /dev/mtdblock2 /copyto
yaffs: dev is 32505858 name is "mtdblock2"
yaffs: Attempting MTD mount on 31.2, "mtdblock2"
[root@spd /root]# ls /copyto/
lost+found
[root@spd /root]#
can someone give me a tip?
