On Wednesday 16 December 2009 04:42:59 dongle wrote:
> Hi, all. I am a newbie of YAFFS2, and of Linux file systems. I followed the
> steps on
> http://www.yaffs.net/lurker/message/20091011.221340.05de674a.da.html
> but something wrong happened at the last step.
> When I try to run "mount -t yaffs2 /dev/mtdblock0 xxx", the error appears;
> it says,
> "mount: wrong fs type, bad option, bad superblock on /dev/mtdblock0,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
> "
>
> It seems yaffs2 is not the right fs type. But "cat /proc/filesystems" shows
> that yaffs and yaffs2 exist.
>
> I have tried under Ubuntu 9.04 and Ubuntu 8.04, and this error always
> appear. Can you give me some suggestion? Your replies are greatly
> appreciated.
>
> Thank you so much!

What does dmesg say? If the mount fails there might be some messages.

Also cat /proc/modules | grep mtd you should see mtd, mtdblock


Works fine for me on various Ubuntus from 8.04 to 9.10

I do the following from withing yaffs2 directory:

Build yaffs2 module.
$ make

$ sudo -s
...password..
#  now have a root shell
#linux-tests/initnandsim 
# insmod yaffs2.ko
# mkdir /mnt/y
# mount -t yaffs2 /dev/mtdblock0 /mnt/y


The initnandsim script has
modprobe mtd
modprobe mtdblock
modprobe nandsim first_id_byte=0x20 second_id_byte=0xa2 third_id_byte=00\ 
fourth_id_byte=0x15
cat /proc/mtd

-- Charles