On Friday 09 December 2005 15:28, 이태훈 wrote:
> I can't mount yaffs2ram file system on linux-2.6.12-mm2
You must be using pretty old code. yaffs2ram support got removed a few months
back.
I suggest you read
http://www.aleph1.co.uk/pipermail/yaffs/2005q3/001504.html
and see how to do this with nandsim.
>
> I make device like below.
>
> mknod /dev/mtd0 c 90 0
> mknod /dev/mtd1 c 90 2
That is not enough to make a real mtd device.
>
> but whent I try to mount a yaffs2ram file system. I get an error:
>
> [root@localhost 2.6.12]# mount -v -t yaffs2ram /dev/mtd0 /mnt/nand
> mount: /dev/mtd0 is not a block device
There are two things you are doing wrong:
1) If you use yaffs2ram or yaffsram file system then yaffs does not use a
block device. It uses its own internal RAM. You need to mount it as follows:
# mount -t yaffs2ram none /mnt/nand
2) If you want to mount yaffs with an mtd device then you must use the block
version of the mtd driver called /dev/mtdblockn and you must use the version
of the file system that supports an mtd block device (yaffs or yaffs2):
# mount -t yaffs2 /dev/mtdblock0 /mnt/nand
>
> So I make mtd0 to block device. like this:
>
> [root@localhost 2.6.12]# mknod /dev/mtd0 b 90 0
That does not change the internal stuff. mtdblock0 is rally a fake block
driver and just changing the attributes will not change the internal
associations.
-- Charles
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