how to init and mount jffs2?

[??]

 dear david,
 thanks for your help,

now i try to:

eraseall /dev/mtd1
cp test.img /dev/mtdblock1
mount -t jffs2 /dev/mtdblock1 /mnt

then it report many "magic bitmask not found"
 do i missing something?
 
 thanks in advanced!:)
 
 best regards,
 kevin
 
 ----following message
> log------------------------------------------------------
> jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00298014:
> 0xa3dc in
> stead
> jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00298018:
> 0xccfe in
> stead
> jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0029801c:
> 0xd1b5 in
> stead
> jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00298020:
> 0xf8fd in
> stead
> jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00298024:
> 0xb452 in
> stead
> Further such events for this erase block will not be printed
> nand_read_ecc: Failed ECC read, page 0x00007fc0
> nand_read_ecc: Failed ECC read, page 0x00007fc0
> nand_read_ecc: Failed ECC read, page 0x00007fc1
> nand_read_ecc: Failed ECC read, page 0x00007fc1
> nand_read_ecc: Failed ECC read, page 0x00007fc2
> nand_read_ecc: Failed ECC read, page 0x00007fc2
> nand_read_ecc: Failed ECC read, page 0x00007fc3
> nand_read_ecc: Failed ECC read, page 0x00007fc3
> jffs2_scan_empty(): Read 0x1000 bytes at 0x00df8000 returned -5
> mount: wrong fs type, bad option, bad superblock on /dev/mtdblock1,
>        or too many mounted file systems
> 
> 
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