jffs2 filesystem on flash problem CRC errpr

GYF hello_gyf at yahoo.com.cn
Tue Sep 14 23:46:00 EDT 2004 

Hi, 
 
I'm new here. Here I have a problem about setting up
jffs2 file system on my flash. My target system is
uClinux(2.4.x), and the following is the flash
information:
Bank # 1: AMD 29LV160BB (16 Mbit, bottom boot sector)
  Size: 4 MB in 35 Sectors
  Sector Start Addresses:
    B0000000 (RO) B0008000 (RO)
B000C000 (RO) B0010000 (RO) B0020000 (RO)
   
B0040000     
B0060000     
B0080000     
B00A0000     
B00C0000     
   
B00E0000     
B0100000     
B0120000     
B0140000     
B0160000     
   
B0180000     
B01A0000     
B01C0000     
B01E0000     
B0200000     
   
B0220000     
B0240000     
B0260000     
B0280000     
B02A0000     
   
B02C0000     
B02E0000     
B0300000     
B0320000     
B0340000     
   
B0360000     
B0380000     
B03A0000     
B03C0000     
B03E0000     

And  the partitions:
 
Creating 4 MTD partitions on "Physically mapped
flash":
0x00000000-0x00040000 : "u-boot"
0x00040000-0x000e0000 : "kernel"
0x000e0000-0x00100000 : "config"
0x00100000-0x00400000 : "filesystem"
 
I enabled MTD and jffs2 filesystem support,
 started the target system using NFS mode (i.e.
its filesystem is on the NFS server ). 
 
then I downloaded from internet two diffrent
versions of  executable file mkfs.jffs2. and
build the jffs2 image in this way:
./mkfs.jffs2 -b -e 0x20000 -d mydir -o fs.img
According to my flash information, the erase size is
128kB(0x20000), 
mydir is the directory from which I want to build
jffs2 filesystem.
fs.img is the name of the filesystem image .

It seems that these tools work well, but they produced
different images
from same directory.
But when I tried to mount the filesystem, I got a lot
of "CRC failed" errors. see below.
------------------------------------------------------------
/usr> erase /dev/mtd3
Erase Total 1 Units
Performing Flash Erase of length 131072 at offset 0x0
done
/usr> cp jffs2.img /dev/mtd3
/usr> mount -t jffs2 /dev/mtd3 /mnt
mount: Mounting /dev/mtd3 on /mnt failed: Block device
required
pid 31: failed 256
/usr> mount -t jffs2 /dev/mtdblock3 /mnt
mount: Bad command or file name
/usr> mount -t jffs2 /dev/mtdblock3 /mnt
jffs2_scan_dirent_node(): Name CRC failed on node at
0x0000000c: Read 0x09349Name for which CRC failed is
(now) 'ARMulator-HO'?@', ino #2
jffs2_scan_dirent_node(): Name CRC failed on node at
0x000006a0: Read 0x30779Name for which CRC failed is
(now) 'ARNEWSH-5206-HOW'?', ino #3
jffs2_scan_inode_node(): Data CRC failed on node at
0x000006dc: Read 0x77a574jffs2_scan_dirent_node():
Name CRC failed on node at 0x000009d0: Read
0x817beName for which CRC failed is (now)
'ARNEWSH-5307-HOW'?', ino #4
jffs2_scan_inode_node(): Data CRC failed on node at
0x00000a0c: Read 0xd24de9jffs2_scan_dirent_node():
Name CRC failed on node at 0x00000d40: Read
0x86dbdName for which CRC failed is (now)
'Adding-Platforms-HOW$?', ino #5
jffs2_scan_inode_node(): Data CRC failed on node at
0x00000d80: Read 0xcb6b49jffs2_scan_dirent_node():
Name CRC failed on node at 0x000013d8: Read
0xc74beName for which CRC failed is (now)
'Adding-User-Apps-HOW$?', ino #6
jffs2_scan_inode_node(): Data CRC failed on node at
0x00001418: Read 0x0fb7c7jffs2_scan_dirent_node():
Name CRC failed on node at 0x00001930: Read
0x58299Name for which CRC failed is (now) 'COBRA527s',
ino #7
jffs2_scan_dirent_node(): Name CRC failed on node at
0x000019a8: Read 0xcc103Name for which CRC failed is
(now) 'ColdFire-HOWAp', ino #8
jffs2_scan_inode_node(): Data CRC failed on node at
0x000019e0: Read 0xae98acjffs2_scan_inode_node(): Data
CRC failed on node at 0x000029f8: Read
0x5594e7jffs2_scan_dirent_node(): Name CRC failed on
node at 0x00003d10: Read 0x81192Name for which CRC
failed is (now) '...', ino #9
jffs2_scan_dirent_node(): Name CRC failed on node at
0x00004098: Read 0x3d2acName for which CRC failed is
(now) 'HITACHI-BigSurIV-HOW$?', ino #10
jffs2_scan_inode_node(): Data CRC failed on node at
0x000040d8: Read 0xc99856jffs2_scan_dirent_node():
Name CRC failed on node at 0x000042d4: Read
0x32938Name for which CRC failed is (now)
'HITACHI-KeyWest-HOWT$', ino #11
jffs2_scan_inode_node(): Data CRC failed on node at
0x00004314: Read 0xde672fjffs2_scan_dirent_node():
Name CRC failed on node at 0x0000450c: Read
0x7846dName for which CRC failed is (now)
'INTEL-IXDP425-HOHOW', ino #12
jffs2_scan_inode_node(): Data CRC failed on node at
0x00004548: Read 0x8484a3jffs2_scan_dirent_node():
Name CRC failed on node at 0x00004aa0: Read
0x0e39aName for which CRC failed is (now)
'LEOX-TSIM-HO5-H', ino #13
jffs2_scan_inode_node(): Data CRC failed on node at
0x00004ad8: Read 0x5b9ea4jffs2_scan_inode_node(): Data
CRC failed on node at 0x00004cf0: Read
0x45ea1djffs2_scan_inode_node(): Data CRC failed on
node at 0x00005478: Read
0x4de56ejffs2_scan_dirent_node(): Name CRC failed on
node at 0x000059dc: Read 0x06f05Name for which CRC
failed is (now) 'MOTOROLA-M5206eC3-HOu??', ino #15
jffs2_scan_inode_node(): Data CRC failed on node at
0x00005a1c: Read 0xaf4077jffs2_scan_dirent_node():
Name CRC failed on node at 0x00005cec: Read
0xf767bName for which CRC failed is (now)
'MOTOROLA-M5206eLITE-HOWT(', ino #16
......
 
Eep. Child "LIESMICH" (ino #14) of dir ino #1 doesn't
exist!
Eep. Child "LIESMICH.txt" (ino #26) of dir ino #7
doesn't exist!
Eep. Child "COBRA5272-FAQ_de.txt" (ino #30) of dir ino
#28 doesn't exist!
Eep. Child "COBRA5272-FAQ_en.txt" (ino #32) of dir ino
#29 doesn't exist!
Eep. Child "COBRA5272-Getting-started_en.txt" (ino
#33) of dir ino #29 doesn!Inode #7 was a directory
with children - removing those too...
Cannot remove child "LIESMICH.txt", ino #26, because
it doesn't exist
Inode #28 was a directory with children - removing
those too...
Cannot remove child "COBRA5272-FAQ_de.txt", ino #30,
because it doesn't existInode #29 was a directory with
children - removing those too...
Cannot remove child "COBRA5272-FAQ_en.txt", ino #32,
because it doesn't existCannot remove child
"COBRA5272-Getting-started_en.txt", ino #33, because
it t/usr> cd /mnt
/mnt> ls
jffs2_read_inode() on nonexistent ino 14
LIESMICH: Input/output errorffs2_read_inode() on
nonexistent ino 25
SnapGear-SOHO+-HOWTO: Input/output error
/mnt> ls
LIESMICH: Input/output error
SnapGear-SOHO+-HOWTO: Input/output error
/mnt> mount
rootfs on / type rootfs (rw)
/dev/root on / type nfs
(rw,v2,rsize=4096,wsize=4096,hard,udp,nolock,addr=17)/proc
on /proc type proc (rw)
/dev/ram0 on /var type ext2 (rw)
/dev/ram1 on /etc/config type ext2 (rw)
/dev/mtdblock3 on /mnt type jffs2 (rw)
/mnt>
-------------------------------------------------------------
what's the reason? and what else should I
do?  thanks.
 



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