Re: jffs2 file system on MPC8272ADS board

Hello Nethra,

On Wed, 26 Sep 2007 05:34:14 -0700 (PDT)
Nethra wrote:

Hello ,

quoted

quoted

hi everyone,

I m using custom board similar to MPC8272ADS board...

1) For the first time it boots up properly in case if we overwrite any
existing binaries using nfs mounted file system on the board, after
rebooting it displays fallowing message...

Further such events for this erase block will not be printed
Eep. Child "null" (ino #1346) of dir ino #3 doesn't exist!
Eep. Child "autocomm" (ino #463) of dir ino #461 doesn't exist!
Eep. Child "calibration" (ino #464) of dir ino #461 doesn't exist!
Eep. Child "coredsp_driver.ko" (ino #939) of dir ino #336 doesn't exist!
Inode #1307 was a directory with children - removing those too...
Inode #564 was a directory with children - removing those too...
Inode #565 was a directory with children - removing those too...
Inode #1112 was a directory with children - removing those too...
Inode #1115 was a directory with children - removing those too...
Inode #1118 was a directory with children - removing those too...
Inode #1123 was a directory with children - removing those too...

after this board boots up properly....but it not be having overwritten
files

quoted

Have you created jffs2 file system on flash prior to mounting it?

Yes I created jffs2 filesytem using mkfs.jffs2 prior to mounting and then I 
am over-writing some of the binaries.  In case of overwrites from NFS after
reboot
I see the above errors & the binaries/directories gets deleted from the
jffs2 partition.

quoted

quoted

3) when board is running properly in between it starts printing on
console
repeatedly...

quoted

Do the proper MTD partitions setup, erase the partition and create jffs2

filesystem on it.

quoted

If after all those steps you're still getting output, that is prolly flakey

flash.

quoted

quoted

Header CRC failed on REF_PRISTINE node at 0x00638a6c: Read 0xffffffff,
calculated 0x44660075
Node totlen on flash (0xffffffff) != totlen from node ref (0x00000254)
Header CRC failed on REF_PRISTINE node at 0x00638cc0: Read 0xffffffff,
calculated 0x44660075

[...]

quoted

quoted

 and 

file system is created using fallowing command..

mkfs.jffs2 -r RFS_NEW/ -e 0x20000 -o /tftpboot/jffs2_img -b

I am recalling playing with the options upper also cured the jffs2 warnings

(not as many as yours but anyway)

The other options I am wondering about,
  -c, --cleanmarker=SIZE Size of cleanmarker (default 12)
  -n, --no-cleanmarkers  Don't add a cleanmarker to every eraseblock
cleanmaker size will it help the cause?

well, try to get rid of padding first.

are you sure about -e? please try 

mkfs.jffs2 -e 128 -d ./myimage -b -o out.jffs2 instead.
-- 
Sincerely, Vitaly