UBIFS Corruption

[Reginald Perrin]

>>  1. You enabled all UBIFS debugging messages which are too verbose and
>>  not needed. Do not enable them because they "push out" the 
> interesting
>>  diagnostic messages from the kernel printk ring buffer.
>> 


Artem,

I'm trying to get a good log, but seem to have issues getting the right configuration.  Currently, I have these config settings:
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MTD_UBI_BEB_RESERVE=1
CONFIG_UBIFS_FS=y
CONFIG_UBIFS_FS_XATTR=y
CONFIG_UBIFS_FS_LZO=y
CONFIG_UBIFS_FS_ZLIB=y
CONFIG_UBIFS_FS_DEBUG=y
CONFIG_UBIFS_FS_DEBUG_MSG_LVL=0



Booting shows:
[    4.860000] UBI: background thread "ubi_bgt1d" started, PID 355
UBI device number 1, total 749 LEBs (96638976 bytes, 92.2 MiB), available 0 LEBs (0 bytes), LEB size 129024 bytes (126.0 KiB)
[    5.004000] UBIFS: recovery needed
[    5.580000] UBIFS error (pid 357): ubifs_recover_leb: garbage
[    5.584000] UBIFS error (pid 357): ubifs_scanned_corruption: corruption at LEB 498:81920
[    5.588000] UBIFS error (pid 357): ubifs_scanned_corruption: first 8192 bytes from LEB 498:81920
[    5.616000] UBIFS error (pid 357): ubifs_recover_leb: LEB 498 scanning failed



When I do a dmesg, I get:
root:/> dmesg
fffffff ffffffff ffffffff ffffffff ffffffff ffffffff  ................................
[    5.608000] 00001460: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff  ................................
(snip)
[    5.616000] 00001fe0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff  ................................
[    5.616000] UBIFS error (pid 357): ubifs_recover_leb: LEB 498 scanning failed
[    5.620000] UBIFS DBG (pid 359): ubifs_bg_thread: background thread "ubifs_bgt1_0" stops



This is pretty much the start of the log:

root:/> head -n 20 /var/log/messages 
Jan  1 12:38:28 syslogd started: BusyBox v1.16.2
Jan  1 12:38:28 kernel: [    5.608000] 00001480: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff  ................................



I can actually pull the image off the flash (using JTAG), it's about 20MB.  When I've tried to mount this in the past on my PC, I get a mount error and can't get more information.  We would be willing to share (under NDA), and contract assistance, if required.  

Is this any better?