uncorrectable error :

[Arno Steffen]

While testing my OMAP board powering and unplug power it happens from
time to time that this message occur while mounting / (jffs2).
uncorrectable error :

Mostly the system continues booting, sometimes it crashes. I assume
that this depends on where this error is located.
The partition is writable but in this tests no write access will be done.

BUT: In the next power cycle the "uncorrectable error" is disappeared
- so it might not be really uncorrectable.
I am really helpless what might be the reason for this strange
behavior. As the flash content seems not to be corrupted, can this be
a read failure?
What can I do to find out what is going on here?

Below the complete message while boot..

IP-Config: Complete:
     device=eth0, addr=192.168.90.202, mask=255.255.255.0, gw=192.168.90.1,
     host=192.168.90.202, domain=, nis-domain=(none),
     bootserver=192.168.90.230, rootserver=192.168.90.230, rootpath=
uncorrectable error :
uncorrectable error :
mtd->read(0x400 bytes from 0x2a0000) returned ECC error
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0000:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0004:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0008:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a000c:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0010:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0014:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0018:
0xdf30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a001c:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0020:
0xff30 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002a0024:
0xff30 instead
Further such events for this erase block will not be printed
VFS: Mounted root (jffs2 filesystem) on device 31:6.
Freeing init memory: 128K
init started: BusyBox v1.9.1 (2008-10-17 18:22:46 IST)


I do have an OMAP board with Micron NAND (not ONENAND), kernel is 2.6.33

Regards
Arno