Hi,
I am facing a strange behavior on OneNAND device with YAFFS2 file system.
Description as below:
Setup: Eclair release, Linux 2.6.29 from Google Repo, ARM11EJFS,
Samsung OneNAND device
1. Created a yaffs2 image of Android rootfs using mkyaffs2image tool
2. Flashed the image to a MTD partition on OneNAND device using fastboot
3. Verified the image flashed using fastboot in bootloader and also
using MTD utilities in Linux
and found to fine(Bad blocks are skipped while flashing as well as reading)
4. Mount that MTD partition and found few files corrupted.
5. When compared mounted contents with the rootfs directory flashed,
the files that are
corrupted differ exactly by 4KB. That 4KB data is all zero.
Further, I observed that 4KB data that has been zeroed falls
exactly in first two pages
of the blocks following a bad block
I am not able to understand why is this behavior seen for 4KB data
following a bad block.
Please let me know if I am not clear in explain the issue.
--
Regards,
Sudeep
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