We are testing 10 machines with armStoneA9r2 hardware and NAND memory. Of those 10 machines, 70% of them crash after a week, the X server stops working or there are kernel panics, .....
Further investigation shows that some units are corrupting blocks according to the FASTBOOT. See photo:
On other drives according to FASTBOOT there are no bad blocks but when booting buildroot it reports severe failures in the UBIFS file system.
Have you heard of other users experiencing this problem?
Could it be that our '/' partition is mounted in read-write and when writing over time we end up corrupting the NAND memory?
Should we test with the '/' partition mounted in read-only?