I have a customer unit having UBIFS file system on it. Unit is up and running fine. The unit under goes a test of power cycling (AC mode-Battery mode- AC mode). At some point of time the unit(UBIFS file system) becomes read only.
Does the power cycling test causing this issue?
If UBIFS file system becomes 100% full, does this cause the issue?
What are the possible root causes for Read Only condition? Is this a preventive measure from kernel itself?
This issue is not seen in all units with same set of test environment. Whether the particular hardware can also cause the issue?