Regarding UBI/UBIFS corruptions during random power-cuts.

[Ritesh Harjani]

On 7/27/2017 1:35 AM, Richard Weinberger wrote:
> Ritesh,
> 
> Am 25.07.2017 um 13:16 schrieb Ritesh Harjani:
>> Hi Richard,
>>
>> Recently we also encountered a similar problem which is discussed in this thread. This was encountered on board with kernel 3.18.
>> This is happening with external power supply power cut testing.
>>
>> https://patchwork.ozlabs.org/patch/719544/
>>
>> Can you kindly help with what happened on this issue?
>> Were we able to identify any bug in kernel for this? Since I don't have any later conversations, it will be good to know if this problem is fixed in the latest kernel or not.
> 
> Bhuvan and I are still looking into this.

Thanks for the updating us.

> 
>> If yes, then could you please point me to the patches/discussion on this, if any.
>>
>>
>> Issue logs :-
>> https://pastebin.com/TL2b0ZbH
> 
> Do you see this in the same hardware?
No, the HW is different. It is some MSM Hardware.

> The error you're facing is rather generic.
> In our case we can reproduce the issue very reliable when we enable the UBIFS /sys/kernel/debug/ubifs/chk_fs debugfs knob.
> Can you please also try? Please note that chk_fs will make mounting UBIFS very slow.
> 
> I'm very interested in your results, maybe it helps tracking down the root cause.
Sure, I will give this a shot and let you know the outcome.


Thanks
Ritesh

> 
> Thanks,
> //richard
> 
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