Re: UBIFS becomes read-only when written, then fails to mount

[Tanya Brokhman <tlinder@codeaurora.org>]

On 6/18/2014 2:45 PM, Matt Hevern wrote:
> On Wed, Jun 18, 2014 at 9:14 PM, Tanya Brokhman <tlinder@codeaurora.org> wrote:
>> On 6/18/2014 2:02 PM, Matt Hevern wrote:
>>>>>
>>>>>     ubiblke: unknown partition table
>>>>> ....
>>>>
>>>>
>>>>
>>>> How did you create your ubifs and ubi images?
>>>
>>>
>>>
>>> I used the following commands:
>>>
>>> mkfs.ubifs -x "none" -m 2048 -r config -e 126976  -c 256 -o config.ubifs
>>
>>
>> try adding the "-F" flag to mkfs.ubifs. let me know if it helps
>
>
> Hi Tanya,
>
> This issue doesn't seem to be easy for me to reproduce as it's only
> happened to me once in over 12 months of use.
> I don't really have any way to verify that the  '-F' space fixup works
> or not, and i'm not sure i can use it...
>   according to the man page kernel 3.0 is required, and ii'm running 2.6.35.3.
>
> Is there something in the logs which makes you suspect that this
> problem is related to the -F 'fix up free space' mechanism ?
>
> Matt
>

yes. this part:
UBI: background thread "ubi_bgt0d" started, PID 492
   ubiblka: unknown partition table
   ubiblkb: unknown partition table
   ubiblkc: unknown partition table
   ubiblkd: unknown partition table
   ubiblke: unknown partition table
i'm working with kernel3.10 but i was having similar issues until i 
started creating the img with "-F". I don't remember the exact error i 
got but i think it was also something on mount or first write issued to 
device.

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