[Ovmsdev] Config store mount failure / reformatting

[Michael Balzer]

I just wanted to report the same, except on my unit it hasn't happened during flashing but on (I assume) a reboot after a crash somewhere
yesterday evening.

I'll do the rollback on our esp-idf repository this evening.


Am 22.08.2018 um 05:06 schrieb Mark Webb-Johnson:
> I just updated my test box, and the same thing happened. It had been rock-solid for months.
>
>     I (562) ovms_main: Mounting CONFIG...
>     Initialising OVMS CONFIG within STORE
>     E (822) config: Error: Cannot open config store directory
>
>
> Downgraded to 3.1.009, but still can’t mount store.
>
> I’m pretty sure there is something in the new IDF that is corrupting FAT filesystems on flash.
>
> We need to roll-back. I’ve disabled nightly builds until we can resolve this.
>
>> I wonder if there could be a better strategy than immediately formatting the config filesystem on a mount error. Is there any chance the
>> mount fails due to some race condition, i.e. would it make sense to first retry mounting after a short delay?
>
> I’m not seeing a reformat of the flash, just a failure to mount. The reformat option is part of the fat mount option. We can certainly turn it
> off, or delay/retry it, but it is required for initial boot of a new device.

> Regards, Mark.
>
>> On 19 Aug 2018, at 7:23 PM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>
>> I've pulled the latest esp-idf updates, merges, builds and runs without issues. Btw, the idf now includes a CAN driver, may be worth a look.
>>
>> On the second app-flashing, this happened:
>>
>>     …
>>     Wrote 2399584 bytes (1382879 compressed) at 0x00010000 in 26.1 seconds (effective 736.0 kbit/s)...
>>     Hash of data verified.
>>
>>     Leaving...
>>     Hard resetting via RTS pin...
>>     …
>>     I (452) ovms_main: Mounting CONFIG...
>>     W (722) vfs_fat_spiflash: f_mount failed (13)
>>     I (722) vfs_fat_spiflash: Formatting FATFS partition, allocation unit size=4096
>>     I (1152) vfs_fat_spiflash: Mounting again
>>     Initialising OVMS CONFIG within STORE
>>
>> :-(
>>
>> The first flash was perfectly OK and I haven't been able to reproduce this afterwards.
>>
>> I don't think this is related to idf changes, as we had some reports on lost configs before. Issue #145 also seems to be solved by the new
>> idf, I had no more crashes during reboots.
>>
>> I wonder if there could be a better strategy than immediately formatting the config filesystem on a mount error. Is there any chance the
>> mount fails due to some race condition, i.e. would it make sense to first retry mounting after a short delay?
>>
>> Regards,
>> Michael
>>
>> -- 
>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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>
>
>
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-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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