E (588) SPIFFS: mount failed, -10025

[emilekm2142]

Even the simplest

#include "Arduino.h"
#include "FS.h"
#include "SPIFFS.h"

void setup() {
  SPIFFS.begin();
}
void loop() {
 
}

crashes with an error

E (588) SPIFFS: mount failed, -10025
[E][SPIFFS.cpp:47] begin(): Mounting SPIFFS failed! Error: -1

It used to work for a while on the same board when there was only an unoffical SPIFFS available, but today even the unofficial one has crashed.
Is it a problem with the board? I have the newest version from the repository.

I have saved a few files containing a few chars earlier.

[lbernstone]

Did you do a flash erase before loading your new code? I have not really looked at it, but it seems highly likely the official library has a slightly different FS structure than the pre-release.

[emilekm2142]

I did make erase_flash on esp-idf, entire flash was erased yet still get the same error :/

[copercini]

@emilekm2142 try this tip from bbx10 of another issue:
SPIFFS.begin(true);

[emilekm2142]

it works! \o/!
For anyone having the same problem: the first argument is formatOnFail. Related issue: #411

[rel1ct]

SPIFFS.begin(true);
And what about the compatibility of the code?
May be:
bool begin(bool formatOnFail=true, const char * basePath="/spiffs", uint8_t maxOpenFiles=10);
and SPIFFS.begin();?

[me-no-dev]

@rel1ct having SPIFFS format by default is not a very good idea ;) if you by accident flash your board with wrong config, it will wipe your data that might be otherwise good ;) That is why it's false by default.

[rel1ct]

true and false in no way will it save on wrong config.
SPIFFS.begin(); --> E (588) SPIFFS: mount failed, -10025 --> www.google.com --> SPIFFS.begin(true);
How will this affect wrong config?

[me-no-dev]

currently there is only one partition scheme implemented, but in the future there will be more for the different flash sizes, so if you select by mistake a wrong flash size in the menu and flash it, it will find that your SPIFFS partition is not OK and will format otherwise good partition.

[rel1ct]

I do not see the connection size SPIFFS and launch SPIFFS.

[me-no-dev]

when you launch SPIFFS it reads the partition scheme currently loaded, get the size from there and try to mount with that size. If you flash firmware with the wrong partition scheme it will obviously try to mount with a different partition size and that will lead to error and reformat! What is so hard to understand?

[everslick]

I always hated it, that the old SPIFFS implementation silently formatted the partition. so i welcome the sane default to fail on mount.

on a different note, i realized that during format the watchdog complains that it did not got fed in time. and it would be very cool if we could give user feedback during the format via a progress callback. maybe those two things could be dealt with with just a progress callback?

[rel1ct]

Ok, there is a working firmware (SPIFFS size 1MB) SPIFFS.begin (true); with the files in the SPIFFS section.
You download the firmware with the modified size SPIFFS (for example 0.5MB) SPIFFS.begin (false);.
What happen to the files in SPIFFS section ???

[everslick]

Nothing. The mount will fail, the spiffs partition won't get touched.

…

On Sep 18, 2017 19:39, "rel1ct" ***@***.***> wrote: Ok, there is a working firmware (SPIFFS size 1MB) SPIFFS.begin (true); with the files in the SPIFFS section. You download the firmware with the modified size SPIFFS (for example 0.5MB) SPIFFS.begin (false);. What happen to the files in SPIFFS section ??? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#638 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AB0jL8QVCLGzZgEELJfWSlvutd9gliGOks5sjqrsgaJpZM4PZ6li> .