This seems to answered here, right?
https://esp32.com/viewtopic.php?f=2&t=4 ... edce257e0c

Hi @maierkomor, I assume your code looks similar to the FatFS example on the elm-chan.org site: FATFS *fs; DWORD fre_clust, fre_sect, tot_sect; /* Get volume information and free clusters of drive 1 */ res = f_getfree("1:", &fre_clust, &fs); if (res) die(res); /* Get total sectors and free sectors *...

Hi @thomasx, I assume you are referring to the Preferences library for Arduino (https://docs.espressif.com/projects/arduino-esp32/en/latest/tutorials/preferences.html). If so, there should be no interference between SPIFFS partitions and the Preferences, as the latter runs over the NVS (https://docs...

Hi @corso_shiba,
for pure LittleFS usage, please check https://github.com/espressif/esp-idf/tr ... e/littlefs (though I understand this is not exactly what you are looking for).
Generally, the best option for file-system choice would be probably FatFS.
Hope this helps.

Hi @johboh,
that sounds weird - accessing file-systems should be independent on specific task. Could you share your code, please? The critical parts would be sufficient, if you cannot share whole application (or if it's too big). I'll take a look asap

Thank you for the report!

Hi @ThomasESP32, IDF Virtual FileSystem (VFS) has no limit on filename length, only on the FS path prefix (the part which identifies specific file-system or device with FS-like interface, eg UART. The limit is hardcoded as 15 chars, see https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api...

Hi @nekomiya, there is no (actively used) SPI flash emulation in ESP IDF now, the only emulated component for storage needs is esp_partition (ie it compiles on Linux and emulates the SPI flash memory by mmaped file. For instance see https://github.com/espressif/esp-idf/tree/master/components/esp_par...

Hi @Piramma,
please, use FatFS for storing large files. The theoretical file size maximum would be 4GB (see http://elm-chan.org/fsw/ff/doc/appnote.html, section Limits), ie you can use whole partition space for one file.
FatFS also works over encrypted partitions

Hi @boborjan,
thank you for the report, your findings are correct. Our teams is already taking a look into it, you can watch the progress in your https://github.com/espressif/esp-idf/issues/12505 issue.

Hi @dmglogowski, NVS is designed for storing configuration values in a form of key:value pairs, and it introduces extra overhead and limitations needed for internal handling of the data. It is not suitable as a common file-system - just to confirm your findings. Details available at https://docs.esp...