How can the file system (LittleFS) be protected from concurrent accesses?

RE: How can the file system (LittleFS) be protected from concurrent accesses?

Amanda Hsieh — Thu, 31 Jul 2025 13:46:17 GMT

It's indeed not supported by v2.9.0. You can try the main version or wait for v3.1.0, which might be released at the end of next month.

RE: How can the file system (LittleFS) be protected from concurrent accesses?

Aurele — Thu, 31 Jul 2025 08:50:15 GMT

Hello

Sorry for the late reply. It does look like exactly what I was looking for. I’m able to catch MGMT_EVT_OP_FS_MGMT_FILE_ACCESS, but unfortunately, MGMT_EVT_OP_FS_MGMT_FILE_ACCESS_DONE doesn’t exist in the SDK version I’m using (v2.9.0).

Regards,

Aurélien

RE: How can the file system (LittleFS) be protected from concurrent accesses?

Amanda Hsieh — Fri, 18 Jul 2025 12:38:36 GMT

Hi,

You could enable fs grp hooks and then have a function in your application which locks a sempahore upon access and releases it upon being done (though would need to account for what happens in a disconnect because the done would not get called and you would need to handle it yourself) https://docs.zephyrproject.org/latest/doxygen/html/group__mcumgr__callback__api.html#gga324223c20cbefe3400272e2789082c79a0475953c86b97afa8e4ed30da3f736d3

Regards,
Amanda H.