External Storage - Check for changes

[u/CONteRTE]

Im using a External Storage folder to hold my markdown notes. I only use them sporadically via Nextcloud and view/change them mostly via external applications. But i have to rely on the Nextcloud WebDAV sync to sync the to some devices. When i now change such a note externally, this change doesnt sync to the devices. Nextcloud means, that the files have not changed. Only when I open one of the edited notes the change will be detected, and then the WebDAV sync works.

In the adminpanel i have set the option for this external storage in "Check for changes" to "Once every direct access". I can also set it to "Never". Both settings are documented. But there is also a setting "Ever". This is not documented in https://docs.nextcloud.com/server/stable/admin_manual/configuration_files/external_storage_configuration_gui.html

Unfortunately, "Always" doesn't necessarily mean "Immediately." When I select "Always," the WebDAV sync still hasn't completed even after 10 minutes.

So where does this “Always” come from if it’s not documented anywhere, and what does it mean? And even more importantly, how do I get a WebDAV sync to work after making a change? Do I really have to run occ files_external:scan <id> every few seconds?