Is state_file_interval only supposed to be applied once or repeatedly ?

[douwe2]

Hi,
Is my understanding wrong that when you set state_file_interval to for example 10 seconds the state_file is updated every 10 seconds ?
On my raspberry pi (mpd version 0.22.4) it only does it once after a state change, but no ever again until the next state change.

[MaxKellermann]

It is applied repeatedly, but if nothing changes, MPD will not bother writing a new state file, because it would be the same as the previous one.

[douwe2]

thanks so much for the quick reply and the clarification. I was hoping I could set it to one second, then when the raspberry pi is turned of it can resume playing where it left off when it is turned on again. Now it pretty  much goes back to the beginning of the song (or audiobook chapter. and those a really long). I would be grateful if you could   point me in the right direction where in the code I could implement this feature ? thanks,   Ewoud

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On 07-Oct-22 7:48, Max Kellermann wrote: It is applied repeatedly, but if nothing changes, MPD will not bother writing a new state file, because it would be the same as the previous one. — Reply to this email directly, view it on GitHub <#1638 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AZJ4ZXJASBTFWYEB4ZHPNULWB62TDANCNFSM6AAAAAAQ67U4KM>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[MaxKellermann]

Progress during playback of a single song is not considered a "state change" and thus will not trigger the save.
Saving once per second will add a lot of write load to your SD card, and will wear it faster than necessary.
The code is here: https://github.com/MusicPlayerDaemon/MPD/blob/master/src/StateFile.cxx

[geneticdrift]

when the raspberry pi is off

The state file is also written when MPD exits normally.
Maybe the cause of losing the state is that the raspi is turned off instead of shutting down cleanly.