Syncthing Writing to Disk Preventing Spindown

Support
1

I have discovered that Syncthing writes a small amount of data to my drive pool on my TrueNAS every minute, which prevents the system spinning down the disks. If I “Stop” Syncthing in the Applications section of TrueNAS, there are none of these little writes and the disks spin down.

I have several folders syncing, most with Recycle Bin enabled. I have tried changing the re-scan of the folders and the recycle bin emptying schedule to something long (256200 seconds) and also turning off folder watching on the NAS side (I only need it on the PC side for my one-way sync). The disk activity in the Reporting section of TrueNAS still shows the disk activity every minute.

This is a shame because it is reasonable for a home user such as myself to want the hard drives to spin down after, for example, 30 minutes of inactivity to save power. I don’t really want to have to login to the TrueNAS GUI and enable the app each time I want the data to sync.

Can anyone shed any light on this? I could only find a few threads about this but nothing really helped.

Thanks.

2

Please see https://forum.syncthing.net/t/allow-disk-to-spin-down-even-if-paired-clients-are-online/19606. In sum, the only way would be to move Syncthing’s database to a different drive.

3

Thanks for that, I did not find that thread. I could put all my apps on an SSD pool (they are currently using the same pool as the synced files on spinning disks), would this help or does it only help if it is RAM based? The SSD option is doable but not really convenient for me as I would need use the nvme that is currently my cache.

I am no expert at all in this area but it seems unnecessary for Syncthing to be doing the database check every minute. It would be nice to have a setting to change this to enable better power management but maybe it isn’t possible.

4

It can be any type of storage :slightly_smiling_face:. In fact, Syncthing should also perform much better if the database is stored on an SSD.