SFTP and large files: "The plugin SFTP was unloaded by Android"

[gargamon]

I use an android tablet and connect to a NAS via the SFTP plugin(SAMBA) . Everything is fine when I transfer large files from the tablet to the server, but if I try copying the other way I get an error "The plugin SFTP was unloaded by Android. Try closing other apps ... check the power saving functions of your device"
I have turned off the power saving function with no change. I also closed all apps except for TC and tried the copy. It failed, but it did get more copied before crapping out.
Any additional info I can provide or is this something we need to live with?
Thanks.

[ghisler(Author)]

There are phones with draconian power saving functions (mostly from Chinese vendors) which kill every app which is no longer in the foreground after a short while. However, this usually affects both uploads and downloads. Do you get this in the middle of a large transfer, or also when trying small files?

[gargamon]

The failure occurs only when transfering large files.

The device having the problems is a Samsung A7-lite tablet. I have not been able to reproduce it on my Samsung phone. An additional message I received during these tests indicated that the plugin was repeatedly stopping.

Is there a debug mode that the plugin can be run in that will show more info? If so, how do I activate it?

[ghisler(Author)]

An additional message I received during these tests indicated that the plugin was repeatedly stopping.

That sounds more like there is a crash in the plugin than the plugin being unloaded.
Do you get this only for files larger than 2 GB or 4 GB? They are two limits some servers may not be able to handle.

[gargamon]

Files are typically less than 1 GB. It usually craps out aroung 200 MB. If all other apps are closed it appears to get more copied before it fails. I'll run some more tests to verify.

[ghisler(Author)]

Google Play Store reports one "out of memory" error on a Samsung Galaxy Tab A (2016) in the SFTP plugin, could this be your device?

[gargamon]

No. Its a Samsung A7-Lite. 3GB RAM, 32GB ROM, about double the Tab A specs.

[ghisler(Author)]

Strange, there is no crash report for this device in the Play Store.

To send me crash data, you can do the following:
1. Enable development mode on the tablet by going to Android settings - About device, and then tap 7 times on "Build number".
2. Important: Restart your device to clear the debug log (it's a ring buffer in RAM, so the SFTP crash is probably long gone from the log)
3. Recreate the error
4. Go to Android settings - "System" - "Developer Options".
5. Click on "Debug report". It will collect crash data in a notification.
6. Once it's done, click on the notification and choose "Total Commander" as the target. It saves a ZIP file with debug info
7. Send me this zip file to cghisler at gmail dot com.