Evidence of NAND being used as temp before uploading. It still hurts NAND endurance unless we find the temp location.

[vegedb]

Tested a 2GB file and upload through file browser.

After 5 minutes of waiting,

Info

The sequence,

1. File browser > share > upload
2. [Network activity = 0MB/s] 5 Minutes from SSD>Phone eMMC NAND temp folder
3. [Network activity = 25MB/s] After 5 minutes, upload starts. Phone eMMC NAND temp folder > Cloud

Hope you could find what's on sda or sda35 that's using as a temp folder. G
Got the time to investigate nand usage and its 100% being used as a "middleman".
I have zero knowledge on where it might be, hope you can help us hunt it down so we can mount an ssd on it.

[master-hax]

it is most likely in /data/data/com.google.android.apps.photos directory

[vegedb]

it is most likely in /data/data/com.google.android.apps.photos directory

Since I'm using 32gb pixel, it has only 20gb free space.
Uploading 20GB file fails, and it shows "could not find media" at the bottom of the screen AFTER 10 minutes of WRITES. I assume it fills up the temp folder and bust error once it reaches a limit.

For the time being 128gb pixel is the best to upload large video files. Or split the videos using https://github.com/mifi/lossless-cut

But the main problem is still there, NAND getting destroyed making the phone useless is inevitable.
Hope we have another way to upload bypassing the built in storage.