I had this problem. Took many days and lots of research, but I fixed this problem with help from some experts. I am using MyCloudEx2 Ultra with Transmission daemon 2.94 installed. I had almost 5TB of storage available, but Transmission claimed it was full. Using OS 5.
Disclaimer: Please double check your exact paths and change commands accordingly. I am not responsible for any damage to your device. When you access SSH, be careful.
Step 1: Activate SSH in the device settings and stop the Transmission program.
Step 2: Log into SSH - use the following command:
Step 3: Create a folder on your public share for the Transmission config files. I use /Transmission/config
Step 4: Transfer the Transmission config files to your public share with the following command:
mv /mnt/HD/HD_a2/Nas_Prog/Transmission/config /mnt/HD/HD_a2/Public/Transmission
Step 5: Make a soft link in the Transmission folder to the new location
ln -s /mnt/HD/HD_a2/Public/Transmission/config /mnt/HD/HD_a2/Nas_Prog/Transmission/config
you can verify that there’s a folder in the directory call config by typing ls
If you try to enter the directory, however, it will give you an error message. That’s normal.
start transmission and test.
Note: as this post is so old, I am assuming this is probably not relevant to you anymore. But I am posting the solution here anyway in the hopes that it can help someone.