Hello, about 2 weeks ago my running Virtual Machines began to malfunction so I shut them down. Upon attempting to restart them, I got an "Execution Error" which stated my filesystem was read-only. I then restarted the array and now my NVMe drive, which stores the VMs, says it is "Unmountable: Unsupported or no file system." I am on Unraid Version: 6.12.4. Diagnostics will be attached.

tower-diagnostics-20231123-1016.zip

If the log tree is the only issue this may help:

 

btrfs rescue zero-log /dev/nvme0n1p1

 

Then re-start the array.

Thank you for your reply, I ran that command and it gave me the following output: 
"Clearing log on /dev/nvme0n1p1, previous log_root 133791744, level 0
ERROR: failed to write super block for devid 1: flush error: No data available
ERROR: failed to write dev supers: No data available
WARNING: fsync on device 1 failed: No data available"

 

I have restarted the array with no change.

That suggests there's another problem, you can try again, if it still fails try the recovery options here.