tldr; no BTRFS on dev, after a forced shutdown, help

[André Isidro da Silva]

I might be in some panic, I'm sorry for the info I'm not experienced 
enough to give.

I was in a live iso trying really hard to repair my root btrfs from 
which I had used all the space avaiable.. I was trying to move a /usr 
partition into the btrfs system, but I didn't check the space available 
with the tool, instead used normal tools, because I didn't understand or 
actually thought about how the subvolumes would change... sorry this 
isn't even the issue anymore; to move /usr I had a temporary /usr copy 
in another btrfs system (my /home data partition) and so mounted both 
partitions. However this was done in a linux "boot fail console" from 
which I didn't know how to proper shutdown.. so I eventually forced the 
shutdown withou umounting stuff (...), I think that forced shutdown 
might have broken the second partition that now isn't recognized with 
btrfs check or mountable. It might also have happen when using the live 
iso, but the forced shutdown seemed more likely, since I did almost no 
operations but mount/cp. This partition was my data partition, I thought 
it was safe to use for this process, since I was just copying files from 
it. I do have a backup, but it's old so I'll still lose a lot.. help.

I ended up giving up on my system partition after this happens to my 
/home, I'm reinstalling in a ext4 for the time being, so I should have a 
system running to fill in logs missing from this mail written from my 
phone haha.

Regards,

André