Comment # 3 on bug 1185482 from Marcos de Souza

(In reply to aaron k from comment #1)
> When I try to mount through a live iso, I get the error 'Can't read
> superblock'

By looking at the reddit image, it seems that the log replay is having
problems. Can you add the output of the device stats command:

   btrfs device stats /dev/nvme0n1p2

This should help to find if there were previous corruptions in your disk.

Also, did you try clearing the log by running:

   btrfs rescue zero-log /dev/nvme0n1p2

And then retrying to mount? it might help. Do you remember having a power
outage or something that lead to this situation?

Can you paste your kernel version?

Another thing that can help is to upload a btrfs image, so we can take a deeper
look at it:

btrfs-image -c9 -s /dev/nvme0n1p2 btrfs.image

This command will produce a btrfs-image containing only the metadata of your
disk, it will be compressed (c9) and it will 'hide' the filenames of your
system (-s).

Looking forward to your data! Thanks!