corrupt btrfs

[Thomas Pasch <thomas.pasch@gmx.de>]

Hello,

yes, I've got it. I know that btrfs is experimental, and I've got a
backup (well, it is a little bit older, but anyway...). I read
[https://btrfs.wiki.kernel.org/index.php/Problem_FAQ] and
[https://btrfs.wiki.kernel.org/index.php/Restore] and have done what it
is suggested there (including the problematic btrfs-zero-log !). In
addition, I run Ubuntu 13.10, that does rule me out from being a
sensible person.

Beside that, I tried btrfs-find-root. It shows something like:

Well block 144572416 seems great, but generation doesn't match,
have=250241, want=250412 level 0
Well block 252919808 seems great, but generation doesn't match,
have=250404, want=250412 level 0
Well block 282722304 seems great, but generation doesn't match,
have=250093, want=250412 level 0
Well block 291414016 seems great, but generation doesn't match,
have=250094, want=250412 level 0
Well block 302501888 seems great, but generation doesn't match,
have=250095, want=250412 level 0
Well block 310611968 seems great, but generation doesn't match,
have=249927, want=250412 level 0
Well block 319311872 seems great, but generation doesn't match,
have=250097, want=250412 level 0
[...]

What I'm missing here is some line starting with 'Generation: ...'.
Well, it is not there...

Certainly, the 'btrfs restore -t n /dev/sda7 /mnt/restore' trick does
not find anything useful.

Is there anything left I could try before giving up on this?

Kind regards,

Thomas