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 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html