Comment 17 for bug 748340

@John Lewis
I think compression cannot be an exclusive cause of the issue, seeing how me and whakim have not touched compression and are seing this.
What does the btrfsck tool from debian unstable report in your case with you compression setup, I would assume this might be different?
It could be that there are several issues all reporting the same nondescript error.

Compression would be a very logical explanation though, if the userspace fsck is simply outdated compared to the kernel btrfs code.

I still maintain that enabling btrfsck at all was a big mistake... I was never meant to be used like this.

...I wonder if it wold be possible to reproduce this error using only snapshots and balancing, since that would explain the non-compression cases...