On Sep 16, 2014, at 9:54 AM, Tovo Rabemanantsoa 
<tovo.rabemanant...@bordeaux.inra.fr> wrote:

> Hi all,
> I have a server running debian 7.5 and meet issues for mounting a btrfs
> filesystem. This fs had worked for almost one year now but crashed last
> sunday. I'm unable to mount the fs and each btrfs-* commands ends with
> something like :
> Ignoring transid failure
> btrfsck: ctree.c:1550: leaf_space_used: Assertion `!(data_len < 0)' failed.
> Aborted
> 
> Ignoring transid failure
> btrfs-zero-log: ctree.c:1550: leaf_space_used: Assertion `!(data_len <
> 0)' failed.
> Aborted
> 
> 
> Ignoring transid failure
> btrfs: ctree.c:1550: leaf_space_used: Assertion `!(data_len < 0)' failed.
> Aborted
> 
> So, I can't fsck, restore, repair ou erase logs on it.
> I have followed what is told here [1] or there [2] but now, I'm out of
> ideas.

Debian 7.5 is based on kernel 3.2 which is very old in Btrfs terms. What kernel 
version are you using, and version of btrfs-progs?

Chris Murphy--
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