reading an ex linux bcache disk

[jdd <jdd@dodin.org>]

Hello,

I have the following problem.

I used bcache on a computer with one hard drive and one small ssd.

(openSUSE 13.2)

this computer broke, it do not boot anymore. I could only recover the 
hard drive that seems perfectly working - I can read all the partitions 
but the bcache one.

is there any way to read the bcache partition content? As far as I know, 
the computer was shut down properly (it broke because somebody walked on 
it :-).

right now this is only a theoretical question (the problem is real, but 
there is nothing important on the bcache partition), but what I read on 
the net let me think this is not a trivial thing. If the disk content 
can't be recovered, I wont anymore use bcache :-(.

right now I get a "file system unknown" when I try to mount the bcache 
partition.

thanks for your help
jdd