[Trisquel-users] initramfs to chroot jail

[talaransos]

I am trying to boot Trisquel into a jail with the help of unionfs-fuse. I  
have been tampering with initramfs scripts and I think it finally combine the  
two filesystems (/root and /media/tomahawk - this second is the one I mount  
RW) into /mnt but when I try to exec run-init /mnt /sbin/init ...
I get mountall: event failed. and the boot process hangs.
My script is as follow:
"this is a fragment just before the end of /usr/share/initramfs-tools/init"

http://pastebin.com/x3UiDEQD

I need your help to continue.