This site says:You'll need make-bcache from the bcache-tools repository. Both the  cache device and backing device must be formatted before use.  make-bcache -B /dev/sdb   make-bcache -C /dev/sdcWiki and git repositories are at:   http://bcache.evilpiepirate.orghttp://evilpiepirate.org/git/linux-bcache.githttp://evilpiepirate.org/git/bcache-tools.git
How to download bcache-tools with git?
linux
Just, eg:git clone http://evilpiepirate.org/git/linux-bcache.gitThis creates and populates a directory.  There's a good introduction to using git beyond that, if you need to, here:http://git-scm.com/documentation