bcache-tools: How and when loading kernel module bcache

[Rolf Fokkens]

Hi all,

I'm working on packaging bcache-tools, see 
https://bugzilla.redhat.com/show_bug.cgi?id=999690

I'd like some advice on "when and how to load the bcache kernel module".

The easiest way for now is to have a file 
/etc/modules-load.d/bcache.conf in the package which makes systemd load 
the module. This works when using bcache for some filesystems, but it 
will also load the bcache module when no bcache is actually used. So, is 
this the right approach?

An alternative would be to have the udev "bcache.rules" file load the 
kernel module whenever a bcache block device is spotted. Is this better?

Any feedback is is welcome,

Thanks,

Rolf