Hi!

The question came to my head like a truck when I was reading about FUSE. Suppose that because of a special need (say, to solve a very particular RAID problem) you have to read from many devices separate devices and make it look like a single one. Is that even possible? It sounds very much like a device driver to me, perhaps... but getting my hands dirty with kernel code sounds like a daunting task for me that I've never done it... but would like to read your feedback before I even think of throwing my first line of code.

Thanks in advance.

doing this kind of stuff inside or outside the kernel depends on many considerations like performance needed, is special hardware used etc... Another consideration is the policies / means: in an ideal world drivers only provide means for user space applications / libraries policies. My opinion for this kind of problem is to do all that can be in user space, and developing kernel space code only when necessary.

It depends on the kind of driver you want to write, but thanks to the well done kernel API, it's often not so difficult, see one of the best reference to start with there.

It's difficult to help you more without more specific details on what kind of driver you need.

I'll take a look at the material, man. Thanks.