[yocto] General Question: Device specific value store

[Matthias Schoepfer]

Hi!

I have a general, maybe dumb question. Is there a smart, recommended way 
to deal with device specific data (i.e. serial number, credentials for 
backend access, you name it), that is specific for *one* device, and 
hence does not belong into the rootfs. I know, that there are (safe) 
hardware stores for it, but what, if your device does not have one. The 
current approach is to use an additional file system. Is there a good 
way to create huge numbers of such filesystems that just hold different 
values generated of a cvs file or such. What would be the yocto way 
without crafting scripts over scripts?!

Thanks and Regards,

    Matthias