nmbclusters

Today I had to compile a new FreeBSD kernel for a fresh installed machine. I looked up my trusty (and pretty old) kernel config file, and, being a real man I am, didn't looked at any NOTES, LINT and other girly stuff, and proceeded to config. So, much to my surprise, I received an error:

unknown option NMBCLUSTERS

Fast glance into FreeBSD manual revealed, that

"kern.ipc.nmbclusters loader tunable should be used to tune this at boot time. Only older versions of FreeBSD will require you to use the NMBCLUSTERS kernel config(8) option."

Oh well. :)

http://www.freebsd.org/doc/en/books/handbook/configtuning-kernel-limits.html