How to compile ZFS only ?

[Ben RUBSON]

Hi,

I'm trying to rebuild ZFS (with some patches) without having to rebuild whole kernel.

What I then try :
# cd /usr/src/sys/modules/zfs/
# make
# cp zfs.ko /boot/kernel/ #to replace current zfs module

But then server does not reboot properly (/ is on ZFS).

If I do :
# cd /usr/src/
# make buildkernel KERNCONF=GENERIC
# cp /usr/obj/usr/src/sys/GENERIC/modules/usr/src/sys/modules/zfs/zfs.ko /boot/kernel/

Then server correctly reboot.

I clearly see that zfs.ko in method 1 is slightly smaller that in method 2.

Am I missing something ? (of course yes, but what ? :)

Many thanks !

Best regards,

Ben