How to compile ZFS only ?

[krad]

It wont help this time but you could try enabling meta mode on you builds,
this will make things generally much quicker, and there is no messing
around in the tree, just do a buildkernel

# cat /etc/src-env.conf
WITH_META_MODE=yes

also try these in your src.conf

WITH_FAST_DEPEND=yes
WITH_CCACHE_BUILD=yes
WITH_SYSTEM_COMPILER=yes



On 22 March 2017 at 23:51, Steven Hartland <killing at multiplay.co.uk> wrote:

> In addition to the main zfs module there are also dependency modules which
> are required.
>
> If you're able to test loading the module on a non-zfs root machine by
> manually loading it, it should detail any issues in /var/log/messages.
>
> That said the method listed by Xin is the quickest and easiest solution.
>
> On Wed, 22 Mar 2017 at 22:43, Xin LI <delphij at gmail.com> wrote:
>
> > Why not just -DNO_CLEAN= with 'make buildkernel'?
> >
> > But to answer your question, 'make buildkernel' will take e.g.
> > 'KERNCONF' aka kernel build configuration into account, while if you
> > do make directly, it's not (and sometimes build options in the kernel
> > build configuration, like WITNESS, etc., have material impact to data
> > structure layouts).
> >
> > On Wed, Mar 22, 2017 at 2:47 PM, Ben RUBSON <ben.rubson at gmail.com>
> wrote:
> > > Thank you for your answer Steven.
> > > Unfortunately it did not help, same behaviour :
> > > Module with you method has the same smaller size, 2323000 bytes vs
> > 2500544.
> > > (I then did not try to boot with it)
> > >
> > > Ben
> > >
> > >> On 22 Mar 2017, at 22:09, Steven Hartland <killing at multiplay.co.uk>
> > wrote:
> > >>
> > >> cd /usr/src
> > >> make buildenv
> > >> cd sys/modules/zfs/
> > >> make
> > >> make install
> > >>
> > >> On 22/03/2017 20:57, Ben RUBSON wrote:
> > >>> 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
> > >>>
> > >>> _______________________________________________
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> "
> > >>
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