Date: Tue, 11 Sep 2018 10:30:36 -0400 From: Anton Yuzhaninov <citrin+bsd@citrin.ru> To: freebsd-questions@freebsd.org Subject: Re: sysctls for kernel modules loaded via kld_list in rc.conf Message-ID: <32c02de1-140e-1b75-b0ed-7e50f73b58fb@citrin.ru> In-Reply-To: <1536309562.3194443.1499937040.1614FFAA@webmail.messagingengine.com> References: <1536309562.3194443.1499937040.1614FFAA@webmail.messagingengine.com>
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On 9/7/18 4:39 AM, Dave Cottlehuber wrote:
> It seems that if a module (e.g. carp) is not started via /boot/loader.conf but in rc.conf via `kld_list="${kld_list} carp"`, then the /etc/sysctl.conf settings are not applied.
>
> It's obvious (in hindsight) why this is - sysctl is started before kld is run:
>
> $ rcorder /etc/rc.d/* /usr/local/etc/rc.d/* |egrep 'carp|kld|sysctl'
> ...
> /etc/rc.d/sysctl
> /etc/rc.d/kldxref
> /etc/rc.d/kld
>
> But it has caused some unexpected behaviour after rebooting, when preemption didn't work as planned.
>
> Is this an ordering bug, or something I could improve docs for e.g. in rc.conf(5)?
I think it is an ordering bug and very old one:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=173471
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