[Bug 202130] Sysctl kern.racct.enable=1 in /boot/loader.conf has no affect on 10.2

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202130

            Bug ID: 202130
           Summary: Sysctl kern.racct.enable=1 in /boot/loader.conf has no
                    affect on 10.2
           Product: Base System
           Version: 10.2-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: dominik.zajac at baycix.de

If you set the kern.racct.enable=1 variable in 10.2 it has no affect. This
leads to a not working rctl.

We tested with RC1 on physical server and RC2 as virtual machine both with
amd64 images. On both systems the rctl reports that kern.racct.enable=1 is not
set correctly. With 11-Current as a virutal machine this bug does not appear,
there it works as expected.

We followed the steps mentioned in
https://www.freebsd.org/releases/10.2R/relnotes.html section 5.3

Workaround is to rebuild the kernel:
Remove the "options         RACCT_DEFAULT_TO_DISABLED" from the config got it
working with 10.2 RC2. But this sysctl is designed that you are not forced to
rebuild the kernel. 

I am happy to help reproducing or testing this.

Regards,

Dominik

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