freebsd stable - Jan 2016 - Multiple kernels installed when KERNCONF lists more than one kernel configuration file

Hi,

I'm running stable/10, amd64, r293231, and KERNCONF in /etc/src.conf 
lists three kernel configuration files, E5530, GENERIC, and ZFS, in 
that order.

The former is the preferred kernel, while the other two simply exists 
to verify GENERIC and GENERIC + ZFS.

/boot is a symlink to /bootpool/boot, and /bootpool is a 4 GiB UFS, 
yes, that's UFS, not ZFS.

This system uses EFI, and uses the EFI/UFS boot1.efi bootstrap loader 
to load the kernel and its modules from the UFS partition, while 
loader.conf redirects the rootfs to a dataset on the ZFS pool.

Consequently, I have:

/boot/kernel         <-- E5530
/boot/kernel.GENERIC <-- GENERIC
/boot/kernel.ZFS     <-- ZFS

UPDATING has nothing on the subject, but maybe I'm blind after all.

Is there a way to prevent installing the other kernels, i.e. GENERIC 
and ZFS?

Maybe it's simply a matter of overriding KERNCONF at the command line 
while running make installkernel.

-- 
+-------------------------------+------------------------------------+
| Vennlig hilsen,               | Best regards,                      |
| Trond Endrest?l,              | Trond Endrest?l,                   |
| IT-ansvarlig,                 | System administrator,              |
| Fagskolen Innlandet,          | Gj?vik Technical College, Norway,  |
| tlf. mob.   952 62 567,       | Cellular...: +47 952 62 567,       |
| sentralbord 61 14 54 00.      | Switchboard: +47 61 14 54 00.      |
+-------------------------------+------------------------------------+

On Wed, Jan 06, 2016 at 01:45:39PM +0100, Trond Endrest?l
wrote:
> Hi,
> 
> I'm running stable/10, amd64, r293231, and KERNCONF in /etc/src.conf 
> lists three kernel configuration files, E5530, GENERIC, and ZFS, in 
> that order.
> 
> The former is the preferred kernel, while the other two simply exists 
> to verify GENERIC and GENERIC + ZFS.
> 
> /boot is a symlink to /bootpool/boot, and /bootpool is a 4 GiB UFS, 
> yes, that's UFS, not ZFS.
> 
> This system uses EFI, and uses the EFI/UFS boot1.efi bootstrap loader 
> to load the kernel and its modules from the UFS partition, while 
> loader.conf redirects the rootfs to a dataset on the ZFS pool.
> 
> Consequently, I have:
> 
> /boot/kernel         <-- E5530
> /boot/kernel.GENERIC <-- GENERIC
> /boot/kernel.ZFS     <-- ZFS
> 
> UPDATING has nothing on the subject, but maybe I'm blind after all.
> 
> Is there a way to prevent installing the other kernels, i.e. GENERIC 
> and ZFS?
> 
> Maybe it's simply a matter of overriding KERNCONF at the command line 
> while running make installkernel.
> 
You should be able to set INSTALLKERNEL in make.conf, however something
appears to have been broken, since this should not be required.

Glen

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: not available
URL:
<http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20160106/0e9802ff/attachment.sig>

Trond,

On Wed, Jan 06, 2016 at 01:45:39PM +0100, Trond Endrest?l wrote:
T> I'm running stable/10, amd64, r293231, and KERNCONF in /etc/src.conf 
T> lists three kernel configuration files, E5530, GENERIC, and ZFS, in 
T> that order.
T> 
T> The former is the preferred kernel, while the other two simply exists 
T> to verify GENERIC and GENERIC + ZFS.
T> 
T> /boot is a symlink to /bootpool/boot, and /bootpool is a 4 GiB UFS, 
T> yes, that's UFS, not ZFS.
T> 
T> This system uses EFI, and uses the EFI/UFS boot1.efi bootstrap loader 
T> to load the kernel and its modules from the UFS partition, while 
T> loader.conf redirects the rootfs to a dataset on the ZFS pool.
T> 
T> Consequently, I have:
T> 
T> /boot/kernel         <-- E5530
T> /boot/kernel.GENERIC <-- GENERIC
T> /boot/kernel.ZFS     <-- ZFS
T> 
T> UPDATING has nothing on the subject, but maybe I'm blind after all.
T> 
T> Is there a way to prevent installing the other kernels, i.e. GENERIC 
T> and ZFS?
T> 
T> Maybe it's simply a matter of overriding KERNCONF at the command line 
T> while running make installkernel.

My fault. The change I did in head is that "kernels built" ==
"kernels installed".
The naming for alternative kernel directories is the same as in a release build.
And looks like everyone was happy with that in head. I assumed the scenario for
multiple kernels is possibility to quickly reboot into alternative kernel.

Now after your email and chatting with David, I see that another scenaruio
is a buildbox that builds kernels for multiple machines, and installs the
first one for itself.

What I am going to do now is to provide another knob (INSTALLKERNEL probably)
that will allow to override behaviour of "kernels built" ==
"kernels installed".
And put it in head. For stable/10 I will restore the original behaviour.

-- 
Totus tuus, Glebius.

Trond & David,

can you please test the attached patch. It is against stable/10 and
should restore original behaviour.

-- 
Totus tuus, Glebius.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Makefile.inc1.diff
Type: text/x-diff
Size: 2031 bytes
Desc: not available
URL:
<http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20160106/9f35f71c/attachment.diff>