--On January 2, 2013 8:18:38 PM +0100 andreas scherrer
<ascher...@gmail.com> wrote:
on 2.1.13 19:15 Paul Schmehl said the following:
--On January 2, 2013 6:45:50 PM +0100 andreas scherrer
And from experience this is what it will do: replace /boot/kernel/kernel
which is my custom kernel with a GENERIC kernel.
As it seems that freebsd-update works by comparing a hash of
/boot/kernel/kernel with the GENERIC kernel's hash I checked the md5 and
sha1 hash of /boot/kernel/kernel and /boot/GENERIC/kernel. They differ
(see [3]).
So why is freebsd-update going to overwrite my custom kernel? And how
can I prevent it from doing so?
Read man (5) freebsd-update.conf. Particularly the COMPONENTS portion
that explains how to update world without changing kernel.
Thanks for pointing this out. I might change my freebsd-update.conf to
not update the kernel. But still I believe this to be more of a kludge
than a solution: in my opinion the handbook suggests that a custom
kernel should be detected and left alone. But at the same time a GENERIC
kernel in /boot/GENERIC should be patched.
http://www.freebsd.org/doc/handbook/updating-upgrading-freebsdupdate.html
-----
That needs to be updated.
However, freebsd-update will detect and update the GENERIC kernel in
/boot/GENERIC (if it exists), even if it is not the current (running)
kernel of the system.
-----
Furthermore if I remove the kernel option from the COMPONENTS in
freebsd-update.conf I think I will not get the kernel source patches
anymore, right? Which in turn means I have to get them via some other
mechanism, no?
See UpdateIfUnmodified in the man page. You can specify a regex pattern
that prevents the kernel from being modified but still downloads the
sources.
Or you can simply pull source from svn, which I think would be my preferred
method. Once you've made the first pull, you can use svn to pull all the
kernel updates subsequent to that first pull and then buildkernel as you
normally do.
From the same link as above to the handbook:
-----
Unless the default configuration in /etc/freebsd-update.conf has been
changed, freebsd-update will install the updated kernel sources along
with the rest of the updates.
-----
I think something does not add up here but I can't get my head around it
(yet?).
The Handbook is out of date.
--
Paul Schmehl, Senior Infosec Analyst
As if it wasn't already obvious, my opinions
are my own and not those of my employer.
*******************************************
"It is as useless to argue with those who have
renounced the use of reason as to administer
medication to the dead." Thomas Jefferson
"There are some ideas so wrong that only a very
intelligent person could believe in them." George Orwell
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