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Date:      Thu, 22 Sep 2016 12:49:15 +0100
From:      Steve O'Hara-Smith <steve@sohara.org>
To:        Ian Jefferson <ijeff@sandbox.ca>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: freebsd-update not updating kernel?
Message-ID:  <20160922124915.a0867f6b437f9dc778020d1a@sohara.org>
In-Reply-To: <E13BA61B-1299-4C3D-BC48-826A835B9A2C@sandbox.ca>
References:  <CAAiTEH-DC8riFyroP-kMuptXut5-CJLk9M52vd9kH9FJ_y=8GQ@mail.gmail.com> <0B507E9E-77ED-4CD9-A51D-EF1B35DA45CD@sandbox.ca> <20160922120159.362abd1963b2baee4b148ebd@sohara.org> <E13BA61B-1299-4C3D-BC48-826A835B9A2C@sandbox.ca>

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On Thu, 22 Sep 2016 07:27:40 -0400
Ian Jefferson <ijeff@sandbox.ca> wrote:

> It doesn’t seem like freebsd-version is backported to 9.3 but I’m not
> sure that would fix the freebsd-update problem nor the lsof issue either.

	It was part of a fix for that problem - in 9.3 the kernel version
is all there is later a userspace version was added along with
freebsd-version.

> I also found this:
> 
> "The updates distributed by freebsd-update do not always involve the
> kernel. It is not necessary to rebuild a custom kernel if the kernel
> sources have not been modified by freebsd-update install. However,
> freebsd-update will always update/usr/src/sys/conf/newvers.sh. The
> current patch level, as indicated by the -p number reported by uname -r,
> is obtained from this file. Rebuilding a custom kernel, even if nothing
> else changed, allows uname to accurately report the current patch level
> of the system. This is particularly helpful when maintaining multiple
> systems, as it allows for a quick assessment of the updates installed in
> each one. “

	Yep that's the full version.

> Indeed it looks to me like /usr/src/sys/conf/newvers.sh on my system
> “knows” that I am at patch level 45 but freebsd-update doesn’t nor does
> uname. 

	Right - so if you do a kernel build and install then the whole
system will know about it otherwise it's just tucked away in an unused
source file.

> I think you are saying that uname get’s its information from the
> kernel but that is contradicted by the handbook points above so I’m
> unclear and regardless freebsd-update seems broken in this patch.

	Yep uname gets the version data from the kernel, which gets it from
newvers.sh when the kernel is built - which is what that handbook section
is telling you in a roundabout and not entirely clear way.

> I suppose the ultimate answer is we need to move off 9.3 since it is just
> about EOL anyway but I wonder… if freebsd-update is confused will it
> perform the upgrade correctly?

	Yes it will.

-- 
Steve O'Hara-Smith <steve@sohara.org>



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