Upgrade from source to RC1: problems with /etc : lost users and dbus

[Garrett Cooper]

On Fri, Oct 28, 2011 at 8:09 PM, Kevin Oberman <kob6558 at gmail.com> wrote:
> On Fri, Oct 28, 2011 at 6:34 PM, Doug Barton <dougb at freebsd.org> wrote:
>> On 10/28/2011 01:43, Thomas Mueller wrote:
>>> How does one run mergemaster without running roughshod over existing configuration?
>>
>> Carefully? :)  Seriously ... always use the -P option, and/or add
>> PRESERVE_FILES in your mergemaster rc file. Watch the changes carefully.
>> If you have to, do the updates in more than one pass using the -r option
>> for subsequent runs. Do the simple ones first, then go back and do the
>> ones that you have to think harder about. I recommend against using the
>> -U option.
>>
>> It's not rocket science, it's just like any other system administration
>> task, it requires careful attention.
>
> I agree that just running mergemaster CAREFULLY does the job. The only
> time I was ever burned was when I was in a BIG hurry and ended up
> wasting a LOT of time. (I think I also learned.) Of course, I also
> remember merging /etc before we had mergemaster.
>
> I am a bit curious why you recommend against -U, though. I've been
> using it since it was added and have never had a problems. It's saved
> me quite a bit of time. Is thee a corner case that I'm missing?

    Here's a prime example (follow the white rabbit on this commit
thread): http://lists.freebsd.org/pipermail/freebsd-current/2011-August/026310.html
.
Cheers,
-Garrett