On Mon 26 Jun 2017 at 18:27:28 +0100, Joe wrote:

> On Tue, 27 Jun 2017 03:04:30 +1000
> John Elliot V <j...@jj5.net> wrote:
> 
> > On 26/06/17 23:12, Jonathan Dowland wrote:
> > >> So, how are your experiences? Did you end in the same issues as I
> > >> ended?  
> > > 
> > > Nope, I read the release notes and simply did
> > > 
> > >     (correct sources.list)
> > >     apt-get update
> > >     apt-get upgrade
> > >     apt-get dist-upgrade
> > >     (pending reboot)  
> > 
> > Can I ask why you did the apt-get upgrade before the apt-get
> > dist-upgrade? Why not just go straight for apt-get dist-upgrade..?
> > 
> 
> As far as I remember, that's been advised, not mandatory, in all the
> upgrade sections of release notes that I have ever seen. Presumably,
> serious problems in an upgrade are potentially less difficult to
> recover from than those during a dist-upgrade, as only new software and
> version changes have been installed.

Some time round about Etch or Potato there was a problem with udev and
the two-step process was obligatory and also involved a reboot. My
recollection might be incorrect but, to some extent, the procedure has
passed into folklore.

> Package architecture changes and other alterations which only a
> dist-upgrade can achieve would seem to me to be likely to be harder to
> roll back. Of course, there's no reason why a small number of problems
> in only the dist-upgrade changes should not occur, making no
> difference to the methods.

Indeed.

> Maybe it's also for the psychological effect of dividing the task into
> two parts, with time for a break and a sigh of relief when the first
> part goes without difficulty...

I really like that as an explanation. Following the two-step procedure
does no harm; it lowers the blood pressure!

-- 
Brian.

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