[Pkg-virtualbox-devel] Bug#878074: Update virtualbox-guest-* will remove a well running ntp

[Jörg Frings-Fürst]

reopen 878074 
thanks

Hello,

Am Montag, den 09.10.2017, 16:56 +0200 schrieb Gianfranco Costamagna:
> On Mon, 09 Oct 2017 16:48:00 +0200 =?utf-8?q?J=C3=B6rg_Frings-F=C3=BCrst?= <debian at jff-webhosting.net> wrote:
> > Package: virtualbox-guest-utils
> > Version: 5.1.28-dfsg-1
> > Severity: serious
> > 
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA512
> > 
> > Hello,
> > 
> > on update I get :
> > 
> > [quote]
> > $ sudo apt-get install virtualbox-guest-dkms
> > Paketlisten werden gelesen... Fertig
> > Abhängigkeitsbaum wird aufgebaut.
> > Statusinformationen werden eingelesen.... Fertig
> > Die folgenden Pakete wurden automatisch installiert und werden nicht mehr
> > benötigt:
> >   gir1.2-nm-1.0 sntp
> > Verwenden Sie »sudo apt autoremove«, um sie zu entfernen.
> > The following additional packages will be installed:
> >   virtualbox-guest-utils virtualbox-guest-x11
> > Die folgenden Pakete werden ENTFERNT:
> >   ntp
> > Die folgenden Pakete werden aktualisiert (Upgrade):
> >   virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11
> > 3 aktualisiert, 0 neu installiert, 1 zu entfernen und 193 nicht aktualisiert.
> > Es müssen noch 0 B von 2.082 kB an Archiven heruntergeladen werden.
> > Nach dieser Operation werden 1.980 kB Plattenplatz freigegeben.
> > Möchten Sie fortfahren? [J/n] n
> > Abbruch.
> > [/quote]
> > 
> > The same with virtualbox-guest-x11 and virtualbox-guest-utils.
> > 
> > I have set the severity to serious, because with the deletion of an important
> > system tool the stability is significantly disturbed.
> > 
> 
> This is not a bug, but a design thing.
> NTP can't work with virtualbox, because virtualbox is in charge of keeping the time up-to-date, with the guest-utils tools
> e.g. with VBoxService.
> 
> Having two different timeservers will make things behave badly, and the upstream documentation forbids this.
> 

I think if virtualbox-guest-utils has problems with ntp, virtualbox-
guest-utils should fix this problem instead of uninstalling a standard
program used for years.

On the other hand I find it impossible that neither a reference to the
deletion of ntp in the changelog is present nor in the NEWS.

I have absolutely nothing against that virtualbox-guest-utils use its
own time synchronization, but system-wide only if no other time server
runs.

It is also incomprehensible for users to install virtualbox-guest-utils 
as a time server.

Therefore, I reopen the bug again.

> 
> see #873263 if you want more background on the issue
> 
> I think I won't remove that conflict for now, unless you have some good explanation for me :)
> 
> G.
> 

CU
Jörg


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