Process hierarchy on a DC?

[vl at samba.org]

On Thu, Apr 27, 2017 at 10:15:43PM +1200, Andrew Bartlett via samba-technical wrote:
> On Thu, 2017-04-27 at 12:04 +0200, vl--- via samba-technical wrote:
> > 24963 ?        Ss     0:00 bin/samba
> > 24964 ?        S      0:00  \_ bin/samba
> > 24969 ?        S      0:00 bin/samba
> > 24971 ?        Ss     0:00  \_ /root/samba/bin/smbd -D --
> > option=server role check:inhibit=yes --foreground
> > 24991 ?        S      0:00      \_ /root/samba/bin/smbd -D --
> > option=server role check:inhibit=yes --foreground
> > 24979 ?        S      0:00 bin/samba
> > 24981 ?        Ss     0:00  \_ /root/samba/bin/winbindd -D --
> > option=server role check:inhibit=yes --foreground
> > 24990 ?        S      0:00      \_ /root/samba/bin/winbindd -D --
> > option=server role check:inhibit=yes --foreground
> > 
> > I think I remember that in the past this was all located under one
> > "samba" process, now the winbind and smbd parents are themselves
> > children of init. I could stop the DC with a single kill, now it's
> > three.
> 
> I would hope the pipes connecting them would help ensure it remains a
> single kill, but I agree, that does not seem right. 

When killing (in the above case) process 24963, the others crash.

> > Just curious: Why was this changed?
> 
> More to the point, when did it change?  Perhaps bisect it?

Apologies for asking without having done a deep and thorough analysis
first. Sorry for the noise, next time I will come up with a commit
hash that changed this behaviour.

Volker