[Samba] samba_dlz shutting down on named reload

Kristján Valur Jónsson kristjan at rvx.is
Wed Jan 17 14:00:41 UTC 2018

Well, I had a cursory glance dlz_bind9.c and also the bind9 source code I
could find (
and didn´t see any provision for 'reload' in there.
bind is clearly calling the dlz_destroy() function and not dlz_create(), as
one would expect, for a reload.
So yes, it appears to be a shortcoming of bind.
1) I suggest that the wiki for AD DC be updated to point out this fact.
logrotate scripts may use 'reload' which may be broken.  a 'restart' is
better in that case.
2) I'll report this defect to the ISC.

On 17 January 2018 at 13:30, Kristján Valur Jónsson <kristjan at rvx.is> wrote:

> To a user, samba_dlz just doesn't work correctly with bind.  There are two
> obvious options
> a) bind is broken somehow and unloads all modules when reloading
> b) samba_dlz is somehow broken in the way that it interfaces with bind,
> perhaps it misinterprets the signal to 'reload' when it receives it from
> bind.
> As a user, i have no way of knowing which is it is, all that I know is
> that sabma_dlz does not work correctly in a specific setting.  Hence, the
> samba bug tracker is the right place to report that.
> I would expect the samba developers, who know how to build a bind plugin,
> to be able to verify if they are implementing the bind API protocol
> correctly, and if so, take it upon themselves, having intimate knowledge of
> its implementation, get in touch with the authors of bind, to see why their
> software doesn't work as advertised.
> At any rate, I would expect a comment on the defect to happen during
> defect triage.  There is a triage process, right?
> On 17 January 2018 at 10:11, Rowland Penny via samba <
> samba at lists.samba.org> wrote:
>> On Wed, 17 Jan 2018 09:52:56 +0000
>> Kristján Valur Jónsson via samba <samba at lists.samba.org> wrote:
>> > Well, I created a bug report for this issue.
>> > Seems that none of the developers has picked up on it.
>> > https://bugzilla.samba.org/show_bug.cgi?id=13214
>> >
>> >
>> Probably because you have reported it in the wrong place, this
>> is undoubtedly a Bind bug.
>> Rowland
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> Kv,
> Kristján Valur Jónsson, RVX

Kristján Valur Jónsson, RVX

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