samba - Jan 2013 - samba-tool dbcheck produces wrong instancetype errors

Hi All,

I have joined a samba4 instance to en existing W2k8 AD domain as an 
additional domain controller.

When I do

samba-tool dbcheck

I get (example) :

ERROR: wrong instanceType 4 on CN=INVIEW-DC2,OU=Domain 
Controllers,DC=inview,DC=local, should be 0
Not changing instanceType from 4 to 0 on CN=INVIEW-DC2,OU=Domain 
Controllers,DC=inview,DC=local


This happens for  644 out of 655 of the objects in directory. I have 
attempted to fix one or two less important objects and the error does 
not appear again.

Before I go ahead and fix them all, I want to find out whether doing 
this would have any unwanted ramifications?

Can anyone explain what causes these errors and if fixing them might 
break something?

Thanks in advance

Chris

-- 
Chris Lewis

Hello,

I have the same issue in a W2K3 and W2K8 AD domain.

Best Regards


On 01/10/2013 04:50 PM, Chris Lewis wrote:
> Hi All,
>
> I have joined a samba4 instance to en existing W2k8 AD domain as an
> additional domain controller.
>
> When I do
>
> samba-tool dbcheck
>
> I get (example) :
>
> ERROR: wrong instanceType 4 on CN=INVIEW-DC2,OU=Domain
> Controllers,DC=inview,DC=local, should be 0
> Not changing instanceType from 4 to 0 on CN=INVIEW-DC2,OU=Domain
> Controllers,DC=inview,DC=local
>
>
> This happens for  644 out of 655 of the objects in directory. I have
> attempted to fix one or two less important objects and the error does
> not appear again.
>
> Before I go ahead and fix them all, I want to find out whether doing
> this would have any unwanted ramifications?
>
> Can anyone explain what causes these errors and if fixing them might
> break something?
>
> Thanks in advance
>
> Chris
>

-- 
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On Thu, 2013-01-10 at 16:50 +0000, Chris Lewis wrote:
> Hi All,
> 
> I have joined a samba4 instance to en existing W2k8 AD domain as an 
> additional domain controller.
> 
> When I do
> 
> samba-tool dbcheck
> 
> I get (example) :
> 
> ERROR: wrong instanceType 4 on CN=INVIEW-DC2,OU=Domain 
> Controllers,DC=inview,DC=local, should be 0
> Not changing instanceType from 4 to 0 on CN=INVIEW-DC2,OU=Domain 
> Controllers,DC=inview,DC=local
> 
> 
> This happens for  644 out of 655 of the objects in directory. I have 
> attempted to fix one or two less important objects and the error does 
> not appear again.
> 
> Before I go ahead and fix them all, I want to find out whether doing 
> this would have any unwanted ramifications?
> 
> Can anyone explain what causes these errors and if fixing them might 
> break something?
That's a very interesting question.  0 seems the wrong value, if you are
a read-write DC.

I suspect we are getting the domain join stuff wrong, so we then trigger
this incorrectly in dbcheck.

Andrew Bartlett
-- 
Andrew Bartlett                                http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org