Hi Ondřej
We have revivied our old ldap setup in prod and test setup debian stretch 9.13 slapd is version 2.4.44+dfsg-5+deb9u9 Same configuration
Ldapsearch is fine here, and the slapcat load to the deb9 ldap (in a test environnement) works fine (ie no duplicate extended attributes for entryDN and subschemaSubentry)
It’s using this transfer in the deb 11 setup that we discovered the issue. Also present in deb 13 and the test bed I am running.
I cannot comment for the Debian 10 version, as we migrated from Debian 9 to 11 directly.
Sebastian Perkins Senior Systems Development Engineer weareplanet.com De : Ondřej Kuzník ondra@mistotebe.net Date : mercredi, 29 avril 2026 à 17:33 À : Sebastian Perkins Sebastian.Perkins@hoistgroup.com Cc : openldap-technical@openldap.org openldap-technical@openldap.org Objet : Re: Ldapsearch : double on certain extended attributes
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On Wed, Apr 29, 2026 at 08:58:31AM +0000, Sebastian Perkins wrote:
Hi Ondřej
Sorry for weeks I meant this week…
I have set up a deb 13 test bed with openldap stripped to the bare bones.
[...] # Local Schema and objectClass definitions include /etc/ldap/schema/eurospot.schema include /etc/ldap/schema/insight.schema [...]
Please note the 2 custom objects « local schema » created by a 3rd company a long time ago.
I am running the base tree (not very compliant but fine here)
dn: o=Test-Root objectClass: insightOrganization o: o=Test-Root structuralObjectClass: insightOrganization entryUUID: 02df68be-bad7-1037-853d-6b9d76b319d1 creatorsName: cn=admin,dc=sceur,dc=ch createTimestamp: 20180313065342Z entryCSN: 20180313065342.301666Z#000000#000#000000 modifiersName: cn=admin,dc=sceur,dc=ch modifyTimestamp: 20180313065342Z hasSubordinates: TRUE entryDN: o=Test-Root subschemaSubentry: cn=Subschema
However the extended attributes provide double entries on the last 2 properties as described earlier
ldapsearch -o ldif-wrap=no -LLL -x -H ldap://localhost + dn: o=Test-Root structuralObjectClass: insightOrganization entryUUID: 02df68be-bad7-1037-853d-6b9d76b319d1 creatorsName: cn=admin,dc=sceur,dc=ch createTimestamp: 20180313065342Z entryCSN: 20180313065342.301666Z#000000#000#000000 modifiersName: cn=admin,dc=sceur,dc=ch modifyTimestamp: 20180313065342Z hasSubordinates: TRUE
entryDN: o=Test-Root subschemaSubentry: cn=Subschema entryDN: o=Test-Root subschemaSubentry: cn=Subschema
Hi Sebastian, I've just tried the same on a fresh Debian 13 (so 2.6.10+dfsg-1), swapping out the schemas to a plain `objectClass: organization`, since I have no idea what's in your schema and you didn't include it. But things work just fine:
$ ldapsearch -x -H ldapi://socket -o ldif-wrap=no -LLL + dn: o=Test-Root structuralObjectClass: organization entryUUID: 30b25038-d82b-1040-8346-d76423b101c5 creatorsName: cn=admin,dc=sceur,dc=ch createTimestamp: 20260429152359Z entryCSN: 20260429152359.666601Z#000000#000#000000 modifiersName: cn=admin,dc=sceur,dc=ch modifyTimestamp: 20260429152359Z entryDN: o=Test-Root subschemaSubentry: cn=Subschema hasSubordinates: FALSE
So again, there must be something in your setup that's not captured by the above?
Regards,
-- Ondřej Kuzník Senior Software Engineer Symas Corporation http://www.symas.com/http://www.symas.com/ Packaged, certified, and supported LDAP solutions powered by OpenLDAP
