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Current objectclass updates in a form of "replace" update instruction dependent on exact match of the old object class specification in the update instruction and the real value in LDAP. However, this approach is very error prone as object class definition can easily differ as for example because of unexpected X-ORIGIN value. Such objectclass update failures may lead to serious malfunctions later. When comparing the objectclasses, make sure we normalize them both before we compare them to mitigate these kinds of errors. python-ldap's objectclass model can be utilized to do the normalization part. One objectclass update instruction was changed to do a replace of an objectclass separately from add update instruction so that we really only replace what's stored in LDAP. https://fedorahosted.org/freeipa/ticket/2440
Ground rules on adding new schema Brand new schema, particularly when written specifically for IPA, should be added in share/*.ldif. Any new files need to be explicitly loaded in ipaserver/install/dsinstance.py. These simply get copied directly into the new instance schema directory. Existing schema (e.g. in an LDAP draft) may either be added as a separate ldif in share or as an update in the updates directory. The advantage of adding the schema as an update is if 389-ds ever adds the schema then the installation won't fail due to existing schema failing to load during bootstrap. If the new schema requires a new container then this should be added to install/bootstrap-template.ldif.