Bug 11443 - msds-intid values mixed with OID based attributeID values after replication
msds-intid values mixed with OID based attributeID values after replication
Product: Samba 4.1 and newer
Classification: Unclassified
All All
: P5 major
: ---
Assigned To: Andrew Bartlett
Samba QA Contact
Depends on: 11778
Blocks: 11047 11783
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Reported: 2015-08-11 23:42 UTC by Andrew Bartlett
Modified: 2016-05-27 04:03 UTC (History)
2 users (show)

See Also:

Example of broken replPropertyMetaData (7.37 KB, text/plain)
2015-08-11 23:50 UTC, Andrew Bartlett
no flags Details

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Description Andrew Bartlett 2015-08-11 23:42:31 UTC
All Samba 4.0 versions since alpha13 will, when replicating a value to a remote client/server, replace the attributeID value from the replPropertyMetaData with the value found by looking up the attribute in the schema.

When a custom schema had been added to servers running Samba, the attributes will be allocated using msDS-IntId values in GetNCChanges, but the OID-based values will be recorded in the replPropertyMetaData when changes are made locally.

This means that when changes to a custom schema object are made on two different replicating servers, that duplicate replPropertyMetaData entries are created, one for the msDS-IntID (obtained over GetNCChanges) and one for the local attributeID value based on the prefixMap and the OID.

The repl_meta_data code needs to match the getncchanges code in the server and use msDS-IntId contistently.  Tests need to be written to confirm the exact behaviour over both LDAP and GetNCChanges. 

Use of msDS-IntID was introduced in 89899f55dc1fb137a0adfd734c87b65039f598a4 and 6a51afcfdbcbce7813fb59c0655e4178268ca70e in August 2010.
Comment 1 Andrew Bartlett 2015-08-11 23:50:01 UTC
Created attachment 11328 [details]
Example of broken replPropertyMetaData

This is source4/selftest/provisions/release-4-1-0rc3/expected-replpropertymetadata-after-dbcheck.ldif in master (soon, hopefully) or in my replmetadata-sort-minimal branch.

The 0x290001 attribute is the same as one of the 0x9D... attributes.
Comment 2 Andrew Bartlett 2016-05-27 04:03:46 UTC
Fixed for Samba 4.4