(ITS#9022) Force slapadd to rewrite all entryCSN values

[quanah@openldap.org]

Full_Name: Quanah Gibson-Mount
Version: OpenLDAP 2.4
OS: 2.4.47
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (47.208.128.44)


Per the slapadd man page:

       -S SID Server ID to use in generated entryCSN.  Also used for contextCSN
              if -w is set as well.  Defaults to 0.


However, if this is run against an export that already has entryCSN values in
the entries, those values are not updated.  This is problematic when wanting to
update a database from single provider (SID0) to MMR (SID1+).

I generally think that if the -S option is provided, and is non-zero, that all
entryCSN values that currently have a "0" serverID in the entryCSN field should
be updated to the specified -S value.

In the above case, it would be critical to additionally flag -w on the end user
part.

This helps to clean up data when doing migrations.