[Bug 536958] Re: slapd package configuration aborts with "Program version 4.7 doesn't match environment version 0.44" error during Hardy -> Lucid upgrade

[Nathan Stratton Treadway]

(As a side note, I noticed that the actual version number printed out in
the "doesn't match environment version 0.XXX" message was not consistent
-- when I did the original upgrade it was "0.44", but in my later
testing it started out at 0.143 and then kept getting larger.

It turns out that the format of the Berkeley DB "environment" file
changed between BDB 4.3 and 4.4, and in particular the location of the
bytes that encode the database version number changed.  In the the case
of lucid's OpenLDAP tools (which use DBD v4.7) looking at the
environment file left over from hardy (v4.2), the bytes that are
interpreted as the "minor" version number actually contains the "Locks
granted without waiting" count.

So, for example, if I run 
  db4.2_stat -e -N | head | grep "without waiting"
from within the BDB directory, the count shown will match the XXX printed in the "environment version 0.XXX" message from slaptest.

This means that running some other command that changes the locks-
granted count [e.g. "db4.2_stat -e" , without the "-N" ] will actually
cause the XXX number to change between different attempts to run
slaptest .

It seems like the header format of the environment file was stabilized
as of db4.4, so db4.7 tools shouldn't have the same problem with files
generated by 4.4 and later.  )

-- 
slapd package configuration aborts with "Program version 4.7 doesn't match environment version 0.44" error during Hardy -> Lucid upgrade
https://bugs.launchpad.net/bugs/536958
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