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bdb backend - reliable or not?
Previously I was using OpenLDAP 2.1.x and 2.2.x with ldbm backend.
I never had problems with it.
As I've read on the list that ldbm support will be dropped in the next
major version of OpenLDAP, and bdb is the recommended backend, I decided
to deploy a couple of new OpenLDAP servers with bdb backend.
Unfortunately, the choice was a disaster - a couple of tests showed that
after powering off the server, OpenLDAP is not able to start anymore -
all I see in logs is a single message (loglevel 256):
bdb_db_open: unclean shutdown detected; attempting recovery.
And that's it, it never recovers.
I'm using a pretty old OpenLDAP version, 2.3.6, so my first guess is
that the problems are because of it, and I'm on my way to upgrade.
On the other hand, I didn't have problems with ldbm on 2.3.6, or on any
older OpenLDAP version, so can one conclude that ldbm is more reliable
Will an upgrade to 2.3.24 solve my problems with bdb, or shall I revert
back to ldbm?
Performance is not an issue here, databases are relatively small.
What is important is the ability to survive unexpected system