I thought I'd give mdb a try to see if it will solve a performance problem I'm approaching with my current ldap servers. But, I have obviously missed some key step.

I have been running 2.4.28 on RHEL5 64-bit, using an hdb database.

The steps I followed were:

- slapcat the existing database - stop slapd - build 2.4.30 and install it - update my slapd.conf to use mdb, remove the cachesize, cachefree, and idlcachesize options (which are not valid with mdb), and add the maxsize option set to 100GB (107374182400).

Then, I ran slapadd with -q and it blew up on me:

slapadd -q -b dc=uvm,dc=edu -l ../cheese.ldif 4f68cc21 => mdb_idl_insert_keys: c_get failed: Invalid argument (22) 4f68cc21 => mdb_tool_entry_put: index_entry_add failed: err=80 4f68cc21 => mdb_tool_entry_put: txn_aborted! Internal error (80) slapadd: could not add entry dn="cn=XXobfuscatedXX,ou=People,dc=uvm,dc=edu" (line=771): txn_aborted! Internal error (80) _ 0.01% eta 02m06s elapsed none spd 3.4 M/s Closing DB...

Now, just to convince myself that I wasn't bonkers, I updated the slapd.conf file to go back to hdb and the slapadd command runs just fine.

I've read the slapd-mdb man page, scoured the openldap-technical mailing list, even the faq-o-matic and the admin guide. I'm not finding any clues to what is causing slapadd to fail here.