--On Thursday, November 01, 2012 12:36 PM -0400 Kyle Smith <alacer.cogitatus@gmail.com> wrote:
Ok, I have been running 2.4.32 for some time with no issues. Yesterday, 2 different servers (both part of a 4-way MMR) produced an "index add failure" and an "index delete failure". I went back over the bdb DB_CONFIG Settings (listed below) and everything looks nominal to me. Would it just make more sense to switch from bdb to mdb instead of troubleshooting these "random" errors too much? I also noticed that the number of "deadlocks" corresponds to the number of errors that were produced. Is there correlation there?
I would suggest back-mdb in OpenLDAP 2.4.33 over back-hdb, yes. It will remove these deadlock issues entirely. When you configure the back-mdb backend in cn=config, be sure to have:
olcDbEnvFlags: writemap olcDbEnvFlags: nometasyncset as well. This makes back-mdb writes significantly faster than writes to back-bdb/hdb. (Some 2x faster in my testing so far).
--Quanah -- Quanah Gibson-Mount Sr. Member of Technical Staff Zimbra, Inc A Division of VMware, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration