Abdelkader Chelouah wrote:
Hi, Firstly, I would like to thank Howard for this great work he has done on the backend LMDB. By design, LMDB does not produce Write Ahead Log. However, WAL are the cornerstone of incremental backup and Point in time recovery. I noticed, in this paper (published in 2011, if i'm correct) http://www.openldap.org/pub/hyc/mdm-paper.pdf that incremental backup is among the future Work. What is the exact status of incremental backup with the LMDB Backend ? This feature is certainly highly expected.
An implementation has been done. Since it requires a change of the DB format, it has not yet been released. We are currently prepping 0.9.14 for a final 0.9 release, after which we will move to 1.0 and merge in this feature and other developmental features.
-- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/