Re: Incremental backup with LMDB

[Abdelkader Chelouah <a.chelouah@gmail.com>]

Thank you for your quick reply,

LMDB 1.0 will be available for the 2.4 and 2.5 branches or only for the 2.5 branch ?

On Tue, Jul 22, 2014 at 5:22 AM, Howard Chu <hyc@symas.com> wrote:

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 Âhttp://www.openldap.org/project/