Re: Upgrade Ubuntu server will purge OpenLDAP data

* Michael Ströder:

Florian Weimer wrote:

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• Onno van der Straaten:

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Ubuntu server upgrade from 12.04 to 14.04 LTS will purge the OpenLDAP directory data.

Is there an Ubuntu bug for this behavior? It's a bit odd.

One should generally be careful with system upgrades.

AFAIK on-disk-format might change because of Berkeley-DB version upgrade.

Unless OpenLDAP uses the HASH database type, it's sufficient to checkpoint the Berkeley DB environment (and perhaps some other undocumented magic) *before* updating OpenLDAP. The on-disk format of B-Tree-type databases is quite stable.

(Automated dump and reload might not work for large databases during automated package upgrades because of the time and disk space overhead.)