On Sep 22, 2010, at 7:57 AM, Sebastian Hagedorn wrote: > --On 22. September 2010 07:47:26 -0400 Jeffrey T Eaton <jeaton@xxxxxxx> wrote: > >> All of that said, I believe that, in general, you can safely upgrade BDB. >> If you have a Cyrus installation using BDB X, you can drop in a new Cyrus >> using BDB Y, as long as everything is shut down in between. You can't go >> back without effort, but upgrades should work. > > I'm pretty sure that's not true. *If* an application uses BDB's environment features (not all do!), you *cannot* simply upgrade, unless the application is programmed to perform the upgrade automatically. Otherwise you have to either use db_upgrade to convert the environment to the current version, or you use db_dump and db_load. There's a db_upgrade() call in the library that could be used, but it might not work in all cases: > > Errors > The DB->upgrade() method may fail and return one of the following non-zero errors: > > DB_OLD_VERSION - The database cannot be upgraded by this version of the Berkeley DB software. > -- > .:.Sebastian Hagedorn - RZKR-R1 (GebÃude 52), Zimmer 18.:. > .:.Regionales Rechenzentrum (RRZK).:. > .:.UniversitÃt zu KÃln / Cologne University - â +49-221-478-5587.:. Hmm. I thought that I had updated BDB in the past. I probably just nuked the databases between updates, since we only used them for transient data (tls_sessions.db, deliver.db, ptscache,db). The rest of my point stands; changing the BDB version is a problem in and of itself, not changing the Cyrus version. I know of no reason why one couldn't update a Cyrus 2.2 installation to 2.3. -jeaton ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
