migrating berkeley DBs (4.3 to 4.6)

[Erik Norgaard]

Wojciech Puchar wrote:
>> my data, and I would like to migrate my cyrus-imapd also to a newer version 
>> of BDB.
>>
>> Are there any tools or tricks for doing this?
> 
> possibly it's compatible but if you are not sure use db<version>_dump and 
> _load to dump and restore data.

Thanks, I've had a look at the dump and load utilities, they have no man 
page :( dump works fine, or so I assume. But load fails, it appears that 
db_load won't create a new db file if it does not exist, and creating an 
empty file with touch fails too:

alpha$ db_dump-4.3 -f cn.bdb.dump cn.bdb
alpha$ db_load-4.6 -f cn.bdb.dump cn46.bdb
db_load-4.6: Program version 4.6 doesn't match environment version 0.154
db_load-4.6: DB_ENV->open: DB_VERSION_MISMATCH: Database environment 
version mismatch

The "environment version" varies.

Any hints on how to use these utilities to migrate?

Thanks, Erik

-- 
Erik Nørgaard
Ph: +34.666334818/+34.915211157                  http://www.locolomo.org