Searching 30 GB mailbox

[Einar Bjarni Halldórsson]

> Adding it to mail_always_cache_fields does not miraculously make cache updated. Each mail needs to be accessed for that to happen.
> Ie. With doveadm fetch.
I couldn't figure out the doveadm fetch syntax for searching so I just 
ran the search manually twice. I assume that would update the cache?
> You can inspect the index files with doveadm dump to check what is cached. Not sure how it went with mdbox storage driver.
According to `man doveadm-dump` it just seems to dump index files. I 
tried dumping the cache file but it complains that it can't auto detect 
the file type.

.einar