On 29.10.2012, at 23.54, Christoph Anton Mitterer wrote:
On Mon, 2012-10-29 at 23:42 +0200, Timo Sirainen wrote:
btw: What are the actual advantages of sdbox over maildir?
- Not moving files from new/ to cur/ directory
- Not renaming files when changing message flags
- Not readdir()ing directories (although maildir_very_dirty_syncs=yes helps a lot with this)
Basically less disk I/O and making it possible to have mailboxes with a huge number of messages without everything slowing down horribly.
Oh that's quite some advantage...
And I guess the interior of the files is the same? I.e. just the plain mail without any changes or quoting?
Yes, but it's in dbox format so it contains also some extra metadata (not in the mail headers).
For sdbox, does that part with "loosing the indexes means game over" ;) , too?
You'll lost message flags then. Both sdbox and mdbox keep dovecot.index.backup files and repairing tries very hard to preserve everything from the indexes it sees, so I don't think it's a big concern as long as the system behaves properly.