dovecot - Jan 2011 - merging the best of mdbox and sdbox

Hi, 

Is there a way to use the mdbox format (i.e. several message
per files) for EACH IMAP folders (sdbox approach) ? 

Thanks 

Joan

On 6.1.2011, at 0.11, Joan Moreau wrote:
> Is there a way to use the mdbox format (i.e. several message
> per files) for EACH IMAP folders (sdbox approach) ? 
The problem with that is that when copying messages between mailboxes they would
have to be actually read and written entirely, rather than a) with sdbox it can
use a hard link() call, b) with mdbox it can update 3 indexes. Copying is a
rather common operation since clients often move messages to Trash, so the extra
writing would be a bit wasteful.

I am not sure I understand why it would be "read entirely", as it is
the same as reading a message when accessing a folder and writing a file
when a new message in arriving.... which is the very most common
activity of a mail server... so not sure about any "wasteful" I/O  

Can
we spend some more thoughts on this ? 

On Thu, 6 Jan 2011 00:17:36
+0200, Timo Sirainen wrote: 
> On 6.1.2011, at 0.11, Joan Moreau
wrote:
> 
>> Is there a way to use the mdbox format (i.e. several
message per files) for EACH IMAP folders (sdbox approach)
?
> The
problem with that is that when copying messages between mailboxes they
would have to be actually read and written entirely, rather than a) with
sdbox it can use a hard link() call, b) with mdbox it can update 3
indexes. Copying is a rather common operation since clients often move
messages to Trash, so the extra writing would be a bit wasteful.