Marc Perkel wrote:
> Thinking about going from mbox to maildir. Started with mbox way back 
> when but thinking about making the conversion. The main reason is that I 
> use rsync for backups and when these huge mailboxes are touched I have 
> to copy the whole thing. With maildir I only copy the files that change.
> 
> So - my questions is - what's the easiest way to make this happan. I 
> assume there are conversion utilities. I'm using Dovecot for IMAP.
> 

Here is a script I used to migrate my boxes from mbox to maildir:
http://batleth.sapienti-sat.org/projects/mb2md/

I also use dovecot and it has no problems to recognize the change from
mbox to maildir.

> Also - using Ext3 for the file system on a Raid 10 array. Backup server 
> will run Ext3 Raid 1. Is the number of files in one directory going to 
> be a problem?
> 

I don't know about ext3 but ufs on OpenBSD and XFS on linux 2.6 don't
have a real problem handling 20000+ files in one folder. My thought is
that reiserfs is probably a better choice for a maildir setup as it is
designed to perform well with thousands of small files.

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