dovecot - Jul 2012 - Dovecot mailstorage migration uppon logging / delivery with dsync

Hi there,

I have a pretty standard setup with "simple" dovecot 2,0 configuration
(eg /var/mailboxes on NFS with old netapp) and local ldap directory and 
Maildir.

I wanted to find a good way to migrate from NFS old netapp to NFS new 
server (this one is not a netapp !).

There 3 kind way (according to my own experience)

- rsync old spool to new spool being patient stop services and then 
doing last rsync and mount /var/mailboxes mount point from old netapp to 
new nfs server).
- doing imap_login (and other stuff like this) doing an rsync per box 
AFTER doing the first rsync with all boxes...
- using dsync to fetch the maildir stuff from old server to new one, 
doing a simple flag, and doing "au fil de l'eau" migration.

The last one seems to me a good idea, but I cannot figure host to make 
this correctly.

Any hints or do someone here has already done this kind of stuff?

Kind regards,

-- 
Xavier Beaudouin

>
> I wanted to find a good way to migrate from NFS old netapp to NFS new
server
> (this one is not a netapp !).
why not just attaching disks directly? going from older nonsense to newer 
one :)
> There 3 kind way (according to my own experience)
>
> - rsync old spool to new spool being patient stop services and then doing 
> last rsync and mount /var/mailboxes mount point from old netapp to new nfs 
> server).
right.

this is the right way. last rsync should go quickly.

well... not that quickly over NFS ;)