[Dovecot] Dovecot mailstorage migration uppon logging / delivery with dsync

[Wojciech Puchar]

>
> 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 ;)