in a recent post, sven made a clear/cogent arg for sdbox vs maildir
> While Maildir seems to be an obvious choice, it has some hidden
> performance impacts, namely it relies heavily on information encoded in
> the filename, which results in a big overhead in meta-operations,
> because Dovecot needs to stat() every file in a directory to gather
> those information.
i've initially avoided sdbox, assuming the index-file dependency to be an
additional failure pt,
but that^^ is somewhat compelling.
i'd like to migrate maildir -> sdbox.
the given migration example
$ doveadm -D -v -o backup -u sven sdbox:~/sdbox
examples in the docs generally demonstrate a single user migration, from a
consolidated ~/Maildir tree, and use the 'dsync ...' command (full alias?)
atm, my 'mail_location' is set with split CONTROL & INDEX locations, in
fs-layout, as
mail_location =
maildir:/data/vmail/%d/%n/Maildir:CONTROL=/data/vmail/%d/%n/_control:INDEX=/var/vmail-index/%d/%n:LAYOUT=fs:UTF-8
and I've a significant number of domains & users.
I'd like to migrate the ENTIRE server -- all domain/user accounts.
For the moment, I'd like to ensure that I do not change/destroy the current
Maildir stores/indexes, and end up with a parallel store in
mail_location =
sdbox:/data/vmail/%d/%n/Sdbox:CONTROL=/data/vmail/sdbox/%d/%n/_control:INDEX=/var/sdbox/vmail-index/%d/%n:LAYOUT=fs:UTF-8
which I can then double-check, and eventually switch to.
What's the correct procedure/syntax for an all-accounts, in-place
migration command from maildir->sdbox?
