[Dovecot] Doveadm expunge purge optimize

[Timo Sirainen]

On Wed, 2010-09-29 at 12:51 -0300, Thiago Henrique wrote:
> 01 22 * * * root nice -n 19 /usr/bin/doveadm expunge -A mailbox SPAM
> BEFORE 60d
> 01 00 * * * root nice -n 19 /usr/bin/doveadm purge -A
> 
> Each doveadm command walks through the whole file system. Is there a way
> to run the two operations into a single walk? Does anyone have a
> suggestion that helps optimize this?

Currently there's no way to run multiple commands in one run. I was
thinking about that though.. Maybe it could be something like:

doveadm -A <<EOF
expunge mailbox SPAM BEFORE 60d
purge
EOF

But there's the other thing that by using expire plugin you could
optimize the doveadm expunge -A so that it would only go through those
mailboxes that actually have something to expunge. But then you'd again
have to do a full purge -A run even if the above multi-command handling
was implemented.