dovecot - Oct 2010 - Doveadm-Expunge v2.0.5

Hello

Few questions regarding Doveadm-Expunge.

1.

I have lazy expunge configure with this name space: .EXPUNGED

Storage type: mdbox

doveadm -Dv expunge -u user at domain mailbox ".EXPUNGED/*"
savedbefore 7d

I get some interesting outputs.

doveadm(user at domain): Debug: expunge: box=.EXPUNGED/INBOX/mon uid=791
doveadm(user at domain): Debug: expunge: box=.EXPUNGED/INBOX/mon uid=792
doveadm(user at domain): Debug: expunge: box=.EXPUNGED/INBOX/mon uid=793
....
doveadm(user at domain): Info: expunge: box=INBOX/mon, uid=196,
msgid=<E1OwJm4-0000j4-1l at domain>, size=1856
doveadm(user at domain): Info: expunge: box=INBOX/mon, uid=197,
msgid=<E1OwJmP-0000pr-4M at domain>, size=1756
doveadm(user at domain): Info: expunge: box=INBOX/mon, uid=198,
msgid=<E1OwJpP-0002Hp-Pu at domain>, size=1810
doveadm(user at domain): Info: expunge: box=INBOX/mon, uid=199,
msgid=<E1OwJqw-0002y7-AF at domain>, size=1766
doveadm(user at domain): Info: expunge: box=INBOX/mon, uid=200,
msgid=<E1OwJud-0004ba-Fe at domain>, size=1890
...

So what is the diff between "Debug: expunge" and "Info:
expunge".
Anything done to "Info: expunge"? I am assuming the "debug:
expunge"
are the only entries with actions. And "Info: expunge" is not doing
anything. I ran doveadm purge -u user at domain after. I did not notice
any missing emails. Sorry for the trivial question, I just want to
make sure not mail would disappear, all of sudden.

1.A.
Would not it be faster not to enumerate for large mailboxes (30-40GB -
Maildir)? Is it possible to add a switch, to select single user
expunge behavior?
ref: http://www.mail-archive.com/dovecot at dovecot.org/msg32322.html

2.
Also. expunge does not appear to remove empty mailboxes, is this a bug
or intentional? If intentional, why? Any way to automated removal of
empty mailboxes?


Thank you
KuiZ

On 28.10.2010, at 5.50, Kui Zhang wrote:
> doveadm -Dv expunge -u user at domain mailbox ".EXPUNGED/*"
savedbefore 7d
..
> doveadm(user at domain): Debug: expunge: box=.EXPUNGED/INBOX/mon uid=791
> doveadm(user at domain): Info: expunge: box=INBOX/mon, uid=196,
> msgid=<E1OwJm4-0000j4-1l at domain>, size=1856
> 
> So what is the diff between "Debug: expunge" and "Info:
expunge".
The "Debug: expunge" is written by doveadm, because you gave it a -D
parameter. It tells what messages it's about to expunge. The "Info:
expunge" is written by mail_log plugin when anything gets expunged.
> 1.A.
> Would not it be faster not to enumerate for large mailboxes (30-40GB -
> Maildir)? Is it possible to add a switch, to select single user
> expunge behavior?
> ref: http://www.mail-archive.com/dovecot at dovecot.org/msg32322.html
I don't understand. The default is to expunge only a single user. And why do
you mention maildir if you're using mdbox? In any case the size of the
mailbox is rather irrelevant. Number of messages is more relevant.
> 2.
> Also. expunge does not appear to remove empty mailboxes, is this a bug
> or intentional? If intentional, why? Any way to automated removal of
> empty mailboxes?
Well, for your situation when removing mails from .EXPUNGED/ it makes sense, but
for anything else it definitely shouldn't be automatically deleting any
mailboxes. Maybe there could be an option to do this, although it's a bit
problematic if doveadm expunge is being run at the same time as user is
expunging more messages. It shouldn't delete mailbox if new messages just
got added there. (And that probably isn't very easy to implement.)