dovecot - Mar 2021 - archive namespace reports mdbox_deleted: same as mdbox: is that ok?

New test

step 1. 
======initial state inbox and deleted

[@ testtest]# doveadm -o
mail_location=mdbox:/home/popusers/testtest/mdbox:INDEX=/home/popindex/testtest/index
mailbox status -u testtest 'messages vsize' '*'
Sent messages=17 vsize=7473
Drafts messages=6 vsize=67170
INBOX/test2 messages=198 vsize=12552420
Junk messages=2 vsize=1969
Deleted Messages messages=0 vsize=0
Trash messages=47 vsize=769284
INBOX messages=1117 vsize=207623033

[@ testtest]# doveadm -o
mail_location=mdbox_deleted:/home/popusers/testtest/mdbox:INDEX=/home/popindex/testtest/index
mailbox status -u testtest 'messages vsize' '*'
Sent messages=0 vsize=0
Drafts messages=0 vsize=0
INBOX/test2 messages=0 vsize=0
Junk messages=0 vsize=0
Deleted Messages messages=0 vsize=0
Trash messages=0 vsize=0
INBOX messages=2 vsize=89284

step 2.
======check if we have messages indeed stored

[@ testtest]# grep 45765765870 /home/popusers/testtest/mdbox/storage/*
/home/popusers/testtest/mdbox/storage/m.893:Subject: New file uploaded
45765765870


step 3. 
======delete 5 messages including the one having subject '45765765870'
from inbox/test2 mailbox with thunderbird shift+delete, restart thunderbird
(otherwise nothing happens on server)

step 4. 
======verify if messages are indeed deleted, looks like ok, indeed 5 fewer
messages.

[@ testtest]# doveadm -o
mail_location=mdbox:/home/popusers/testtest/mdbox:INDEX=/home/popindex/testtest/index
mailbox status -u testtest 'messages vsize' '*'
Sent messages=17 vsize=7473
Drafts messages=6 vsize=67170
INBOX/test2 messages=193 vsize=12296609
Junk messages=2 vsize=1969
Deleted Messages messages=0 vsize=0
Trash messages=47 vsize=769284
INBOX messages=1117 vsize=207623033

step 5.
======verify refcount=0 messages in folders, not ok, INBOX/test2 should have 5

[@ testtest]# doveadm -o
mail_location=mdbox_deleted:/home/popusers/testtest/mdbox:INDEX=/home/popindex/testtest/index
mailbox status -u testtest 'messages vsize' '*'
Sent messages=0 vsize=0
Drafts messages=0 vsize=0
INBOX/test2 messages=0 vsize=0
Junk messages=0 vsize=0
Deleted Messages messages=0 vsize=0
Deleted Messages/test messages=0 vsize=0
Trash messages=0 vsize=0
INBOX messages=3 vsize=90243

Adding these steps



step 6.
======check if we have still them message stored, ok as expected

[@ testtest]# grep 45765765870 /home/popusers/testtest/mdbox/storage/*
/home/popusers/testtest/mdbox/storage/m.893:Subject: New file uploaded
45765765870

step 7.
======purge mailbox with

[@ testtest]# doveadm -v purge -u testtest

step 8.
======check if we have still them message stored,  no, ok as expected

[@ testtest]# grep 45765765870 /home/popusers/testtest/mdbox/storage/*
[@ testtest]#

> 
> step 5.
> ======> verify refcount=0 messages in folders, not ok, INBOX/test2
should have 5
> 
> [@ testtest]# doveadm -o
> mail_location=mdbox_deleted:/home/popusers/testtest/mdbox:INDEX=/home/po
> pindex/testtest/index mailbox status -u testtest 'messages vsize'
'*'
> Sent messages=0 vsize=0
> Drafts messages=0 vsize=0
> INBOX/test2 messages=0 vsize=0
> Junk messages=0 vsize=0
> Deleted Messages messages=0 vsize=0
> Deleted Messages/test messages=0 vsize=0
> Trash messages=0 vsize=0
> INBOX messages=3 vsize=90243
> 
This sould list this deleted emails not? If I do doveadm search -u testtest
mailbox 'INBOX/test2' DELETED, it lists these emails.