[Akonadi] [Bug 341192] New: Moving messages does not synchronize to disk

[Rigo Wenning]

https://bugs.kde.org/show_bug.cgi?id=341192

            Bug ID: 341192
           Summary: Moving messages does not synchronize to disk
           Product: Akonadi
           Version: GIT (master)
          Platform: openSUSE RPMs
                OS: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: NOR
         Component: IMAP resource
          Assignee: chrigi_1 at fastmail.fm
          Reporter: rigo at w3.org
                CC: kdepim-bugs at kde.org, vkrause at kde.org

I have a large imap folder, too large for imap. So I expired all messages older
than 120 days to a folder on my local disk (about 4500). In kmail, those
messages were moved. Akonadiconsole shows all messages in the new local folder.
I can see and access the messages. But if I go to
.local/share/.local-mail-directory/.archive/new-folder/ and do a ls -lR, there
are no messages stored on disk. Akonadi simply does not synchronize the moved
messages to disk. But it is supposed to. It also seems to be a matter of scale.
Because later expired messages -expired one by one- arrive physically on the
disk in the new location. How can I force Akonadi to write down its cache to
disk?

Reproducible: Sometimes

Steps to Reproduce:
1. Move more than 1000 messages from an imap resource to a local folder
2. 
3.

Actual Results:  
Akonadi shows messages, but the messages are never written to disk

Expected Results:  
Akonadi is a cache. It should write those messages to the disk at the expected
location.

I had that already in the past. This situation will at some point in time turn
into akonadi realising that there are no messages on the disk, synchronise with
the disk and thus erasing all messages that were moved into the local folder.
So the message loss hasn't occurred yet, but will occur soon.

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