[Bug 295893] New: Data loss on moving mails from one IMAP folder to another within same IMAP account

[Claus Wilke]

https://bugs.kde.org/show_bug.cgi?id=295893

            Bug ID: 295893
          Severity: critical
           Version: 4.8
          Priority: NOR
          Assignee: kdepim-bugs at kde.org
           Summary: Data loss on moving mails from one IMAP folder to
                    another within same IMAP account
    Classification: Unclassified
                OS: Linux
          Reporter: wilke at spamcop.net
          Hardware: openSUSE RPMs
            Status: UNCONFIRMED
         Component: commands and actions
           Product: kmail2

User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/534.34 (KHTML,
like Gecko) konqueror/4.8.0 Safari/534.34
Build Identifier: 

So, after using KMail2 for about 3 months, I've finally been bitten by a data
loss bug. I tried to move a moderate number of mails (~40) from one folder to
another within the same IMAP account. KMail2 seemed to have copied them
correctly, but then didn't display anything when I tried to click on some of
the mails in the new folder. (Instead, I just saw the green image that shows up
while KMail is connecting to an IMAP account.) After a while of nothing
happening, I stopped and restared akonadi. The result was that the mails had
disappeared from the original folder but never arrived in the new folder.

This is rather annoying. These were important mails, actually. Why are mails
being deleted in the original location when they haven't safely arrived in the
new location yet?

Reproducible: Didn't try

Steps to Reproduce:
1. Move mails from one folder to another.
2. Kmail hangs.
3. Stop akonadi.
Actual Results:  
Data loss.

Expected Results:  
Mails arrive safely in new location.

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