[Kde-pim] Mail loss on copy - the cause

[Thomas Olsen]

On Thursday 29 September 2011 02:29:44 Andras Mantia wrote:
> Hi,
> 
>  after a long night I *think* I found the problem for the often reported
> issue that the mail bodies are not copied.
> To test do the following:
> - create a new folder (I created a new mixedmail resource pointing to an
> empty folder)
> - d&d a folder from another resource (e.g a maildir) into it
> - watch how the created files are all 1 byte long
> 
> The only requirement is that you have NOT looked at the content of the mails
> from the source folder or you did it a long time ago, so Akonadi removed
> the payloads from the cache.
> 
> I think you can guess what is the problem. If an item's payload is not in
> the cache, the target resource does not get the payload. It gets an empty
> bytearray instead. Actually not even the server has the data when it
> performs the item copy in src/handler/copy.cpp.
> This might sound weird as both copy.cpp and colcopy.cpp has a similar code
> before starting the copy operation:
> 
>   // retrieve all not yet cached items of the source
>   ItemRetriever retriever( connection() );
>   retriever.setCollection( source, true );
>   retriever.setRetrieveFullPayload( true );
>   retriever.exec();
> 
> Even more, this code actually works and gets the payload. But for some
> reason - and this is what I couldn't find - the payload arrives too late(?)
> or it is not visible for the copying code.
> 
> If you copy the same source folder the second time, it does copy the
> content, the payload was loaded.
> 
> I admit I don't know how the ItemRetriever works, although I looked briefly
> in the code, I don't have a good overview about its working/locking
> mechanism.
> 
> I hope others can confirm that this is what happens and Volker can come up
> with a fix asap. :)

I wish I had seen this message earlier. I've just lost almost all of my 
membership information mails and payment receipts after migrating from Gmail.
*Not* a happy camper...

-- 
Best regards / med venlig hilsen

Thomas Olsen


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