In a eZ Publish 4.7 installation set in DFS cluster mode with the "TransformationGroup=urlalias_iri" setting, when trying to upload an image containing Chinese characters, the image cannot be displayed. This happens when the image name is in "<chinese_chars>.jpg" or in "<chinese_chars>-001.jpg" format, and results in a "Data error." message everytime the folder where the image was created is accessed. Error log registers the following:

[ Jun 03 2013 21:55:24 ] [127.0.0.1] :
Failed copying DFS://var/ezflow_site/storage/images/media/images/tests/双镜头半球摄像机.jpg/345-1-eng-GB/双镜头半球摄像机.jpg.jpg to FS://var/ezflow_site/storage/images/media/images/tests/双镜头半球摄像机.jpg/345-1-eng-GB/双镜头半球摄像机.jpg14408tmp.jpg 
[ Jun 03 2013 21:55:24 ] [127.0.0.1] eZImageManager::createImageAlias:
Failed converting var/ezflow_site/storage/images/media/images/tests/双镜头半球摄像机.jpg/345-1-eng-GB/双镜头半球摄像机.jpg.jpg to alias 'reference' in directory 'var/ezflow_site/storage/images/media/images/tests/双镜头半球摄像机.jpg/345-1-eng-GB'
[ Jun 03 2013 21:55:24 ] [127.0.0.1] eZImageManager::createImageAlias:
Failed creating the referenced alias reference, cannot create alias small

Notes:

• Issue does not occur when using "001-<chinese_chars>.jpg" format;
• Image language is not relevant for this. Images can be created in English or any other languages and the problem is still reproducible;
• Not related to the image's corrupted EXIF metadata;
• Not related with using non UTF-8 DB character set (e.g. latin1), as once thought.

Steps to reproduce:

In an eZ Publish 4.7 clean, fully patched installation:

1. Set installation in DFS cluster mode;
2. Add the following setting to site.ini.append.php:

[URLTranslator]
TransformationGroup=urlalias_iri

3. Go to "Media library" tab and add an image either in "<chinese_chars>.jpg" or in "<chinese_chars>-001.jpg" format.