[Netatalk-admins] Samba und Netatalk interoperability question

[Stefan R. <st...@lo...>]

Hi,

I'm currently testing a mixed samba4 / netatalk 3.1.0 environment on FreeBSD 
9.2 with a OSX mountain lion client. This is mostly because of the new 
AppleDouble backend that claims to be compatible with the CIFS client. See 
http://netatalk.sourceforge.net/3.0/htmldocs/upgrade.html:

"the format of the ._ file is exactly as the Mac’s CIFS client expects it when 
accessing the same filesystem via a CIFS server (Samba), thus you can have 
parallel access from Macs to the same dataset via AFP and CIFS without the 
risk of loosing data (resources or metadata)."

However, this doesn't work for me. This is how a font looks when stored with 
Netatalk 3.1.0:

# ls -l ._WiesbSwiRom WiesbSwiRom
-rw-rw-rw-  1 srompf  wheel  43126 Nov  2 18:40 ._WiesbSwiRom
-rwx------  1 srompf  wheel      0 Feb 10  2009 WiesbSwiRom
# lsextattr user ._WiesbSwiRom WiesbSwiRom
._WiesbSwiRom
WiesbSwiRom     org.netatalk.Metadata

As expected, the main file contains an EA with finder data etc. and the 
resource fork is a separate file.

This is how the font looks when stored with Samba 4, either 
.com.apple.smb.streams.off set in the root directory of the share or streams 
disabled:

# ls -l ._WiesbSwiRom WiesbSwiRom
-rwx------  1 srompf  wheel  46854 Nov  2 18:53 ._WiesbSwiRom
-rwx------  1 srompf  wheel      0 Feb 10  2009 WiesbSwiRom
# lsextattr user ._WiesbSwiRom WiesbSwiRom
._WiesbSwiRom   DOSATTRIB
WiesbSwiRom     DOSATTRIB

See the different sizes of the two dot-underscore files. In the CIFS case, it 
seems to contain metadata beside the resource fork.

Consequently, the font stored with samba cannot be displayed when accessed 
with netatalk and and the other way round.

Any idea?

Stefan