[Samba] Alternative data stream on volume cannot be created

[Tao Sang]

Hello,

 

I met an issue to create ADS on a volume to store meta info.

A Samba server on Ubuntu is configured as follows to provide a share for
Windows client.  

 

OS: Ubuntu 14.04.1 LTS.

SAMBA: Version 4.1.6-Ubuntu

Kernel: 3.13.0-34-generic

 

The policy is as follows,

 

[Share]

path = /home/daniel/Public/sharefolder1

read only = no

browseable = yes

guest ok = no

create mask = 0777

directory mask = 0777

vfs objects = streams_xattr

 

On Win7 64bit client, I opened a console to test and got  the following
results:

 

1. File data stream can be created.

 

echo "sdfsdfc' > \\Server\Share\file:MetaInfo

 

Where Server is the computer name of the Ubuntu  machine; file is an
existing file name.. 

 

The command  succeeds.

 

 

2. Folder data stream can be created .

 

echo "sdfds" > \\Server\Share\fold\:MetaInfo

 

Where fold is an existing  directory name.

 

It succeeds as well.

 

 

3. Volume data stream cannot be created.

 

echo "dfvddfv" > \\Server\Share\:MetaInfo

 

It fails with an error message: The system cannot find the file
specified.

 

I tested on a  network folder shared  by windows machine, the volume
data stream can be created.

 

 

Is this the limitation of Linux Samba share?

 

Could anybody help me with this?

 

Thanks!