[Samba] User cannot write to own directory on samba 3.6.3

Andrew Martin amartin at xes-inc.com
Fri Dec 13 16:53:04 MST 2013


I have Samba 3.6.3 installed on an Ubuntu 12.04 fileserver which uses a Samba 4 Active Directory server for user authentication. Here is the smb.conf:

Occasionally, a user accessing a share from a Windows 7 Pro client will become unable to write to a file that they own in a directory that they own or that they have write access through their group membership (rwxrwxr--). I have found that this can sometimes be resolved by killing the smbd process for that particular share on that machine (pid found via smbstatus). Connecting to the share via a CIFS server or directly on the fileserver itself as that user allows the user to write to the directory as expected, so this appears to be an issue with Windows 7 interacting with samba.

Here's an example of a smbd log from a machine where the user could not write to the directory or file, even after I killed the smbd process and verified that there were no open file handles to this file:

What else can I try to debug this and prevent this permission problem from occurring?



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