Support Policy for DFS (Distributed File System) and ClearCase

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Support Policy

DFS is not a supported configuration with any version of ClearCase.

Note: Rational ClearCase and DFS can coexist on the same server as long as ClearCase is not attempting to access any information within DFS. The ClearCase resources, such as the installation directory and view/VOB storage, should not be accessed through DFS.

The only supported resolution is to disable DFS and remove the root replica of the DFS system. Once DFS is removed, the problem will be resolved.

Microsoft® Windows®:

Note: These are only general guidelines. Consult your operating system guides or help files for more details. Contact Microsoft for further information about disabling DFS.

To remove the display of a DFS root:

1. Stop ClearCase Services from the ClearCase Control Panel
   
   
2. Open DFS (click Start > Programs > Administrative Tools > Distributed File System)
   
   
3. In the console tree, right-click the DFS root node.
   
   
4. Click Remove Display of DFS Root, then click Yes.
   
   
5. Start ClearCase Services

Note: The DFS root is removed from the console, it is not removed from the host computer. User access to the DFS root is not affected by this procedure.

UNIX® and Linux® using Samba™:

Note: These steps only need to be considered with hosts running Samba 3.0.24 and later. These are only general guidelines. Consult your Samba help files for more details.

Ensure the following lines are set accordingly in the smb.conf file to disable DFS:

• Not all versions of Samba are built to work with DFS.
• A reboot is needed for the Windows clients that had a connection to the Samba server before DFS was disabled.