OpenAFS on Windows

Install OpenAFS on Windows

  1. CSAIL Kerberos for Windows installed and configured
  2. Download OpenAFS installers from OpenAFS and unzip its files

    both the 64-bit MSI installer, and the 32-bit tools MSI installer must be downloadedand installed.

  3. Start 64 bit installer (name like openafs-en_US-XXX-1-7-XX.msi)
  4. Click next, accept the License Agreement, click next.
  5. Choose Setup Type: “Typical”
  6. At “Configure OpenAFS Client:”
    • Default Cell: csail.mit.edu .
    • Integrated Logon: use Enable only if your Windows username and password match your CSAIL username and password and you use AFS often. If not, choose Disable.
    • Click Next.
  7. At “Options for AFS Credentials:”
    • Start AFS Credentials at startup: NO *(important)*
    • Click Next, then Install.
  8. Reboot Windows if prompted.
  9. Run the 32bit-tools installer left over from step 1 to complete the installation.

Mapping Drive Letters

Windows ACL Editor

You can change the permissions of AFS folders from Windows. Right-click on the folder you want to modify.

Known Issues

  1. If you need access to Athena AFS and/or to use Athena Kerberos tickets (eg for SAPgui) at the same time that you’re accessing CSAIL AFS, we recommend only obtaining Athena Kerberos tickets and configuring AFS as described in the Cross-Cell How to.
  2. My U:\ went away after I upgraded OpenAFS (to > 1.5.66)
    • The AFS client in general and afscreds (the lock icon) in particular no longer map drives. You can re-create the mapped drives in Windows Explorer by going to My Computer, choosing [Tools] Map Network Drive, and clicking “Browse” to find for example \\AFS\csail.mit.edu\u\y\you (citation)
  3. Where’s the OpenAFS control panel? (Vista, Windows 7)
    • The OpenAFS control panel is not yet User Account Control compliant, which means you need to start it as administrator. To do this, first switch your control panel view away from Category, into either “Classic” or “Icon” view. Then double-click “AFS Client Configuration.” You may be prompted either to start the AFS control panel As Administrator, or to restart it in compatibility mode; do so.

Performance Adjustments (optional)

If your hard disk (C:) has many GB free, the following adjustments to the AFS Client Service will result in better performance:

  1. In Start Control Panel, choose “View By: small icons” or “Classic view”. You want “AFS Client Configuration.”
  2. Select the Advanced tab.
    • Cache Size: increase to between 512000 and 1024000
    • Chunk Size: click up arrows until 1024
  3. Dismiss the various AFS Client windows by clicking the OK buttons.
  4. If prompted, restart the AFS Client.
  5. If asked, choose “This control panel performed correctly.”