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OpenAFS and Windows

Before installation

Are you running a 64-bit Windows OS? Right-click My Computer (or Start -> Computer), then choose Properties. If you see "System type: 64-bit Operating System", then choose items marked 64-bit Windows in all instructions and downloads.

Make sure you can obtain tickets for _you_@CSAIL.MIT.EDU using Kerberos for Windows. Start -> Programs -> Kerberos for Windows -> Credentials -> Obtain New Credentials. If it's not installed, download and run CSAIL's Kerberos for Windows installer.

You'll also need CSAIL Certificates for all download links.

Install OpenAFS

  1. Download the OpenAFS installer from OpenAFS and unzip its files.
    • If you are running 64bit Windows, both the 64-bit MSI installer, and the 32-bit tools MSI installer must be downloaded and installed
  2. Start the 32 or 64 bit installer (name like openafs-en_US-XXX-1-7-XX.msi)
  3. Click next, accept the License Agreement, click next.
  4. Choose Setup Type: "Typical"
  5. At "Configure OpenAFS Client:"
    • Default Cell: .
    • Integrated Logon: We recommend Enable, but only if your Windows username and password match your CSAIL username and password. If not, choose Disable.
    • Click Next.
  6. At "Options for AFS Credentials:"
    • Start AFS Credentials at startup: NO (important!)
    • Click Next, then Install.
  7. Reboot Windows if prompted.
  8. 64-bit Windows OS only: start the 32bit-tools installer left over from step 1.

Mapping Drive Letters

  • Right-click My Computer (may appear as Start -> Computer) and choose "Map Network Drive".
  • Drive: Choose the drive letter you wish to use, for example G:
  • Folder: Enter the path with backslashes (\), eg \\afs\\group\yourgroup
  • Reconnect at logon: leave checked YES.
  • Click OK.

Windows ACL Editor

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

From the window you can create a new ACL or change the properties of an existing one.

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 Howto.
  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\\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."
Topic attachments
I Attachment Action Size Date Who Comment
afs2.pngpng afs2.png manage 1712.3 K 12 Sep 2007 - 18:52 LaurenBurka  
afs3.pngpng afs3.png manage 1291.7 K 12 Sep 2007 - 18:51 LaurenBurka  
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Topic revision: 18 Dec 2013, JasonDorfman

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