Instructions for using DFS (Distributed File System)

The instructions below will assist LLNL users using the DFS file system at LLNL to connect to other ASCI machines. Once established, you can access your DFS directories from (most) any ASCI related machine (including ASCI-RED, ASCI-BLUE-PAC, ASCI-BLUE-MTN).

General DFS info available here. Web-based DFS command interface here.

LLNL users do not have a DFS area set up by default. To set up a DFS area, you will need to contact Reggie Hunt (2-5709) to have a DFS area set up for you. Once set up, you simply move or copy files to /.../spectrum.llnl.gov/fs/u/your_username

To access the files from another Lab, log in to one of their machines and execute the "k5dcelogin" command. From sasn100.sandia.gov, the full path would look like this: "/.../spectrum.llnl.gov/fs/users/your_username". This translates to the same area accessed from LLNL (under a slightly different path). You can then move or copy files to the destination of your choice on the host machine.

Example:

To place a file in the DFS area from k2.llnl.gov:

k2.llnl.gov{your_username}27: cp filename /.../spectrum.llnl.gov/fs/u/your_username
Acknowledgement and Disclaimer

To retrieve the file from sasn100.sandia.gov:

your_username@sasn100> k5dcelogin

your_username@sasn100> cp /.../spectrum.llnl.gov/fs/users/your_username/filename filename

If you can't find k5dcelogin or it doesn't work, contact your sysadmin.

You may be able to copy the kinit and dcelogin software from from asci kerberos webpage.

You can also cd to your DCE area and look around. The LLNL DFS area is currently mounted as read only by Sandia, so you can't actually create or modify files in your LLNL DFS area directly from a Sandia machine. If you have any questions, email me.