AFS at CSAIL
AFS at CSAIL
AFS is a distributed file system that uses Kerberos for authentication. AFS is cross-platform compatible, has built-in redundancy, fault-tolerance, high availability, and backup/restore management. Plus, it supports a much more granular access control model than standard UNIX modes, including user-defined access groups and even unauthenticated/anonymous access if desired.
The CSAIL AFS cell,
csail.mit.edu, is available on any system with AFS software installed and an internet connection. For the convenience of lab members, TIG runs a public login machine login.csail.mit.edu with AFS configured. Access is via SSH (either via Kerberos tickets or by entering your CSAIL Kerberos password when prompted).
Using AFS at CSAIL
/afs/csail.mit.edu contain the top level CSAIL AFS directores. The ones you are most concered with are:
u: User home directories are stored under this hierarchy. All CSAIL users with a Kerberos principal and INQUIR database entry have an AFS home directory. Your
u: home directory is also where your
group: Contains data shared between members of a research group. If other members of your group use data stored in your personal home directory, it’s probably a good idea to move it into the group directory instead. We’ve found this helps with personnel transitions (for example if you go and graduate or something.) It is also where your groups’
For more information, see also AFS Group Directories
proj: Contains shared data for projects that cross reearch-group boundaries and where your projects’
projalso contains the
/coursesfor academic specific courses.
For more information, see also AFS Project Directories
@sys: There is not actual
@sysis translated into the local host’s architecture and operating system (e.g.,
i386_linux26). Directories named after the output of this command are used to hold operating system and architecture specific binary files.
common: Shared files useful on multiple architectures. Currently this only includes configuration example files. In the future it could contain multi-platform scripts and licensed software that runs on multiple platforms