FedFsGlossary

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A FedFS domain is a file name space that can cross multiple shares on multiple file servers.  A FedFS domain is typically a single administrative entity, and has a name that is similar to a DNS domain name.
A FedFS domain is a file name space that can cross multiple shares on multiple file servers.  A FedFS domain is typically a single administrative entity, and has a name that is similar to a DNS domain name.
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=== File-access client ===
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A file-access client accessed data stored on fileservers via a standard file-access protocol such as SMB or NFS.
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=== Fileserver ===
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A fileserver provides access to file storage via a standard file-access protocol such as NFS or SMB.
=== Globally Useful Name ===
=== Globally Useful Name ===

Revision as of 21:22, 17 October 2012

Contents

Project: fedfs-utils

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Introduction

This article contains a glossary of terms related to FedFS.

Glossary

Domain Root Directory

A domain root directory is the top-level directory of a FedFS domain.

FedFS

FedFS is short for Federated File System. It's a set of administrative protocols and techniques for creating a file name space that can cross multiple shares on multiple file servers, and is consistent no matter which client it is accessed from.

FedFS Domain

A FedFS domain is a file name space that can cross multiple shares on multiple file servers. A FedFS domain is typically a single administrative entity, and has a name that is similar to a DNS domain name.

File-access client

A file-access client accessed data stored on fileservers via a standard file-access protocol such as SMB or NFS.

Fileserver

A fileserver provides access to file storage via a standard file-access protocol such as NFS or SMB.

Globally Useful Name

The Globally Useful Name is a pathname in the FedFS domain namespace which is the same no matter which client is used to access the file.

Junction

A junction is a link between two shared file systems. The two shared file systems may not reside on the same server. There may be more than one replica of the linked-to shared file system, stored on several different file servers. Junctions store a list of locations.

Junction Resolution

The process where a file server converts the contents of a junction to a list of locations that can be used to respond to a client during a referral event.

Location

Each replica of the linked-to file system is called a fileset location, or location, for short. A location is represented as an export path paired with a server name or IP address.

Namespace Database

A Namespace Database, also known as an NSDB, is the central repository of FedFS domain namespace information that is shared among all file servers in a FedFS domain. It is accessed via the LDAP protocol.

Referral

A referral event occurs when a file server reports to a client that the object (typically a directory) the client is attempting to access has moved. The client responds by requesting a list of locations where it can find the object.

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