Managing the AMASS File System

Database and Journal Backups

File System Database—The File System Database contains tables of attributes—or metadata—representing the directory structure and media mounted under the AMASS file system.

The metadata includes: media ID, media type, media location, ownership, and timestamp.

The default location of the Database is in /usr/filesysdb.

The File System Database tells AMASS where data is located on the media archived in your library (or where data is located on offline media). The following figure illustrates the concept of how the Database maps the file system to the volumes in the library.

Volumes contain “real” data.

The File System Database contains metadata, which includes the directory structure, file attributes, media information, and storage information.

AMASS

Inodes

File

SystemInodes

Database

Inodes map the metadata to “real” data found on the media.

UNIX Server

Journal—The Journal is a transaction log for the AMASS Database.

The default location of the Journal is in /usr/filesysdb/journal. Typically, this is a symbolic link pointing to a separate physical disk to keep the Journal on a different disk from the File System Database.

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Operational Tasks

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