3.5.1 Matrix Server Administration Guide

Manage Filesystem Quotas

The PSFS filesystem supports disk quotas, including both hard and soft

limits. After quotas are enabled on a filesystem, you can use the Quotas

editor provided with the Management Console to view or set quotas for

specific users and groups.

Hard and Soft Filesystem Limits

The PSFS filesystem supports both hard and soft filesystem quotas for

users and groups. A hard quota specifies the maximum amount of disk

space on a particular filesystem that can be used by files owned by the

user or group. When a file owner reaches the hard limit, the filesystem

will not allow the owner to create files or to increase the size of an

existing file; any attempts to allocate more space will fail. The file owner

will need to remove files or reduce their size until the disk usage falls

below the hard limit.

Soft limits provide a way to warn users (or groups) when they are about

to reach their hard limit. A soft limit is typically set below the hard limit,

and triggers the warning. If you want to use soft limits, you will need to

configure a warning mechanism such as the Linux warnquota utility.

Enable or Disable Quotas

Quotas are enabled or disabled at the filesystem level. When quotas are

enabled, the filesystem performs quota accounting to track the disk use of

each user or group having an assigned filesystem quota.