IBM General Parallel File System for AIX: Administration and Programming Reference

Default quotas

Applying default quotas ensures all new users or groups of a file system will have minimum quota limits established. If default quota values for a file system are not enabled, a new user or group to that file system has a quota limit of zero which establishes no limit to the amount of space they can use.

To install default quota values for a file system:

1. The file system must have been created or changed with the -Q yes option (see the mmcrfs and the mmchfs commands).
2. Default quotas are enabled via the mmdefquotaon command.
3. Default quota values are established for new users and groups of a file system by issuing the mmdefedquota command.

To apply different quota values for a particular user or group, the system administrator must explicitly configure those values via the mmedquota command. If after explicit quotas for a user or group have been established and it is necessary to reapply the default limits for that user or group, you must issue the mmedquota -d command.

The default quotas can be deactivated by issuing the mmdefquotaoff command.

For example, to create default quotas for users of the file system fs0, enter:

mmdefedquota -u fs0

A prompt in your default editor appears:

*** Edit default quota limits for USR:
NOTE: block limits will be rounded up to the next multiple block size.
gpfs0: blocks in use (in KB): 0, limits (soft = 0, hard = 0)
inodes in use: 0, limits (soft = 0, hard = 0)

See the mmdefedquota Command, mmdefquotaoff Command, mmdefquotaon Command, and mmedquota Command commands for complete usage information.