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Dell Unity™ Family Unisphere® Command Line Interface User Guide

Manage quota settings

Managing quota settings includes selecting a quota policy for a file system, setting default limits for a file system or quota tree, setting a default grace period, and disabling the enforcement of space usage limits for a quota tree and user quotas on the tree.

The following table lists the attributes for configuration quota functionality:

Table 1. Attributes for configuring quota functionality
Attribute Description
Path Quota tree path relative to the root of the file system. For a file system, either do not use this attribute, or set its value to /.
Quota policy (Applies to file systems only.) Quota policy for the file system. Valid values are:
  • blocks. Calculates space usage in terms of file system blocks (8 KB units). Block usage depends solely on the number of bytes added to or removed from the file. Any operation resulting in allocating or removing blocks, such as creating, expanding, or deleting a directory, writing or deleting files, or creating or deleting symbolic links changes block usage.

    When using the blocks policy, a user can create a sparse file whose size is larger than the file size, but that uses fewer blocks on the drive.

    Optionally, use this policy for NFS-only and multiprotocol file systems.

  • filesize (default). Calculates space usage in terms of logical file sizes and ignores the size of directories and symbolic links. Use the File policy in the following circumstances:
    • When you have an SMB-only file system
    • When file sizes are critical to quotas, such as when user usage is based on the size of the files created, and exceeding the size limit is unacceptable.
User quota (Applies to file systems only.) Indicates whether to enforce user quotas on the file system. Valid values are:
  • on. Enable the enforcement of user quotas on the file system or quota tree.
  • off. Disable the enforcement of user quotas on the file system or quota tree.
NOTE:Because these operations impact system performance, it is recommended that you perform them only during non-peak production hours. When user quota enforcement is enabled, you can change quota settings without impacting performance.
Deny access Indicates whether to enforce quota space usage limits for the file system. Value is one of the following:
  • yes. (Default) Enforce quota space usage limits for the file system or quota tree. When you choose this option, the ability to allocate space is determined by the quota settings.
  • no. Do not enforce quota functionality for the file system or quota tree. When you choose this option, the ability to allocate space will not be denied when a quota limit is crossed.
Grace period Time period for which the system counts down days once the soft limit is met. If the grace period expires for a file system or quota tree, users cannot write to the file system or quota tree until more space becomes available, even if the hard limit has not been crossed.

The grace period can be set to infinite in order to allow IO to continue after the soft limit is exceeded (until the hard limit is reached).

Default soft limit Default preferred limit on storage usage for user quotas on the file system, quota trees in the file system, and user quotas on the quota trees in the file system. The system issues a warning when the soft limit is reached.
Default hard limit Default hard limit for on storage usage for user quotas on the file system, quota trees in the file system, and user quotas on the quota trees in the file system. If the hard limit is reached for a file system or quota tree, users will not be able to write data to the file system or tree until more space becomes available. If the hard limit is reached for a user quota on a file system or quota tree, that user will not be able to write data to the file system or tree.
Tree quota update time Tree quota report updating time. The format is YYYY-MM-DD HH:MM:SS.
User quota update time User quota report updating time. The format is YYYY-MM-DD HH:MM:SS.

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