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Chapter 9. Managing Directory Quotas
Warning
Quota is considered deprecated as of Red Hat Gluster Storage 3.5. Red Hat no longer recommends its use, and does not support Quota in new deployments and existing deployments that upgrade to Red Hat Gluster Storage 3.5.3.
Quotas allow you to set limits on the disk space used by a directory. Storage administrators can control the disk space utilization at the directory and volume levels. This is particularly useful in cloud deployments to facilitate the use of utility billing models.
9.1. Enabling and Disabling Quotas
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To limit disk usage, you need to enable quota usage on a volume by running the following command:
# gluster volume quota VOLNAME enable
This command only enables quota behavior on the volume; it does not set any default disk usage limits.
Note
On a gluster volume with quota enabled, the CPU and memory consumption accelarates based on various factors. For example, complexity of the file system tree, number of bricks, nodes in the pool, number of quota limits placed across the filesystem, and the frequency of quota traversals across the filesystem.
To disable quota behavior on a volume, including any set disk usage limits, run the following command:
# gluster volume quota VOLNAME disableImportant
When you disable quotas on Red Hat Gluster Storage 3.1.1 and earlier, all previously configured limits are removed from the volume by a cleanup process,
quota-remove-xattr.sh. If you re-enable quotas while the cleanup process is still running, the extended attributes that enable quotas may be removed by the cleanup process. This has negative effects on quota accounting.
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