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diff --git a/doc/admin-guide/en-US/markdown/admin_directory_Quota.md b/doc/admin-guide/en-US/markdown/admin_directory_Quota.md index 21e42c66902..402ac5e4fcc 100644 --- a/doc/admin-guide/en-US/markdown/admin_directory_Quota.md +++ b/doc/admin-guide/en-US/markdown/admin_directory_Quota.md @@ -1,6 +1,6 @@ #Managing Directory Quota -Directory quotas in GlusterFS allow you to set limits on usage of disk +Directory quotas in GlusterFS allows you to set limits on usage of the disk space by directories or volumes. The storage administrators can control the disk space utilization at the directory and/or volume levels in GlusterFS by setting limits to allocatable disk space at any level in @@ -8,10 +8,9 @@ the volume and directory hierarchy. This is particularly useful in cloud deployments to facilitate utility billing model. > **Note** -> -> For now, only Hard limit is supported. Here, the limit cannot be +> For now, only Hard limits are supported. Here, the limit cannot be > exceeded and attempts to use more disk space or inodes beyond the set -> limit will be denied. +> limit is denied. System administrators can also monitor the resource utilization to limit the storage for the users depending on their role in the organization. @@ -22,22 +21,20 @@ You can set the quota at the following levels: - **Volume level** – limits the usage at the volume level > **Note** -> > You can set the disk limit on the directory even if it is not created. > The disk limit is enforced immediately after creating that directory. -> For more information on setting disk limit, see ?. ##Enabling Quota You must enable Quota to set disk limits. -**To enable quota** +**To enable quota:** -- Enable the quota using the following command: +- Use the following command to enable quota: - `# gluster volume quota enable ` + # gluster volume quota enable - For example, to enable quota on test-volume: + For example, to enable quota on the test-volume: # gluster volume quota test-volume enable Quota is enabled on /test-volume @@ -48,11 +45,11 @@ You can disable Quota, if needed. **To disable quota:** -- Disable the quota using the following command: +- Use the following command to disable quota: - `# gluster volume quota disable ` + # gluster volume quota disable - For example, to disable quota translator on test-volume: + For example, to disable quota translator on the test-volume: # gluster volume quota test-volume disable Quota translator is disabled on /test-volume @@ -64,20 +61,19 @@ disk limit or set disk limit for the existing directories. The directory name should be relative to the volume with the export directory/mount being treated as "/". -**To set or replace disk limit** +**To set or replace disk limit:** - Set the disk limit using the following command: - `# gluster volume quota limit-usage /` + # gluster volume quota limit-usage / - For example, to set limit on data directory on test-volume where + For example, to set limit on data directory on the test-volume where data is a directory under the export directory: # gluster volume quota test-volume limit-usage /data 10GB Usage limit has been set on /data > **Note** - > > In a multi-level directory hierarchy, the strictest disk limit > will be considered for enforcement. @@ -86,35 +82,78 @@ being treated as "/". You can display disk limit information on all the directories on which the limit is set. -**To display disk limit information** +**To display disk limit information:** - Display disk limit information of all the directories on which limit is set, using the following command: - `# gluster volume quota list` + # gluster volume quota list - For example, to see the set disks limit on test-volume: + For example, to see the set disks limit on the test-volume: # gluster volume quota test-volume list - - /Test/data 10 GB 6 GB /Test/data1 10 GB 4 GB - Display disk limit information on a particular directory on which limit is set, using the following command: - `# gluster volume quota list ` + # gluster volume quota list - For example, to see the set limit on /data directory of test-volume: + For example, to view the set limit on /data directory of test-volume: # gluster volume quota test-volume list /data + /Test/data 10 GB 6 GB +###Displaying Quota Limit Information Using the df Utility - /Test/data 10 GB 6 GB +You can create a report of the disk usage using the df utility by taking quota limits into consideration. To generate a report, run the following command: + + # gluster volume set VOLNAME quota-deem-statfs on + +In this case, the total disk space of the directory is taken as the quota hard limit set on the directory of the volume. + +>**Note** +>The default value for quota-deem-statfs is off. However, it is recommended to set quota-deem-statfs to on. + +The following example displays the disk usage when quota-deem-statfs is off: + + # gluster volume set test-volume features.quota-deem-statfs off + volume set: success + # gluster volume quota test-volume list + Path Hard-limit Soft-limit Used Available + ----------------------------------------------------------- + / 300.0GB 90% 11.5GB 288.5GB + /John/Downloads 77.0GB 75% 11.5GB 65.5GB + +Disk usage for volume test-volume as seen on client1: + + # df -hT /home + Filesystem Type Size Used Avail Use% Mounted on + server1:/test-volume fuse.glusterfs 400G 12G 389G 3% /home + +The following example displays the disk usage when quota-deem-statfs is on: + + # gluster volume set test-volume features.quota-deem-statfs on + volume set: success + # gluster vol quota test-volume list + Path Hard-limit Soft-limit Used Available + ----------------------------------------------------------- + / 300.0GB 90% 11.5GB 288.5GB + /John/Downloads 77.0GB 75% 11.5GB 65.5GB + +Disk usage for volume test-volume as seen on client1: + + # df -hT /home + Filesystem Type Size Used Avail Use% Mounted on + server1:/test-volume fuse.glusterfs 300G 12G 289G 4% /home + +The quota-deem-statfs option when set to on, allows the administrator to make the user view the total disk space available on the directory as the hard limit set on it. ##Updating Memory Cache Size +### Setting Timeout + For performance reasons, quota caches the directory sizes on client. You can set timeout indicating the maximum valid duration of directory sizes in cache, from the time they are populated. @@ -132,11 +171,11 @@ force fetching of directory sizes from server for every operation that modifies file data and will effectively disables directory size caching on client side. -**To update the memory cache size** +**To update the memory cache size:** -- Update the memory cache size using the following command: +- Use the following command to update the memory cache size: - `# gluster volume set features.quota-timeout` + # gluster volume set features.quota-timeout For example, to update the memory cache size for every 5 seconds on test-volume: @@ -144,21 +183,37 @@ on client side. # gluster volume set test-volume features.quota-timeout 5 Set volume successful +##Setting Alert Time + +Alert time is the frequency at which you want your usage information to be logged after you reach the soft limit. + +**To set the alert time:** + +- Use the following command to set the alert time: + + # gluster volume quota VOLNAME alert-time time + + >**Note** + > + >The default alert-time is one week. + + For example, to set the alert time to one day: + + # gluster volume quota test-volume alert-time 1d + volume quota : success + ##Removing Disk Limit You can remove set disk limit, if you do not want quota anymore. -**To remove disk limit** +**To remove disk limit:** -- Remove disk limit set on a particular directory using the following - command: +- Use the following command to remove the disk limit set on a particular directory: - `# gluster volume quota remove ` + # gluster volume quota remove For example, to remove the disk limit on /data directory of test-volume: # gluster volume quota test-volume remove /data Usage limit set on /data is removed - - |