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How a FlexVol volume can reclaim free space with autodelete setting

Contributors netapp-aherbin
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You can enable the autodelete setting of a FlexVol volume to automatically delete FlexClone files and FlexClone LUNs. By enabling autodelete, you can reclaim a target amount of free space in the volume when a volume is nearly full.

You can configure a volume to automatically start deleting FlexClone files and FlexClone LUNs when the free space in the volume decreases below a particular threshold value, and automatically stop deleting clones when a target amount of free space in the volume is reclaimed. Although, you cannot specify the threshold value that starts the automatic deletion of clones, you can specify whether a clone is eligible for deletion, and you can specify the target amount of free space for a volume.

A volume automatically deletes FlexClone files and FlexClone LUNs when the free space in the volume decreases below a particular threshold and when both of the following requirements are met:

  • The autodelete capability is enabled for the volume that contains the FlexClone files and FlexClone LUNs.

    You can enable the autodelete capability for a FlexVol volume by using the volume snapshot autodelete modify command. You must set the -trigger parameter to volume or snap_reserve for a volume to automatically delete FlexClone files and FlexClone LUNs.

  • The autodelete capability is enabled for the FlexClone files and FlexClone LUNs.

    You can enable autodelete for a FlexClone file or FlexClone LUN by using the file clone create command with the -autodelete parameter. As a result, you can preserve certain FlexClone files and FlexClone LUNs by disabling autodelete for the clones and ensuring that other volume settings do not override the clone setting.