Determine and control a volume's space usage in a local tier (aggregate)
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You can determine which FlexVol volumes are using the most space in a local tier (aggregate) and specifically which features within the volume.
The volume show-footprint command provides information about a volume's footprint, or its space usage within the containing aggregate.
The volume show-footprint command shows details about the space usage of each volume in an aggregate, including offline volumes. This command bridges the gap between the output of the volume show-space and aggregate show-space commands. All percentages are calculated as a percent of aggregate size.
The following example shows the volume show-footprint command output for a volume called testvol:
cluster1::> volume show-footprint testvol
Vserver : thevs
Volume : testvol
Feature Used Used%
-------------------------------- ---------- -----
Volume Data Footprint 120.6MB 4%
Volume Guarantee 1.88GB 71%
Flexible Volume Metadata 11.38MB 0%
Delayed Frees 1.36MB 0%
Total Footprint 2.01GB 76%
The following table explains some of the key rows of the output of the volume show-footprint command and what you can do to try to decrease space usage by that feature:
Row/feature name |
Description/contents of row |
Some ways to decrease |
|---|---|---|
|
The total amount of space used in the containing aggregate by a volume's data in the active file system and the space used by the volume's Snapshot copies. This row does not include reserved space. |
|
|
The amount of space reserved by the volume in the aggregate for future writes. The amount of space reserved depends on the guarantee type of the volume. |
Changing the type of guarantee for the volume to |
|
The total amount of space used in the aggregate by the volume's metadata files. |
No direct method to control. |
|
Blocks that ONTAP used for performance and cannot be immediately freed. For SnapMirror destinations, this row has a value of |
No direct method to control. |
|
The total amount of space reserved for file operation metadata. |
No direct method to control. |
|
The total amount of space that the volume uses in the aggregate. It is the sum of all of the rows. |
Any of the methods used to decrease space used by a volume. |