Filtering the List of Volumes

The filter lets you build search expressions to provide sophisticated filtering capabilities for locating specific data on views that display a large number of volumes. Expressions are implicitly connected by the AND operator.

Filtering the List in the MapR Control System

  1. Log in to MCS and click Data > Volumes to filter volumes in the Volumes pane.
  2. Click and and select one of the following from the Add Filter dropdown menu:
    • Volume — to filter the list by volume name
    • Mount Path — to filter the list by mount path
    • Creator — to filter the list by entity or volume owner
    • Total Size — to filter the list by size of volume
    • Usage — to filter the list by amount of disk used
    • Replication Factor — to filter the list by replication factor
    • Tier Type - to filter by a type of tier
    • Physical Topology — to filter by the rack path
    • Quota — to filter by hard quota
    • Data on Wire Encryption — to filter by volumes enabled (On) or disabled (Off) for on-wire encryption
    • Data at Rest Encryption — to filter by volumes enabled (On) or disabled (Off) for data-at-rest encryption (DARE)
  3. Specify the value in the dropdown field for the selected filter (to filter the list of volumes by) and click Filter.

    As you make selections and specify the filtering criteria, the pane displays only the volumes that match the specified filtering criteria.

  4. Click:
    • Add Filter to add another filtering criteria.
    • to remove a filtering criteria.
    • to clear all filter settings.

Filtering the List Using the CLI

The volume list command can be used with the -filter option, which let you specify large numbers of volumes by matching specified values in specified fields rather than by typing each name explicitly. For example, you can display all volumes whose owner is root and whose name begins with test as follows:

maprcli volume list -filter [n=="test*"]and[on=="root"]

For more information, see Filters.