Removing Volumes
About this task
You can remove a volume using MCS and the CLI.
Removing Volumes Using the MapR Control System
About this task
To remove one or more volumes, in the Summary tab under :
Procedure
- Select the volumes to remove from the list of volumes in the Volumes pane.
-
Click Remove Volume(s) from the
Actions dropdown menu.
The Remove Volume(s) confirmation dialog displays.
-
Choose one of the following:
- Remove gracefully — Specifies whether to check
for dependencies before removing the volume. If the volume has dependencies,
such as associated snapshots, the volume will not be deleted, but an alarm
will be raised.NOTE: Volume will not be deleted if mirroring is in progress as the mirror volume is synchronized from a hidden internal snapshot of the source volume.
- Remove completely — Indicates that volume must be removed forcefully, even if the volume has dependencies.
- Remove gracefully — Specifies whether to check
for dependencies before removing the volume. If the volume has dependencies,
such as associated snapshots, the volume will not be deleted, but an alarm
will be raised.
-
Click Remove Volume.
The selected volumes are removed.
Removing a Standard Volume Using the MapR Control System
About this task
To remove a standard volume from the volume information page:
Procedure
-
Select Remove Volume(s) from the Select
an Action dropdown list.
The Remove Volume(s) confirmation dialog displays.
-
Choose one of the following:
- Remove gracefully — Specifies whether to check
for dependencies before removing the volume. If the volume has dependencies,
such as associated snapshots, the volume will not be deleted, but an alarm
will be raised.NOTE: Volume will not be deleted if mirroring is in progress as the mirror volume is synchronized from a hidden internal snapshot of the source volume.
- Remove completely — Indicates that volume must be removed forcefully, even if the volume has dependencies.
- Remove gracefully — Specifies whether to check
for dependencies before removing the volume. If the volume has dependencies,
such as associated snapshots, the volume will not be deleted, but an alarm
will be raised.
- Click Remove Volume.
Removing a Mirror Volume Using the MapR Control System
About this task
To remove a mirror volume from the volume information page:
Procedure
-
Select Remove Volume from the Select an
Action dropdown list.
The Remove Volume confirmation dialog displays.
-
Choose one of the following:
- Remove gracefully — Specifies whether to check for dependencies, such as associated snapshots, before removing the volume. If mirroring is in progress, the volume will not be deleted as the mirror volume is synchronized from a hidden internal snapshot of the source volume; however, an alarm will be raised.
- Remove completely — Indicates that volume must be removed forcefully, even if the volume has dependencies.
- Click Remove Volume.
Removing Volumes Using the CLI or REST API
About this task
The basic command to remove a volume is:
maprcli volume remove -name <volume name>For complete reference information, see
volume remove.
NOTE: When a volume is removed, the data present in that volume is not purged from
the file system immediately. The following parameters control when the deleted
volumes are purged.
- cldb.purge.delay.hours — Time to wait (in hours) to trigger purge of any volume after CLDB becomes master. The default value is 1 hour.
- cldb.volumes.purge.frequency — The frequency (in minutes) for purging
the data of deleted volumes. The default value is 60 minutes.Use the
maprclicommand to set these parameters. For example:maprcli config save -values {"cldb.purge.delay.hours":"2"} maprcli config save -values {"cldb.volumes.purge.frequency":"120"}