Volume Permissions

You can modify volume permissions using the acl set and acl edit commands,or through the MapR Control System. By default, the root user and the volume creator have full control permissions on the volume. To mount or unmount volumes under a directory, the user must have read/write permissions on the directory. See MapR-FS Permissions.

The following table lists the actions a user can perform on a volume, and the corresponding codes used in the volume ACL.


Allowed Action


Dump or back up the volume


Mirror or restore the volume


Modify volume properties, create and delete snapshots


Delete a volume

a Administrator (can edit and view ACLs, but cannot perform volume operations)


Full control over the volume (this enables all volume-related administrative options with the exception of changing the volume ACLs)