non-root install- getsystemdisk doesnt show any info

On both single and multi node non-root installs on amazon using local storage, the getsystemdisk doesn't show any information

mcsadmin> getsystemdisk
getsystemdisk Fri Dec 1 15:13:48 2017

System Disk Usage per Module

Module 'pm1' Disk Usage (in 1K blocks)

Mount Point Total Blocks Used Blocks Usage %
----------------------------- ------------ ------------ -------

mcsadmin> exit
exit Fri Dec 1 15:13:57 2017
Exiting the MariaDB ColumnStore Admin Console
[mariadb-user@ip-172-30-0-136 ~]$ df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/xvda2 104845292 6151408 98693884 6% /
devtmpfs 484952 0 484952 0% /dev
tmpfs 507288 15100 492188 3% /dev/shm
tmpfs 507288 12932 494356 3% /run
tmpfs 507288 0 507288 0% /sys/fs/cgroup
tmpfs 101460 0 101460 0% /run/user/1002
[mariadb-user@ip-172-30-0-136 ~]$