Following up on this with a bit more detail:
I have some recollection that we only describe configuring XFS on Ubuntu - https://www.elastic.co/guide/en/cloud-enterprise/2.0/ece-configure-hosts.html#ece-xfs-setup-trusty - because it's usually installed/configured by default on RHEL/Centos, but there are some set ups that bypass that ... the key thing to check is whether you have a line like /dev/xvdg1 /mnt/data xfs defaults,nofail,pquota,prjquota 0 2 corresponding to the data directory
Alex