Comment 11 for bug 1745361

I got same error today i am install Queens 17.0.8

TASK [lxc_hosts : Disable|Enable the machinectl quota system] ***********************************************************************************************
Friday 03 August 2018 23:24:55 -0400 (0:00:01.469) 0:03:29.673 *********
fatal: [ostack-infra-01]: FAILED! => {"changed": false, "cmd": ["btrfs", "quota", "enable", "/var/lib/machines"], "delta": "0:00:00.010204", "end": "2018-08-03 23:24:56.396433", "failed": true, "msg": "non-zero return code", "rc": 1, "start": "2018-08-03 23:24:56.386229", "stderr": "ERROR: not a btrfs filesystem: /var/lib/machines", "stderr_lines": ["ERROR: not a btrfs filesystem: /var/lib/machines"], "stdout": "", "stdout_lines": []}
fatal: [ostack-infra-03]: FAILED! => {"changed": false, "cmd": ["btrfs", "quota", "enable", "/var/lib/machines"], "delta": "0:00:00.014247", "end": "2018-08-03 23:24:56.471986", "failed": true, "msg": "non-zero return code", "rc": 1, "start": "2018-08-03 23:24:56.457739", "stderr": "ERROR: not a btrfs filesystem: /var/lib/machines", "stderr_lines": ["ERROR: not a btrfs filesystem: /var/lib/machines"], "stdout": "", "stdout_lines": []}
fatal: [ostack-infra-02]: FAILED! => {"changed": false, "cmd": ["btrfs", "quota", "enable", "/var/lib/machines"], "delta": "0:00:00.013839", "end": "2018-08-03 23:24:56.589439", "failed": true, "msg": "non-zero return code", "rc": 1, "start": "2018-08-03 23:24:56.575600", "stderr": "ERROR: not a btrfs filesystem: /var/lib/machines", "stderr_lines": ["ERROR: not a btrfs filesystem: /var/lib/machines"], "stdout": "", "stdout_lines": []}