Comment 5 for bug 1618022

The code [1] does not distinguish between different error conditions:

a) connection to the remote host failed
b) running sudo on the remote host failed
c) the volume which contains the file hasn't been attached [yet]
d) the filesystem on that volume has been corrupted (due to improper umount)
e) the file hasn't been created (due to the above listed reasons)

Please improve the check so it blames the correct component, or provide some logs indicated that the problem is caused by ceph.

[1] https://github.com/openstack/fuel-qa/blob/stable/mitaka/fuelweb_test/tests/test_ceph.py#L801-L805