test:
[sig-storage] In-tree Volumes [Driver: local][LocalVolumeType: blockfs] [Testpattern: Pre-provisioned PV (default fs)] subPath should support non-existent path 

is failing frequently in CI, see search results:
https://search.ci.openshift.org/?maxAge=168h&context=1&type=bug%2Bjunit&name=&maxMatches=5&maxBytes=20971520&groupBy=job&search=%5C%5Bsig-storage%5C%5D+In-tree+Volumes+%5C%5BDriver%3A+local%5C%5D%5C%5BLocalVolumeType%3A+blockfs%5C%5D+%5C%5BTestpattern%3A+Pre-provisioned+PV+%5C%28default+fs%5C%29%5C%5D+subPath+should+support+non-existent+path

The test is failure rate of 25% for 4.6 jobs . Refer https://sippy.ci.openshift.org/?release=4.6

Sep 13 17:38:41.470 E ns/e2e-volume-expand-9742 pod/csi-hostpath-snapshotter-0 node/ci-op-c5ww0v1q-486b5-9txdm-worker-0-bw6l7 container/csi-snapshotter container exited with code 255 (Error): Lost connection to CSI driver, exiting