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What type of PR is this?
/kind bug
/kind regression
What this PR does / why we need it:
Do not rely on the device path to determine partition. Read sysfs instead.
Which issue(s) this PR fixes:
Fixes CSI sanity failure:
Volume d-2ze2vto7mqwoffxi2uh9 GetDeviceRootAndIndex with error Device /dev/disk/by-id/virtio-2ze2vto7mqwoffxi2uh9 has error format more than one digit locations
Fixes: 9a71d43
Special notes for your reviewer:
Does this PR introduce a user-facing change?
Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.: