Praveen raj Mani 30c2596512 Read drive IO stats from sysfs instead of procfs (#19131) ...

Currently, we read from `/proc/diskstats` which is found to be
un-reliable in k8s environments. We can read from `sysfs` instead.

Also, cache the latest drive io stats to find the diff and update
the metrics.

2024-02-26 11:34:50 -08:00

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