Refactor block device I/O statistics

- Store block device id as major:minor pair
  They are more readable and useful as major-minor pair.
  ID anyway should be that size, because libc dev_t is 64-bit.

  Signed-off-by: Konstantin Khlebnikov <khlebnikov@tracto.ai>

- Remove /proc/diskstats parser
  This code is unused.
  Fetching statistics for all disks at once is very ineffective.

  Signed-off-by: Konstantin Khlebnikov <khlebnikov@tracto.ai>

- Add functions for working with block device statistics by major:minor
  Storage devices not always have predictable names,
  but we can easily translate filesystem path into major:minor.

  Signed-off-by: Konstantin Khlebnikov <khlebnikov@tracto.ai>

- Fetch location disk statistics by device id.
  Translate disk name or path into device id at the initialization.

  Signed-off-by: Konstantin Khlebnikov <khlebnikov@tracto.ai>

---
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* Changelog entry
Type: fix
Component: Make collection disk I/O statistics k8s compatible

<Your description.>

---
Co-authored-by: Konstantin Khlebnikov [khlebnikov@tracto.ai]

Pull Request resolved: https://github.com/ytsaurus/ytsaurus/pull/1105

Co-authored-by: yuryalekseev <yuryalekseev@yandex-team.com>
commit_hash:5dbce3d21027763dfd052c8aa078466bc0c634b7

0 files changed, 0 insertions, 0 deletions