The disk plugin of tuned is unable to identify nvme devices

Solution Verified - Updated -

Issue

  • The disk plugin of tuned is unable to identify nvme devices
  • Tuned's disk plugin is unable to set scheduler or read_ahead_kb values for nvme devices.
2021-07-12 21:35:38,474 ERROR    tuned.plugins.base: verify: failed: device dm-2: 'elevator' = 'none', expected 'kyber'
2021-07-12 21:35:38,475 ERROR    tuned.plugins.base: verify: failed: device dm-0: 'elevator' = 'none', expected 'kyber'
2021-07-12 21:35:38,476 ERROR    tuned.plugins.base: verify: failed: device dm-1: 'elevator' = 'none', expected 'kyber'
  • Tuned is unable to nvme device under disk plugin
2021-07-12 21:43:40,237 WARNING  tuned.plugins.base: instance disk: no matching devices available

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • systems with nvme drives.

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