System hang with stalled I/O when using the bfq I/O scheduler

Solution Unverified - Updated -

Issue

  • System hang with stalled I/O when using the bfq I/O scheduler:
ffff8da945d86610 sdi      is queued, deadline: -848.219 (30)  rq_alloc: -878.220
ffff8da8c3a0d050 sdah     is queued, deadline: -608.097 (30)  rq_alloc: -638.098
ffff8daa74d30890 sdah     is queued, deadline: -8190457.066 (0)   rq_alloc: -537.482
ffff8daa74d30cd0 sdah     is queued, deadline: -8190457.066 (0)   rq_alloc: -537.482
ffff8daa74d31110 sdah     is queued, deadline: -8190457.066 (0)   rq_alloc: -537.482

Environment

  • Red Hat Enterprise Linux 8
  • bfq I/O scheduler

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