PROBE::IOSCHEDULER_T(3stap) IO Scheduler and block IO Taps PROBE::IOSCHEDULER_T(3stap)

probe::ioscheduler_trace.elv_requeue_request - Fires when a request is

ioscheduler_trace.elv_requeue_request

rq_flags

Request flags.

disk_major

Disk major no of request.

disk_minor

Disk minor number of request.

rq

Address of request.

name

Name of the probe point

elevator_name

The type of I/O elevator currently enabled.

put back on the queue, when the hadware cannot accept more requests.

tapset::ioscheduler(3stap)

November 2023 SystemTap Tapset Reference