RHEL-8 deadline scheduler

[dusharu]

Hi,
I try your class on RHEL-8 and get a problem - puppet applies scheduler on every run.

Puppet-code:
disk::scheduler { 'sda': scheduler => 'deadline' }

Puppet-run:

# run-1
puppet agent -t
...
Notice: /Stage[main]/Test/Disk::Scheduler[sda]/Exec[disk_scheduler_for_sda]/returns: executed successfully (corrective)

# run-2
puppet agent -t
...
Notice: /Stage[main]/Test/Disk::Scheduler[sda]/Exec[disk_scheduler_for_sda]/returns: executed successfully (corrective)

I think it's linked with the scheduler name on RHEL:

#### you need old key-world for switch on the scheduler
# FAIL
echo deadline-mq > /sys/block/sda/queue/scheduler
bash: echo: write error: Invalid argument
# OK
 echo deadline > /sys/block/sda/queue/scheduler

#### but you needs new key-world for check the scheduler
cat  /sys/block/sda/queue/scheduler
[mq-deadline] kyber bfq none