Forked from keithchambers/gist:80b60559ad83cebf1672
Created
September 6, 2017 23:25
-
-
Save hermes-pimentel/7d8a542e50d2d455c1d3c5b58f9ec2f8 to your computer and use it in GitHub Desktop.
Ansible role to set 'noop' i/o scheduler (CentOS 7)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| --- | |
| - name: test if grub configured for noop i/o scheduler | |
| command: egrep -q 'elevator=noop' /boot/grub2/grub.cfg | |
| register: grub | |
| changed_when: no | |
| failed_when: grub_test.rc == 2 | |
| - name: configure grub for noop i/o scheduler | |
| sudo: yes | |
| command: grubby --update-kernel=ALL --args=elevator=noop | |
| when: grub_test.rc == 1 | |
| - name: get list of block devices to test | |
| shell: ls /sys/block/ | egrep '^([shv]|xv])d[a-z]$' | |
| register: block_devs | |
| changed_when: no | |
| - name: test if block device using noop i/o scheduler | |
| shell: cat /sys/block/{{ item }}/queue/scheduler | egrep -q '\[noop\]' | |
| with_items: block_devs.stdout | |
| register: noop_test | |
| changed_when: noop_test.rc == 1 | |
| failed_when: noop_test.rc == 2 | |
| - name: set block device to use noop i/o scheduler | |
| sudo: yes | |
| shell: echo noop > /sys/block/{{ item }}/queue/scheduler | |
| with_items: block_devs.stdout | |
| when: noop_test.changed |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment