Linux Rhel - Find Disk Type

How to show the disk usage of each subdirectory in Linux?

Use asterisk to get info for each directory, like this:

sudo du -hs *

It will output something like the below:

0       backup
0       bin
70M     boot
0       cfg
8.0K    data
0       dev
140K    docs

calculate total used disk space by files older than 180 days using find

@PeterT is right. Almost all these answers invoke a command (du) for each file, which is very resource intensive and slow and unnecessary. The simplest and fastest way is this:

find . -type f -mtime +356 -printf '%s\n' | awk '{total=total+$1}END{print total/1024}'

How to gather facts about disks using Ansible

This information is automatically gathered via ansible's fact gathering mechanism.

See Variables discovered from systems: Facts.

For example:

#!/usr/bin/env ansible-playbook
- name: Lets look at some disks
  hosts: localhost
  become: false
  gather_facts: true
  tasks:
  - name: Output disk information
    debug:
      var: hostvars[inventory_hostname].ansible_devices

If we instead use the gather_subset configuration on the setup module instead we can speed up the fact gathering and only gather information about system hardware.

We can then combine this with the python keys() method and the jinja2 list filter to produce your desired output.

#!/usr/bin/env ansible-playbook
- name: Lets look at some disks
  hosts: localhost
  become: false
  gather_facts: false
  tasks:
  - name: Collect only facts about hardware
    setup:
      gather_subset:
      - hardware

  - name: Output disks
    debug:
      var: hostvars[inventory_hostname].ansible_devices.keys() | list

It is also possible to configure which facts to gather in the ansible configuration file ansible.cfg using the gather_subset key in the [defaults] section.

EDIT:
If you wanted to filter out various disk types the easiest way would be to use map('regex_search', '*search string*') to extract the values you want. You can the remove the nulls via select('string').

For example with disks of the form sd*:

#!/usr/bin/env ansible-playbook
- name: Lets look at some disks
  hosts: localhost
  become: false
  gather_facts: false
  tasks:
  - name: Collect only facts about hardware
    setup:
      gather_subset:
      - hardware

  - name: Output disks
    debug:
      var: hostvars[inventory_hostname].ansible_devices.keys() | map('regex_search', 'sd.*') | select('string') | list

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