creating logical volume if does not exist

[Brad]

Relatively new to ansible.  Trying to create a logical volume on some RHEL 7 servers.  I have:

- name: make-lv
  lvol:
    vg: vg_{{ inventory_hostname_short }}
    lv: lv_ekb
    size: 100%FREE
    state: present

which works fine if the logical volume does not exist, but fails when it does.  How do I tell it not to fail if the logical volume already exists?

Thanks!

[cavamagie]

hi can you run with debug?

i use similar

- name: manage_lvm | creating new LVM logical volume(s)

lvol:

vg: "{{ item[0]['vgname'] }}"

lv: "{{ item[1]['lvname'] }}"

size: "{{ item[1]['size'] }}"

shrink: no

opts: "{{ item[1]['opts'] | default('') }}"

state: "present"

become: true

register: lvm

with_subelements:

- "{{ lvm_groups }}"

- lvnames

when: >

((item[0]['create'] is defined

and item[0]['create']) and

(item[1] is defined and

item[1] != 'None') and

(item[1]['create'] is defined and

item[1]['create']))

lvm_groups:

- vgname: root_vg

create: true

lvnames:

- lvname: root_lv

size: 16G

create: true

filesystem: ext4

mount: true

mntp: /

- lvname: tmp_lv

size: 8G

create: true

filesystem: ext4

mount: true

mntp: /tmp

- lvname: var_lv

size: 4G

create: true

filesystem: ext4

mount: true

mntp: /var

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[Brad]

I could not get code similar to yours to work.  I did get it to work with these changes:

- name: lv-test
  command: lvdisplay /dev/vg{{ inventory_hostname_short }}/lv_ekb
  register: lvdisp

-name: make-lv
  lvol:

    vg: vg_{{ inventory_hostname_short }}
    lv: lv_ekb
    size: 100%

FREE
    shrink: no
    state: present
  become: true
  when: lvdisp.rc|int != 0

this seems to be working.  Thanks so much for your help!

[cavamagie]

great! you are welcome!

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