I was thinking of Block Rescue Always here. Thank you for your input.
On Monday, January 25, 2021 at 11:14:47 AM UTC-6 [email protected] wrote:
> - hosts: localhost
> become: True
> gather_facts: False
> vars:
> disk: loop0
> vg_name: vgname
> lv_name: lvname
> default_lv_size: 400M
> tasks:
> - name: Collect hardware facts
> setup:
> gather_subset:
> - hardware
>
> - name: Register {{ disk }} size
> set_fact:
> secondary_disk_size: "{{
> hostvars[inventory_hostname].ansible_devices[disk].size.split(' ')[0] }}"
>
> - name: Register {{ disk }} size
> debug:
> var: "{{ secondary_disk_size }}"
>
> - name: Small secondary disk
> block:
> - name: Set lv size and warn message
> set_fact:
> lv_size: "500M"
> warn_message: "The lazy fox jumped over the brown dog"
> - name: Show warning message
> debug:
> msg: "{{ warn_message }}"
> when:
> - secondary_disk_size | int > 2
>
> - name: Create {{ lv_name }} lv
> lvol:
> vg: "{{ vg_name }}"
> lv: "{{ lv_name }}"
> size: "{{ lv_size | d (default_lv_size) }}"
> active: yes
> force: no
> state: present
> El lun, 25 ene 2021 a las 17:28, ursa Brown (<[email protected]>)
> escribió:
>
>> hmmm,, where to add the message? message to needs to show up like "hosts
>> has 30G only creating 20G" before creating the 20G lvm?
>> Thank you
>>
>> On Monday, January 25, 2021 at 9:37:49 AM UTC-6 [email protected] wrote:
>>
>>> Something like this would do the trick:
>>>
>>> In this case I'm using loop0 instead of sdb.
>>> If loop0 size is higher than 2 GB (assuming no conversion to MB, that
>>> would be great too).
>>> It will set lv_size var to 500M, and thar value will be used in lvol
>>> task otherwise it will use default lv size which is 400M.
>>>
>>> HTH
>>>
>>>
>>>
>>> - hosts: localhost
>>> become: True
>>> gather_facts: False
>>> vars:
>>> disk: loop0
>>> vg_name: vgname
>>> lv_name: lvname
>>> default_lv_size: 400M
>>> tasks:
>>> - name: Collect hardware facts
>>> setup:
>>> gather_subset:
>>> - hardware
>>>
>>> - name: Register {{ disk }} size
>>> set_fact:
>>> secondary_disk_size: hostvars[inventory_hostname].ansible_devices['{{
>>> disk }}'].size.split(' ')[0]
>>>
>>> - name: Set lv size
>>> set_fact:
>>> lv_size: "500M"
>>> when:
>>> - secondary_disk_size | int > 2
>>>
>>> - name: Create {{ lv_name }} lv
>>> lvol:
>>> vg: "{{ vg_name }}"
>>> lv: "{{ lv_name }}"
>>> size: "{{ lv_size | d (default_lv_size) }}"
>>> active: yes
>>> force: no
>>> state: present
>>>
>>>
>>> El lun, 25 ene 2021 a las 15:41, ursa Brown (<[email protected]>)
>>> escribió:
>>>
>>>> Can you please show me how to do that? will this show an error? before
>>>> creating the LVM?
>>>>
>>>> On Monday, January 25, 2021 at 8:38:24 AM UTC-6 [email protected]
>>>> wrote:
>>>>
>>>>> You can fetch secondary disk size and set the lvm size depending on
>>>>> it.
>>>>> This is what I would do in your case:
>>>>>
>>>>> - Set default lvm size to a safe value that you know all your
>>>>> hosts will meet. ie : 20G
>>>>> - Fetch secondary disk size. If it's 50G or higher overwrite
>>>>> default lvm size to 40G
>>>>>
>>>>> Regards
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> El lun, 25 ene 2021 a las 15:27, ursa Brown (<[email protected]>)
>>>>> escribió:
>>>>>
>>>>>> I have hosts that has 50G and 30G of SDB or disk2..
>>>>>> My playbook only works if hosts has SDB is 50G, then it has no
>>>>>> problem creating the 40G.
>>>>>>
>>>>>> But it throwing errros because some hosts has 30G of SDB.
>>>>>>
>>>>>> I want my playbook to still run, if the SB has only 30G then it will
>>>>>> say, not enough disk, then will create a 20G.
>>>>>> If the hosts has 50G, it will create the 40G lvm.
>>>>>>
>>>>>> Thank you
>>>>>>
>>>>>> On Monday, January 25, 2021 at 8:22:31 AM UTC-6 Antony Stone wrote:
>>>>>>
>>>>>>> On Monday 25 January 2021 at 15:15:56, ursa Brown wrote:
>>>>>>>
>>>>>>> > I got 2 hosts,
>>>>>>> > one has 50G and the other one has 30G.
>>>>>>> > I have no problem creating a 40G LVM on the hosts that has 50G.
>>>>>>> But how can
>>>>>>> > I make my ansible script if the hosts has 30G. It will say not
>>>>>>> enough space
>>>>>>> > then create 20G of lvm instead.
>>>>>>>
>>>>>>> Are you saying that you expect Ansible to create a 40Gb Logical
>>>>>>> Volume on a
>>>>>>> machine which has only 30Gb capacity?
>>>>>>>
>>>>>>> If not, please explain with a little more detail what you are trying
>>>>>>> to get
>>>>>>> Ansible to do.
>>>>>>>
>>>>>>>
>>>>>>> Regards,
>>>>>>>
>>>>>>>
>>>>>>> Antony.
>>>>>>>
>>>>>>> --
>>>>>>> René Descartes walks in to a bar.
>>>>>>> The barman asks him "Do you want a drink?"
>>>>>>> Descartes says "I think not," and disappears.
>>>>>>>
>>>>>>> Please reply to the list;
>>>>>>> please *don't* CC me.
>>>>>>>
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>>>>>> .
>>>>>>
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