12884dd121
This can be necessary when there are existing partition tables or LVM headers e.g. from a previous installation.
61 lines
2.0 KiB
YAML
61 lines
2.0 KiB
YAML
---
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# Warning! These tasks can result in lost data. Take care when developing and
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# using them.
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# Initialisation tasks to be applied on first boot of a system to initalise
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# disks. We search for block devices that are not currently mounted, then wipe
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# any LVM or file system state from them.
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- name: Ensure LVM2 is installed
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yum:
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name: lvm2
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state: present
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become: True
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- name: Check for unmounted block devices
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shell: >
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lsblk -i -o NAME,MOUNTPOINT | awk \
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'/^ *[|`]-/ && NF > 1 { mounts[master_dev] = mounts[master_dev] $2 " " }
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/^sd/ && NF == 1 { master_dev = $1; mounts[master_dev] = "" }
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END { for (dev in mounts) if (mounts[dev] == "") print dev }'
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register: unmounted_devices
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changed_when: False
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- name: Ensure that all unmounted block devices have LVM state removed
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shell: |
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set -e
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if pvs /dev/{{ item }} >/dev/null 2>&1
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then
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echo "Found PV on /dev/{{ item }}"
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vg=$(pvs --noheadings -o vg_name /dev/{{ item }})
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if [[ -n $vg ]] && [[ $vg != " " ]]
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then
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echo "Found VG $vg on PV /dev/{{ item }}"
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lvs --noheadings -o lv_name $vg | while read lv
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do
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if [[ -n $lv ]] && [[ $lv != " " ]]
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then
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echo "Found LV $lv on VG $vg. Removing"
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lvremove -yf ${vg}/${lv}
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fi
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done
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vgremove -f $vg
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fi
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pvremove -yff /dev/{{ item }}
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fi
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with_items: "{{ unmounted_devices.stdout_lines }}"
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become: True
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- name: Ensure that all unmounted block devices have filesystems wiped
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command: "wipefs -f /dev/{{ item }}"
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with_items: "{{ unmounted_devices.stdout_lines }}"
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become: True
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# The command can fail in some cases which are valid, so ignore the
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# result.
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failed_when: False
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- name: Ensure that all unmounted block device headers are zeroed
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command: "dd if=/dev/zero of=/dev/{{ item }} bs=1M count=100"
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with_items: "{{ unmounted_devices.stdout_lines }}"
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become: True
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