9ed7466fd8
Reclaims the half-disk LV left by the Ubuntu Server autoinstall template default. Idempotent — no-ops cleanly when there are no free PE in the VG, and exits the play cleanly on hosts without LVM. Supports ext4 and xfs. Does not handle partition resize (cloud-utils growpart) — out of scope for the template fix-up case. Wired into day1_deploy_honcho.yml ahead of the honcho role so newly provisioned VMs get the fix-up automatically. Suitable to add to any day1 playbook by simply listing it before the application role.
71 lines
2.4 KiB
YAML
71 lines
2.4 KiB
YAML
---
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# ============================================================================
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# expand-root-lv / main
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# ----------------------------------------------------------------------------
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# 1. Confirm the target VG exists (skip role cleanly on non-LVM hosts).
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# 2. Read free physical-extent count for the VG.
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# 3. Extend the LV to +100%FREE only when free_pe > 0.
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# 4. Grow the filesystem on the mountpoint (ext4 -> resize2fs, xfs -> xfs_growfs).
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# Each step is idempotent and skips when there's nothing to do.
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# ============================================================================
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- name: Gather LVM facts
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ansible.builtin.command:
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cmd: "vgs --noheadings --nosuffix --units b -o vg_name,vg_free_count {{ expand_root_lv_vg_name }}"
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register: vg_info
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changed_when: false
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failed_when: false
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- name: Skip role when target VG is absent
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ansible.builtin.meta: end_play
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when: vg_info.rc != 0
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- name: Parse free PE count
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ansible.builtin.set_fact:
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expand_root_lv_free_pe: "{{ (vg_info.stdout.split() | last | int) if vg_info.stdout | length > 0 else 0 }}"
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- name: Extend LV to fill VG (only if free PE > 0)
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ansible.builtin.command:
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cmd: "lvextend -l +100%FREE /dev/{{ expand_root_lv_vg_name }}/{{ expand_root_lv_lv_name }}"
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register: lvextend_result
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when: expand_root_lv_free_pe | int > 0
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changed_when: lvextend_result.rc == 0
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- name: Detect filesystem type at mountpoint
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ansible.builtin.command:
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cmd: "findmnt {{ expand_root_lv_mountpoint }} -no FSTYPE"
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register: fstype_result
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changed_when: false
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- name: Set filesystem type fact
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ansible.builtin.set_fact:
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expand_root_lv_fstype: "{{ fstype_result.stdout | trim }}"
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- name: Grow ext4 filesystem
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ansible.builtin.command:
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cmd: "resize2fs /dev/{{ expand_root_lv_vg_name }}/{{ expand_root_lv_lv_name }}"
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register: resize_result
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when:
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- expand_root_lv_fstype == "ext4"
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- lvextend_result.changed | default(false)
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changed_when: resize_result.rc == 0
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- name: Grow xfs filesystem
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ansible.builtin.command:
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cmd: "xfs_growfs {{ expand_root_lv_mountpoint }}"
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register: xfs_result
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when:
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- expand_root_lv_fstype == "xfs"
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- lvextend_result.changed | default(false)
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changed_when: xfs_result.rc == 0
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- name: Report current root size
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ansible.builtin.command:
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cmd: "df -h {{ expand_root_lv_mountpoint }}"
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register: df_result
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changed_when: false
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- name: Show post-resize disk usage
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ansible.builtin.debug:
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msg: "{{ df_result.stdout_lines }}"
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