Configure LVM's devices file

roles/edpm_bootstrap/defaults/main.yml

@@ -94,3 +94,10 @@ edpm_bootstrap_fips_fms_status:
   - {exit_code: 0, state: 'enabled', message: 'FIPS is enabled'}
   - {exit_code: 1, state: 'inconsistent', message: 'FIPS setup is inconsistent'}
   - {exit_code: 2, state: 'disabled', message: 'FIPS is disabled'}
+
+# Full path name of LVM's default "devicesfile" (see /etc/lvm/lvm.conf)
+edpm_bootstrap_lvm_devices_file: /etc/lvm/devices/system.devices
+
+# Specifies whether to import existing LVM devices into the devices file. This
+# is overridden (set false) when updating nova compute nodes.
+edpm_bootstrap_lvm_import_devices: true

roles/edpm_bootstrap/meta/argument_specs.yml

@@ -112,3 +112,16 @@ argument_specs:
         default: /var/lib/openstack/reboot_required
         description: |
           Path of the reboot_required folder used by `edpm_reboot` role
+
+      edpm_bootstrap_lvm_devices_file:
+        type: path
+        default: /etc/lvm/devices/system.devices
+        description: |
+          Full path name of LVM's default "devicesfile" (see /etc/lvm/lvm.conf)
+
+      edpm_bootstrap_lvm_import_devices:
+        type: bool
+        default: true
+        description: |
+          Specifies whether to import existing LVM devices into the devices file.
+          This is overridden (set false) when updating nova compute nodes.

roles/edpm_bootstrap/molecule/default/verify.yml

@@ -9,3 +9,9 @@
         path: /tmp/edpm_bootstrap_command
       register: bootstrap_stat
       failed_when: not bootstrap_stat.stat.exists
+
+    - name: Verify the LVM devices file exists
+      stat:
+        path: "{{ edpm_bootstrap_lvm_devices_file }}"
+      register: lvm_devices_stat
+      failed_when: not lvm_devices_stat.stat.exists

roles/edpm_bootstrap/tasks/bootstrap.yml

@@ -108,3 +108,6 @@
 - name: FIPS tasks
   ansible.builtin.import_tasks: fips.yml
   when: edpm_bootstrap_fips_mode != 'check'
+
+- name: LVM tasks
+  ansible.builtin.import_tasks: lvm.yml

roles/edpm_bootstrap/tasks/lvm.yml

@@ -0,0 +1,41 @@
+---
+# Copyright 2025 Red Hat, Inc.
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+- name: Check if the LVM devices file exists
+  become: true
+  ansible.builtin.stat:
+    path: "{{ edpm_bootstrap_lvm_devices_file }}"
+  register: lvm_devices_file
+
+- name: Create the LVM devices file
+  become: true
+  when: not (lvm_devices_file.stat.exists | bool)
+  block:
+    - name: Import any existing LVM devices
+      ansible.builtin.command: /usr/sbin/vgimportdevices --all
+      register: vgimportdevices
+      changed_when: true
+      failed_when: vgimportdevices.rc not in [0, 5]
+      when: (edpm_bootstrap_lvm_import_devices | bool)
+
+    - name: Create an empty LVM devices file
+      ansible.builtin.file:
+        path: "{{ edpm_bootstrap_lvm_devices_file }}"
+        state: touch
+        mode: '0600'
+        owner: root
+        group: root
+      when: not (edpm_bootstrap_lvm_import_devices | bool) or vgimportdevices.rc == 5

roles/edpm_nova/tasks/update.yml

@@ -10,3 +10,15 @@
     mode: "0644"
   loop:
     - {"src": "nova_statedir_ownership.py", "dest": "nova_statedir_ownership.py"}
+
+- name: Run LVM bootstrap tasks
+  tags:
+    - update
+    - nova
+  ansible.builtin.include_role:
+    name: osp.edpm.edpm_bootstrap
+    tasks_from: lvm.yml
+  vars:
+    # Don't import existing LVM devices in case there are "rogue" ones associated
+    # with an attached cinder volume.
+    edpm_bootstrap_lvm_import_devices: false