ceph_prepare_installation: auto-create LVM when ceph_osd_disk is defined#916
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Signed-off-by: Mathieu Dupré <mathieu.dupre@savoirfairelinux.com>
When only ceph_osd_disk is provided (no lvm_volumes), the role now automatically creates a single LVM volume group "vg_ceph" and logical volume "lv_ceph" using the full disk. This is needed for the cephadm playbook which expects this exact VG/LV naming. - Add ceph_prepare_installation_flush_osds variable (default false) to force re-creation even if the LVM already exists. - Check that the disk exists before attempting to create partitions. - Zap the disk using the appropriate ceph-volume command (cephadm ceph-volume or ceph-volume depending on deployment mode). - Create a single GPT partition with the lvm flag, then vg_ceph/lv_ceph. - Restrict the legacy lvm_volumes creation path to only run when lvm_volumes is actually defined. - Update README to document the new automatic LVM creation behavior and the flush_osds variable. - Remove the ceph-volume dependency when we use cephadm. Signed-off-by: Mathieu Dupré <mathieu.dupre@savoirfairelinux.com>
insatomcat
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May 7, 2026
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When only ceph_osd_disk is provided (no lvm_volumes), the role now automatically creates a single LVM volume group "vg_ceph" and logical volume "lv_ceph" using the full disk. This is needed for the cephadm playbook which expects this exact VG/LV naming.