disk-init

This role adds complete disks in to LVM Groups. It is aimed to be idempotent and just adds new disks. It currently does not remove disks from a diskgroup nor cleans up disks that do have a valid LVM signature on the disk (created by pvcreate)

Requirements

It is tested on RHEL EL7, but should work on Centos 6,7, EL7 and Fedora. The system must be properly subscribed to install the required packages for diskmanagement (gdisk, sg3_utils, lvm2)

Role Variables

To define the disk setup of s system the follwowing variables need to be set in your playbook:

disks:
  <devicepath1> : <volumegroup>
  <devicepath2> : <volumegroup>
  ...

logvols:
   <logical_volume_name1>:
         size: <size>
         vol: <volumegroup>
         mountpoint: <mountpoint>
         pvs: <devicepath> (optional, if you want to place vol explicitly)
         fstype: xfs (optional, defaults to xfs)
         opts: -b 4096 (optional paramters for mounting)
    <logical_volume_name2>:
         size: <size>
         vol: <volumegroup>
         mountpoint: <mountpoint>
         pvs: <devicepath> (optional, if you want to place vol explicitly)
         fstype: xfs (optional, defaults to xfs)
         opts: -b 4096 (optional paramters for mounting)
    ....

Example Playbook

Here is an example playbook that adds two disks in volumegroup vg00 and adds another one to the existing root volumegroup

- hosts: servers
  remote_user: root

  vars:
      disks:
              /dev/vdc: vg00
              /dev/vdb: vg00
              /dev/vdd: root_vg

      logvols:
              hana_shared:
                      size: 24G
                      vol: vg00
                      mountpoint: /hana/shared
              hana_data:
                      size: 24G
                      vol: vg00
                      mountpoint: /hana/data
              hana_logs:
                      size: 12G
                      vol: vg00
                      mountpoint: /hana/logs
                      pvs: /dev/vdc
              usr_sap:
                      size: 49G
                      vol: vg00
                      mountpoint: /usr/sap
                      fstyp: xfs
                      opts: -b4096
              install:
                      size: 100G
                      vol: root_vg
                      mountpoint: /install
                      fstyp: ext4

  roles:
     - { role: mk-ansible-roles.disk-init }