# Partitioning

## Resize System Volumes

The size of the system volumes (inside volume group `vgroot`), are automatically set on a rather small size at the initial installation.

Note that due to the limitations of XFS a volume can only be increased, not be shrunk.

### Get Available Space and Volume Sizes

To check how much space is still available, use `pvs` and look for the volume group `vgroot`:
```
[root@lxdev00 ~]# pvs
  PV         VG      Fmt  Attr PSize   PFree 
  /dev/sda2  vg_root lvm2 a--  <62.94g <5.19g
[root@lxdev00 ~]# 
```

Then `lvs` gives the sizes of the volumes inside:
```
[root@lxdev00 ~]# lvs
  LV         VG      Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  lv_home    vg_root -wi-ao---- <31.44g                                                    
  lv_openafs vg_root -wi-ao----   2.00g                                                    
  lv_root    vg_root -wi-ao----  12.31g                                                    
  lv_tmp     vg_root -wi-ao----   2.00g                                                    
  lv_var     vg_root -wi-ao----   8.00g                                                    
  lv_var_log vg_root -wi-ao----   2.00g                                                    
[root@lxdev00 ~]# 
```

### Extend System Volume

This can be done in Hiera with the `vgroot::path` key where for each volume which should be increased a new minium size can be set:

```
vgroot::path:
    lv_root: 15GB
    lv_var_log: 3GB

```

This is then applied on the next puppet run, you may trigger one as `root`:

```
puppet agent -t
```

## Custom Partitioning

To add a new volume to the system disk, you need to address the [lvm Puppet module](https://forge.puppet.com/modules/puppetlabs/lvm) directly in Hiera::

```yaml
lvm::volume_groups:
  vg_root:
    physical_volumes:
      - /dev/nvme0n1p3
    logical_volumes:
      lv_data:
        size: 3TB
        fs_type: 'xfs'
        mountpath: '/mnt/data'
        size_is_minsize: true
```

Please note that you need also to list the partition on which `vg_root` is located.

The same you can do to add partitions outside of the system disk, but here you need to define the full LVM volume group:

```yaml
lvm::volume_groups:
  vg_data:
    physical_volumes:
      - '/dev/sdb'
    logical_volumes:
      lv_usr_local:
        mountpath: '/usr/local'
        fs_type: 'xfs'
```