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MAAS supports multiple storage layouts, including options for non-UEFI-compatible systems.
Flat layout
The Flat layout means one partition takes up the whole boot disk, formatted with ext4 and mounted at the root (/).
| Name | Size | Type | Filesystem | Mount point |
|---|---|---|---|---|
| sda | - | disk | - | - |
| sda1 | 512 MB | part | FAT32 | /boot/efi |
| sda2 | rest of sda | part | ext4 | / |
Options:
- boot_size: Sets the size of the boot partition. Default is zero, putting
/booton the root filesystem. - root_device: The block device for the root partition. Usually the boot disk.
- root_size: Root partition size, 100% by default.
LVM layout
LVM (Logical Volume Management) offers flexibility. A volume group vgroot covers a partition on the boot disk, wrapping logical volume lvroot.
| Name | Size | Type | Filesystem | Mount point |
|---|---|---|---|---|
| sda | - | disk | - | - |
| sda1 | 512 MB | part | FAT32 | /boot/efi |
| sda2 | rest of sda | part | lvm-pv(vgroot) | - |
| lvroot | rest of sda | lvm | ext4 | / |
Options:
- vg_name: Customise volume group’s name.
- lv_name: Personalise logical volume’s name.
- lv_size: Set the size, defaulting to the entire volume group.
bcache layout
For better disk performance, the bcache layout uses the boot disk as the backing device and an SSD as the cache.
| Name | Size | Type | Filesystem | Mount point |
|---|---|---|---|---|
| sda | - | disk | - | - |
| sda1 | 512 MB | part | FAT32 | /boot/efi |
| sda2 | rest of sda | part | bc-backing | - |
| sdb(ssd) | - | disk | - | - |
| sdb1 | 100% of sdb | part | bc-cache | - |
| bcache0 | per sda2 | disk | ext4 | / |
Options:
- cache_device: Opt for cache device, defaulting to the smallest SSD.
- cache_mode: Adjust the cache mode;
writethroughis standard. - cache_size: Define cache partition size.
- cache_no_part: Decide on partition creation for the cache device.
VMFS6 layout
For VMware ESXi deployments, VMFS6 is the required layout, automating both OS and datastore configurations.
| Name | Size | Type | Use |
|---|---|---|---|
| sda | - | disk | - |
| sda1 | 3 MB | part | EFI |
| sda2 | 4 GB | part | Basic Data |
| sda3 | Remaining | part | VMFS Datastore 1 |
Options:
- root_size: Sets the default VMFS Datastore size, generally the remaining disk space.
Blank layout
The Blank layout clears all, making way for custom configurations. It leaves the system un-deployable until you manually configure storage.
Machines with this layout need manual storage configuration before deployment.
Last updated 8 months ago.