6.3. Limitations to configure the size of the devices used in LVM Storage

The limitations to configure the size of the devices that you can use to provision storage using LVM Storage are as follows:

The total storage size that you can provision is limited by the size of the underlying Logical Volume Manager (LVM) thin pool and the over-provisioning factor.
The size of the logical volume depends on the size of the Physical Extent (PE) and the Logical Extent (LE).
- You can define the size of PE and LE during the physical and logical device creation.
- The default PE and LE size is 4 MB.
- If the size of the PE is increased, the maximum size of the LVM is determined by the kernel limits and your disk space.
- The size limit for Red Hat Enterprise Linux (RHEL) 9 using the default PE and LE size is 8 EB.
- The following are the minimum storage sizes that you can request for each file system type:
  - block: 8 MiB
  - xfs: 300 MiB
  - ext4: 32 MiB