What is the correct order of tasks for creating an LVM for the first time?

• A. Create the physical volume (pvcreate), create the volume group (vgcreate), create the logical volume (lvcreate)
• B. Create the volume group (vgcreate), create the physical volume (pvcreate), create the logical volume (lvcreate)
• C. Create the logical volume (lvcreate), create the physical volume (pvcreate), create the volume group (vgcreate)
• D. Create the physical volume (pvcreate), create the logical volume (lvcreate), create the volume group (vgcreate)

Answer: (A)

In LVM, you start by turning the physical storage into a physical volume with pvcreate. This initializes the disk or partition so LVM can use it. Next, you group one or more physical volumes into a volume group with vgcreate; the volume group is the container that holds the space from its PVs. Finally, you create a logical volume with lvcreate inside that volume group, which gives you an LV you can format and mount. The LV depends on the VG existing, which in turn depends on the PV being prepared first. So the sequence PV -> VG -> LV is the correct flow for the first-time LVM setup.