It is used to group separate block devices (partitions) together into Volume Groups (VGs), and then chop those VGs up into logical block devices, or Logical Volumes (LVs). LVM is an abstraction framework which exists between your physical (or virtual) disks and your Linux file system (which is likely ext4). If you followed the default settings in the Ubuntu installation, then the storage for your Linux OS is probably using the Logical Volume Manager (LVM). Note: In my examples, I’m using an “all-defaults” setup of Ubuntu 20.04 Server with a single 100GB disk. Linux is not your bread-and-butter, you usually deal in Windows, and you just need to get this done. You originally spun up a VM, installed a recent Ubuntu OS, and just hit Next, Next, Finish through the guided install. POV: You’re a sysadmin who set up a one-off Linux machine for an app you needed, and now it’s out of disk space.
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