12/30/2023 0 Comments Logical volume manager xubuntuIn order to use storage devices with LVM, they must first be marked as a physical volume. Creating Physical Volumes From Raw Storage Devices This section will discuss how to create and expand physical volumes, volume groups, and logical volumes. This information is useful if you need to remove that underlying device and wish to move the data off to specific locations. LV Creation host, time lvmtest, 21:00:03 +0000Īs you can see from the output towards the bottom, the /dev/LVMVolGroup/projects logical volume is contained entirely within the /dev/sda physical volume in this example. LV UUID IN4GZm-ePJU-zAAn-DRO3-1f2w-qSN8-ahisNK To display all of the available block storage devices that LVM can potentially manage, use the lvmdiskscan command: Displaying Information about All LVM Compatible Block Storage Devices Fortunately, the LVM tool suite provides an abundant amount of tools for displaying information about every layer in the LVM stack. It is important to be able to get information about the various LVM components in your system easily. Displaying Information about Physical Volumes, Volume Groups, and Logical Volumes When you are ready, log into your server with your sudo user. To get familiar with LVM components and concepts and to test out a basic LVM configuration, follow our introduction to LVM guide prior to starting on this tutorial. You can follow our Ubuntu 18.04 initial server setup guide to create the necessary account. You will need to have a non-root user with sudo privileges configured for administrative tasks. In order to follow along, you should have access to an Ubuntu 18.04 server. We will be using an Ubuntu 18.04 server to demonstrate these operations. We will show you how to display information about volumes and potential targets, how to create and destroy volumes of various types, and how to modify existing volumes through resizing or transformation. In this guide, we will cover how to manage your storage devices with LVM. Utilizing the device mapper Linux kernel framework, the current iteration, LVM2, can be used to gather existing storage devices into groups and allocate logical units from the combined space as needed. LVM, or Logical Volume Management, is a storage device management technology that gives users the power to pool and abstract the physical layout of component storage devices for easier and flexible administration.
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