How to add an extra second hard drive on Linux LVM and increase the size of storage

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Here is a high-level overview of the steps to add an extra hard drive and increase the size of storage on Linux LVM:

  1. Prepare the new hard drive: Connect the new hard drive to your Linux system and use fdisk to create a new partition on the drive.
  2. Create a physical volume: Use the pvcreate command to create a physical volume on the new partition.
  3. Extend the volume group: Use the vgextend command to add the new physical volume to an existing volume group.
  4. Extend a logical volume: Use the lvextend command to increase the size of a logical volume within the volume group.
  5. Resize the file system: Use the resize2fs command to resize the file system to take advantage of the increased size of the logical volume.

Here is a more detailed explanation of each step:

  1. Prepare the new hard drive:
sudo fdisk /dev/sdb
  • Press n to create a new partition
  • Press p for primary partition
  • Press 1 for the first partition
  • Press Enter to select the default first and last sectors
  • Press w to write the changes and exit fdisk
  1. Create a physical volume:
sudo pvcreate /dev/sdb1
  1. Extend the volume group:
sudo vgextend vg_name /dev/sdb1

where vg_name is the name of the existing volume group.

  1. Extend a logical volume:
sudo lvextend -L +size /dev/vg_name/lv_name

where size is the size to increase the logical volume by and lv_name is the name of the logical volume to be extended.

  1. Resize the file system:
sudo resize2fs /dev/vg_name/lv_name

This will resize the file system to match the new size of the logical volume.

Note: These commands assume that the new hard drive is /dev/sdb and the existing volume group is named vg_name. You should adjust these commands as necessary based on your system configuration. Additionally, it is recommended to back up important data before performing these steps.

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