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once upon a time we randomly needed to add two new separate lvm logical volumes to a server

  1. verify which devices we will work with

    sudo disk -l

    We need to create physical volumes on both of these buggers:

    • /dev/sdb
    • /dev/sdc
  2. create a physical volume on the 20G and 400G LUNs

    sudo lvm pvcreate /dev/sdb
    sudo lvm pvcreate /dev/sdc
  3. create a volume group on the 20G and 400G physical volumes

    sudo lvm vgcreate vg1 /dev/sdb
    sudo lvm vgcreate vg2 /dev/sdc
  4. create a logical volume on the new volume groups

    sudo lvm lvcreate vg1 -l 100%VG --name app
    sudo lvm lvcreate vg2 -l 100%VG --name data
  5. format each logical volume with ext4 filesystem

    sudo mkfs --type=ext4 /dev/mapper/vg1-app
    sudo mkfs --type=ext4 /dev/mapper/vg2-data
  6. create mount points

    sudo mkdir /app
    sudo mkdir /data
  7. configure mount points in /etc/fstab

    /dev/mapper/vg1-app /app               ext4    errors=remount-ro 0       1
    /dev/mapper/vg2-data /data             ext4    errors=remount-ro 0       1
  8. verify fstab

    sudo mount -a
  9. verify new filesystems

    df -hal


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