lvm-story


lvm-story

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

    .. code-block:: bash

    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

    .. code-block:: bash

    sudo lvm pvcreate /dev/sdb sudo lvm pvcreate /dev/sdc

3.  create a volume group on the 20G and 400G physical volumes

    .. code-block:: bash

    sudo lvm vgcreate vg1 /dev/sdb sudo lvm vgcreate vg2 /dev/sdc

4.  create a logical volume on the new volume groups

    .. code-block:: bash

    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

    .. code-block:: bash

    sudo mkfs –type=ext4 /dev/mapper/vg1-app sudo mkfs –type=ext4
    /dev/mapper/vg2-data

6.  create mount points

    .. code-block:: bash

    sudo mkdir /app sudo mkdir /data

7.  configure mount points in /etc/fstab

    .. code-block:: bash

    /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

    .. code-block:: bash

    sudo mount -a

9.  verify new filesystems

    .. code-block:: bash

    df -hal