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