Remove Unused Logical Volume(lvm) from Linux

1. Un-mount the desired lvm mount point:

[root@hostname ~]# umount /mount_point

i.e.

[root@hostname ~]# umount /u02

Here /u02 is the unwanted mount point that will no longer be needed in my case.

2. Remove the mount point entry from /etc/fstab file:

[root@hostname ~]# vim /etc/fstab

UUID=bbc37d9d-f553-486b-81e9-c2cae03e434a /u02 xfs defaults 0 0

In my case, I need to remove the above line.

3. Remove the associated Logical volume:

3.1. See the list of Logical volume,

[root@hostname ~]# lvdisplay

or

[root@hostname ~]# lvs

3.2. Now, remove the right Logical volume,

[root@hostname ~]# lvremove /dev/vg_name/lv_name

i.e.

[root@hostname ~]# lvremove /dev/vg_u02/lv_u02

4. Now, remove the associated Volume group:

4.1. See the list of Volume group,

[root@hostname ~]# vgdisplay

or

[root@hostname ~]# vgs

4.2 Now, remove the right Volume group,

[root@hostname ~]# vgremove vg_name

i.e.

[root@hostname ~]# vgremove vg_u02

5. Now, remove the associated Physical volume:

5.1. See the list of Physical volume,

[root@hostname ~]# pvdisplay

or

[root@hostname ~]# pvs

5.2 Now, remove the right Physical volume,

You must verify that your Physical volume does not assign to any Volume group before performing this step.

[root@hostname ~]# pvremove /dev/disk_partition_name

i.e.

[root@hostname ~]# pvremove /dev/sdc1

6. Now remove the associated disk if possible or format it again to reuse this disk.