Ubuntu - Swap - Remove an LVM2 Logical Volume for Swap

The swap logical volume cannot be in use (no system locks or processes on the volume).

The easiest way to achieve this it to boot your system in rescue mode.

• Refer to for instructions on booting into rescue mode.
• When prompted to mount the file system, select Skip.

lvs

returns:

  LV       VG   Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  backup   vg01 -wi-ao----  3.72g                                                    
  home     vg01 -wi-ao---- 11.86g                                                    
  opt      vg01 -wi-ao----  1.86g                                                    
  root     vg01 -wi-ao----  3.86g                                                    
  sharewiz vg01 -wi-ao----  9.86g                                                    
  srv      vg01 -wi-ao---- 90.86g                                                    
  swap     vg01 -wi-ao----  4.00g                                                    
  usr      vg01 -wi-ao----  3.86g                                                    
  var      vg01 -wi-ao----  6.86g   

Disable swapping for the associated logical volume:

swapoff -v /dev/mapper/vg01-swap

Remove the LVM2 logical volume of size 512 MB:

lvm lvremove /dev/mapper/vg01-swap

Remove the following entry from the /etc/fstab file:

/etc/fstab

/dev/mapper/vg01-swap none swap sw 0 0

Test that the logical volume has been extended properly:

cat /proc/swaps

returns:

Filename				Type		Size	Used	Priority
/dev/dm-1                               partition	4198396	0	-1