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