Wiki

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
====== 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**.

----

===== Determine the name of the swap logical volume =====

<code bash>
lvs
</code>

returns:

<code bash>
  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   
</code>  

----

===== Remove a swap volume group =====

Disable swapping for the associated logical volume: 

<code bash>
swapoff -v /dev/mapper/vg01-swap
</code>

----

Remove the LVM2 logical volume of size 512 MB: 

<code bash>
lvm lvremove /dev/mapper/vg01-swap
</code>

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

<file bash /etc/fstab>
/dev/mapper/vg01-swap none swap sw 0 0
</file>

Test that the logical volume has been extended properly:  

<code bash>
cat /proc/swaps
</code>

returns:

<code bash>
Filename				Type		Size	Used	Priority
/dev/dm-1                               partition	4198396	0	-1
</code>