Removing An Lvm2 Logical Volume For Swap; Removing A Swap File - Red Hat ENTERPRISE LINUX 4 System Administration Manual

Chapter 11. Swap Space
3. Format the new swap space:
# mkswap /dev/VolGroup00/LogVol01
4. Enable the extended logical volume:
# swapon -va
5. Test that the logical volume has been reduced properly:
# cat /proc/swaps # free

11.3.2. Removing 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.
To remove a swap volume group (assuming /dev/VolGroup00/LogVol02 is the swap volume you
want to remove):
1. Disable swapping for the associated logical volume:
# swapoff -v /dev/VolGroup00/LogVol02
2. Remove the LVM2 logical volume of size 512 MB:
# lvm lvremove /dev/VolGroup00/LogVol02
3. Remove the following entry from the /etc/fstab file:
/dev/VolGroup00/LogVol02 swap swap defaults 0 0
4. Test that the logical volume has been extended properly:
# cat /proc/swaps # free

11.3.3. Removing a Swap File

To remove a swap file:
1. At a shell prompt as root, execute the following command to disable the swap file (where /
swapfile is the swap file):
# swapoff -v /swapfile
2. Remove its entry from the /etc/fstab file.
3. Remove the actual file:
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Chapter 5, Basic System Recovery