RHEL 6 Storage Admin - 14.2.2. Creating an LVM2 Logical Volume for Swap

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To add a swap volume group (assuming /dev/VolGroup00/LogVol02 is the swap volume you want to add):

Create the LVM2 logical volume of size 256 MB:

lvcreate VolGroup00 -n LogVol02 -L 256M
Format the new swap space:

mkswap /dev/VolGroup00/LogVol02
Add the following entry to the /etc/fstab file:

/dev/VolGroup00/LogVol02 swap swap defaults 0 0
Enable the extended logical volume:

swapon -v /dev/VolGroup00/LogVol02

To test if the logical volume was successfully created, use cat /proc/swaps or free to inspect the swap space.