Knowledgebase

How to Create a LVM2 Logical Volume for Swap (CentOS 5)

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:
```
# lvm 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 -va
```
Test that the logical volume has been extended properly:
```
# cat /proc/swaps # free
```

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