centos lvm 扩容swap

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/fstabfile:

/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

原文 https://www.centos.org/docs/5/html/5.1/Deployment_Guide/s2-swap-extending-lvm2.html