- 准备好pv,vg;摘掉swap。
 
# swapoff -a
- 扩展swap的lv。
 
# lvextend  -l +10%free /dev/mapper/rhel-swap
# resize2fs /dev/rhel/swap
- 重新挂载swap
 
# mkswap /dev/mapper/rhel-swap 
# swapon /dev/mapper/rhel-swap 
# swapon -s
# swapoff -a
# lvextend  -l +10%free /dev/mapper/rhel-swap
# resize2fs /dev/rhel/swap
# mkswap /dev/mapper/rhel-swap 
# swapon /dev/mapper/rhel-swap 
# swapon -s