swapoff /dev/mapper/dmgroup-lvswaplvreduce -L -54.5G /dev/mapper/dmgroup-lvswapmkswap /dev/mapper/dmgroup-lvswapswapon /dev/mapper/dmgroup-lvswaplvextend -L +54G /dev/mapper/dmgroup-lvroot resize2fs -p /dev/mapper/dmgroup-lvroot
##### -54.5G是针对swap来做的和+54G是针对根目录来做的，操作系统版本centos6.7
转载于:https://www.cnblogs.com/Bingo0-python/p/9006277.html
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