红帽全球峰会13.6. 在 LVM2 逻辑卷中扩展 swap
您可以在现有 LVM2 逻辑卷上扩展 swap 空间。假设 /dev/VolGroup00/LogVol02 是您要扩展为 2 GB 的卷。
先决条件
- 您有足够的磁盘空间。
流程
为关联的逻辑卷禁用交换：
swapoff -v /dev/VolGroup00/LogVol02
# swapoff -v /dev/VolGroup00/LogVol02Copy to Clipboard Copied! Toggle word wrap Toggle overflow 将 LVM2 逻辑卷调整为 2 GB ：
lvresize -L +2G /dev/VolGroup00/LogVol02
# lvresize -L +2G /dev/VolGroup00/LogVol02Copy to Clipboard Copied! Toggle word wrap Toggle overflow 格式化新 swap 空间：
mkswap /dev/VolGroup00/LogVol02
# mkswap /dev/VolGroup00/LogVol02Copy to Clipboard Copied! Toggle word wrap Toggle overflow 启用扩展的逻辑卷：
swapon -v /dev/VolGroup00/LogVol02
# swapon -v /dev/VolGroup00/LogVol02Copy to Clipboard Copied! Toggle word wrap Toggle overflow
验证
要测试是否成功扩展并激活 swap 逻辑卷，请检查活跃 swap 空间：
cat /proc/swaps Filename Type Size Used Priority /dev/dm-6 partition 6291452 0 -2
# cat /proc/swaps Filename Type Size Used Priority /dev/dm-6 partition 6291452 0 -2Copy to Clipboard Copied! Toggle word wrap Toggle overflow free -h
# free -h total used free shared buff/cache available Mem: 30Gi 1.2Gi 28Gi 12Mi 994Mi 28Gi Swap: 6.0Gi 0B 6.0GiCopy to Clipboard Copied! Toggle word wrap Toggle overflow
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