红帽全球峰会3.9. 更改 LVM-VDO 卷上的压缩设置
默认情况下，启用了 VDO 池逻辑卷(LV)的压缩。要保存 CPU 使用情况，您可以禁用它。使用 lvchange 命令启用或禁用压缩。
先决条件
- 您的系统中有 LVM-VDO 卷。
流程
检查逻辑卷的压缩状态：
# lvs -o+vdo_compression,vdo_compression_state LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert VDOCompression VDOCompressionState vdo_name vg_name vwi-a-v--- 1.00t vpool0 0.00 enabled online vpool0 vg_name dwi------- <15.00g 20.03 enabled online禁用 VDOPoolLV 的压缩：
# lvchange --compression n vg-name/vdopoolname如果要启用压缩，请使用
y选项，而不是n选项。
验证
查看压缩的当前状态：
# lvs -o+vdo_compression,vdo_compression_state LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert VDOCompression VDOCompressionState vdo_name vg_name vwi-a-v--- 1.00t vpool0 0.00 offline vpool0 vg_name dwi------- <15.00g 20.03 offline
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