红帽全球峰会第 4 章 在 LVM-VDO 卷中修剪选项
以下是用于 LVM-VDO 卷的不同的可用修剪选项：
discard-
执行在线块丢弃操作来自动丢弃未使用的块。要立即丢弃，请使用
mount -o discard命令。 fstrim- 执行定期丢弃。管理员需要调度和监控额外的进程。
注意
目前建议使用 fstrim 应用程序丢弃未使用的块，而不是使用 discard 挂载选项，因为此选项的性能影响可能非常严重。因此，nodiscard 是默认值。
4.1. 在 LVM-VDO 卷上启用 discard 挂载选项
复制链接链接已复制到粘贴板!
您可以在 LVM-VDO 卷中启用 discard 选项。
先决条件
- 您的系统中有 LVM-VDO 卷。
流程
在卷上启用
discard选项：mount -o discard /dev/vg-name/vdo-name mount-point
# mount -o discard /dev/vg-name/vdo-name mount-pointCopy to Clipboard Copied! Toggle word wrap Toggle overflow
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