> For the complete documentation index, see [llms.txt](https://huataihuang.gitbook.io/cloud-atlas-draft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://huataihuang.gitbook.io/cloud-atlas-draft/os/linux/storage/lvm/using_lvm_on_gentoo.md).

# 在Gentoo上使用LVM

> `Multiple devices driver support (RAID and LVM)`配置子项`Block device as cache`提供了将块设备作为其他设备的缓存的支持，使用一种btree算法针对SSD优化索引和分布。
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> `Device mapper support`配置的子项有一个`I/O delaying target`，可以用来模拟存储设备延迟，适合作为故障测试。