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Linux LVM #131

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junxnone opened this issue Aug 12, 2024 · 0 comments
Open

Linux LVM #131

junxnone opened this issue Aug 12, 2024 · 0 comments

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@junxnone
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junxnone commented Aug 12, 2024

LVM

  • LVM
  • PV 就是建立在物理磁盘和磁盘分区之上一个层,它可以把磁盘的分区或 Raid 阵列创建为 PV 层,只有创建为 PV 后才可以作为 LVM 的基础使用。
  • VG 是将单个或多个 PV 组成的一个卷组,卷组共享这些 PV 的总空间,一个 VG 对于 LVM 来说就相当于一块虚拟的磁盘,只是这个磁盘我们可以通过调整参与的 PV 灵活的调整整个 VG 的可用空间,这是 LVM 的核心特点。
  • LV 相当于在 VG 之上真正创建出来的分区,这个分区最终挂载到文件系统中来直接使用

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