linux 20t硬盘怎么分区

匿名用户

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2016-10-28 回答

为什么要分区，创造一个 LVM可以，它是一种可用的Linux内核逻辑分卷管理器；可用于管理磁盘驱动器或其他类似的大容量存储设备。

LVM基本组成块(building blocks)如下：

物理卷Physical volume (PV)：卷组的媒介可以在上面建立，可以是硬盘分区，也可以是硬盘本身或回环文件(loopback file)。物理卷包括一个特殊的物理卷header，其余部分被切割成物理区(physical extents)。 Think of physical volumes as big building blocks which can be used to build your hard drive.

卷组Volume group (VG)：收集一组物理卷作为管理单位。Group of physical volumes that are used as storage volume (as one disk). They contain logical volumes. Think of volume groups as hard drives.

逻辑卷Logical volume (LV)：虚拟分区由物理区域组成(physical extents)组成。A "virtual/logical partition" that resides in a volume group and is composed of physical extents. Think of logical volumes as normal partitions.

物理区域Physical extent (PE)：硬盘可以分配给最小的逻辑卷(通常是4MB)。A small part of a disk (usually 4MB) that can be assigned to a logical Volume. Think of physical extents as parts of disks that can be allocated to any partition.

因为服务器的文件会越来越大，占用的空间也会越来越多，所以一般使用LVM在未来空间不足的时候，可以随时添加新的硬盘来解决空间问题。