Shulou(Shulou.com)06/02 Report--

I. lvm logic volume

The role of 1.lvm

Dynamically resize disk space

Characteristics of 2.lvm

Breaking the traditional partition must be a continuous increase in disk utilization.

Dynamically resize the partition

Strong scalability

Use system-config-lvm tools for management

Boot partitions cannot use lvm logical volumes

Second, the composition of logical volumes

1.pv physical Volume

Converting a normal partition to a physical volume is divided into several small chunks

Each block is 4m, which is convenient for users to expand and contract.

2.vg volume group

Vg will be located in multiple hard disk partitions for unified management.

You must create a physical volume before creating a volume group

You must create a physical volume before creating a volume group

Vg is flexible.

3.lv logical Volume

Logical volumes are used to store data usage

Logical volumes must be created on the basis of volume groups

III. Basic management configuration of lvm

Today, we need to turn on the graphical system of centos7, add two new 100g hard drives in the shutdown state, and then turn it on to a command line interface.

1. Manage pv physical volumes

two。 Manage vg volume groups

3. Manage lv logical volumes

4. Format lvm logical Volume Mount logical Volume

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