1、创建LV 卷

环境说明：

虚拟机软件：vmware15

系统：centos7.1 最小化安装

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1、更新lvm2包

yum install lvm2

2、创建物理卷

[root@localhost ~]# pvcreate /dev/sdb /dev/sdc
  Physical volume "/dev/sdb" successfully created.
  Physical volume "/dev/sdc" successfully created.
[root@localhost ~]# 

3、创建卷组

[root@localhost ~]# vgcreate vg_name /dev/sdb /dev/sdc 
  Volume group "vg_name" successfully created
[root@localhost ~]# 

4、创建逻辑卷

[root@localhost ~]# lvcreate -n lv_1 -L 11G vg_name  #lv_1 是逻辑卷的名称  ， -L 11G 是指定逻辑卷的大小为11G ， vg_name 是卷组的名字
  Logical volume "lv_1" created.
[root@localhost ~]# 

5、格式化逻辑卷

[root@localhost ~]# mkfs.xfs /dev/vg_name/lv_1 
meta-data=/dev/vg_name/lv_1      isize=256    agcount=4, agsize=720896 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0
data     =                       bsize=4096   blocks=2883584, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
[root@localhost ~]# 

6、创建挂载点并挂载逻辑卷

[root@localhost ~]# mkdir /mnt/lv_1
[root@localhost ~]# mount /dev/vg_name/lv_1 /mnt/lv_1/
[root@localhost ~]# 

7、将磁盘信息写入/etc/fstab文件中，使其永久生效

[root@localhost ~]# echo "/dev/vg_name/lv_1 /mnt/lv_1 xfs defaults 0 0" >> /etc/fstab