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
原文：https://www.cnblogs.com/tianyingz/p/13346481.html
