LVM逻辑卷创建

创建步骤

• 1.创建分区
• 2.创建PV
• 3.创建VG
• 4.创建LV
• 5.格式化及挂载

创建分区

使用分区工具（如fdisk等）创建LVM分区。

创建PV

$ pvcreate /dev/sdb5          #将每个分区转换成PV
  Physical volume "/dev/sdb5" successfully created

创建VG

$ vgcreate data /dev/sdb5
 Volume group "vg01" successfully created

创建LV

• 分配100G大小

$ lvcreate -L 100G -n docker data
  Logical volume "docker" created.

• 使用全部vg的容量

lvcreate -l 100%VG  -n docker data

格式化及挂载

$ mkfs.xfs /dev/data/docker
meta-data=/dev/data/docker         isize=256    agcount=4, agsize=65536 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0
data     =                       bsize=4096   blocks=262144, 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

$ mkdir /var/lib/docker
$ mount /dev/data/docker  /var/lib/docker
$ df -h                   #查看验证
Filesystem             Size  Used Avail Use% Mounted on
……
/dev/mapper/data-docker 100G   33M  100G   1% /var/lib/docker