添加磁盘 /dev/sdb
root@registry01 ~]# fdisk -l
Disk /dev/sda: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00020a75
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 62914559 30407680 8e Linux LVM
Disk /dev/sdb: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-root: 27.9 GB, 27913093120 bytes, 54517760 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 3221 MB, 3221225472 bytes, 6291456 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
# 创建 pv
[root@registry01 ~]# pvcreate /dev/sdb
Physical volume "/dev/sdb" successfully created.
[root@registry01 ~]# vgcreate data_vg /dev/sdb
Volume group "data_vg" successfully created
#创建挂载目录
[root@registry01 ~]# mkdir /data
[root@registry01 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
centos 1 2 0 wz--n- <29.00g 0
data_vg 1 0 0 wz--n- <100.00g <100.00g
#创建 逻辑卷，名字data_lv
[root@registry01 ~]# lvcreate -L 99.5G -n data_lv data_vg
Logical volume "data_lv" created.
[root@registry01 ~]# mkfs.xfs /dev/data_vg/data_lv
meta-data=/dev/data_vg/data_lv isize=512 agcount=4, agsize=6520832 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=26083328, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=12736, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
#获取UUID
[root@registry01 ~]# blkid
/dev/sda1: UUID="6243936c-cd94-465f-b204-ae0841e0d212" TYPE="xfs"
/dev/sda2: UUID="6SOs6z-YAgw-R32V-HXsi-i8hw-f20k-KPSRYo" TYPE="LVM2_member"
/dev/sdb: UUID="ziwiW3-SpjB-Ex5t-6ujx-oSIS-H3g2-Lc0Yta" TYPE="LVM2_member"
/dev/mapper/centos-root: UUID="202ea48b-32fe-4750-96af-669583ee7786" TYPE="xfs"
/dev/mapper/centos-swap: UUID="f9810a4e-572b-4e5f-86bb-fc442fb28884" TYPE="swap"
/dev/mapper/data_vg-data_lv: UUID="91af294a-f615-4edc-8c30-7a99a11c1a4e" TYPE="xfs"
挂载
echo "UUID="91af294a-f615-4edc-8c30-7a99a11c1a4e" /data xfs defaults 0 0" >> /etc/fstab
mount -a
df -Th
查看
[root@registry01 ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
devtmpfs devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs tmpfs 3.9G 8.7M 3.9G 1% /run
tmpfs tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/centos-root xfs 26G 2.1G 24G 8% /
/dev/sda1 xfs 1014M 221M 794M 22% /boot
tmpfs tmpfs 795M 0 795M 0% /run/user/0
/dev/mapper/data_vg-data_lv xfs 100G 33M 100G 1% /data
参考：