[root@centos-6 ~]# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created

[root@centos-6 ~]# pvscan PV /dev/sda2 VG VolGroup lvm2 [19.51 GiB / 0 free] PV /dev/sdb1 lvm2 [10.00 GiB] Total: 2 [29.51 GiB] / in use: 1 [19.51 GiB] / in no VG: 1 [10.00 GiB]

[root@centos-6 ~]# vgcreate vgtest /dev/sdb1 Volume group "vgtest" successfully created

[root@centos-6 ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "vgtest" using metadata type lvm2 Found volume group "VolGroup" using metadata type lvm2

[root@centos-6 ~]# vgdisplay --- Volume group ---VG Name vgtest System ID  Format lvm2 Metadata Areas 1 Metadata Sequence No 1 VG Access read/write VG Status resizable MAX LV 0 Cur LV 0 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 10.00 GiB PE Size 4.00 MiB Total PE 2560 Alloc PE / Size 0 / 0 Free PE / Size 2560 / 10.00 GiB VG UUID 59Z2ML-CEzB-PivW-zNq9-2kbv-hscJ-drFdR9 --- Volume group --- VG Name VolGroup System ID  Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 19.51 GiB PE Size 4.00 MiB Total PE 4994 Alloc PE / Size 4994 / 19.51 GiB Free PE / Size 0 / 0  VG UUID UPJDXo-8RjG-muVj-nVnt-hjXI-aZVv-uGGc2x

[root@centos-6 ~]# lvcreate -l 2560 -n lvdata vgtest  Logical volume "lvdata" created.

[root@centos-6 ~]# mkfs -t ext4 /dev/vgtest/lvdatamke2fs 1.41.12 (17-May-2010)文件系統標簽=操作系統:Linux塊大小=4096 (log=2)分塊大小=4096 (log=2)Stride=0 blocks, Stripe width=0 blocks655360 inodes, 2621440 blocks131072 blocks (5.00%) reserved for the super user第一個數據塊=0Maximum filesystem blocks=268435456080 block groups32768 blocks per group, 32768 fragments per group8192 inodes per groupSuperblock backups stored on blocks:  32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632

Creating journal (32768 blocks): 完成Writing superblocks and filesystem accounting information: 完成This filesystem will be automatically checked every 39 mounts or180 days, whichever comes first. Use tune2fs -c or -i to override.

[root@centos-6 ~]# mkdir -p /data

[root@centos-6 ~]# mount /dev/vgtest/lvdata /data

[root@centos-6 ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/VolGroup-lv_root 18G 4.9G 12G 30% /tmpfs 125M 72K 125M 1% /dev/shm/dev/sda1 477M 37M 416M 9% /boot/dev/mapper/vgtest-lvdata 9.8G 23M 9.2G 1% /data

[root@centos-6 ~]# vi /etc/fstab## /etc/fstab# Created by anaconda on Sat Feb 3 00:44:14 2018## Accessible filesystems, by reference, are maintained under '/dev/disk'# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info#/dev/mapper/VolGroup-lv_root / ext4 defaults 1 1UUID=49120546-3d8d-4b2e-8559-448613dc072a /boot ext4 defaults 1 2/dev/mapper/VolGroup-lv_swap swap swap defaults 0 0tmpfs /dev/shm tmpfs defaults 0 0devpts /dev/pts devpts gid=5,mode=620 0 0sysfs /sys sysfs defaults 0 0proc /proc proc defaults 0 0/dev/mapper/vgtest-lvdata /data ext4 defaults 0 0