目标

  指定物理卷，并进行创建虚拟卷组

实际操作

• 指定物理卷

[root@localhost ~]# pvcreate /dev/sdd2 /dev/sdd3
  Physical volume "/dev/sdd2" successfully created.
  Physical volume "/dev/sdd3" successfully created.

• 创建虚拟卷

[root@localhost ~]# vgcreate -s 10m data-base /dev/sdd2 /dev/sdd3
  Volume group "data-base" successfully created

• 创建逻辑卷

[root@localhost ~]# lvcreate -n lvbase -L 500m data-base
  Logical volume "lvbase" created.

• 查看创建的逻辑卷、虚拟卷、物理卷

[root@localhost ~]# pvdisplay 
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               centos
  PV Size               <49.00 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              12543
  Free PE               0
  Allocated PE          12543
  PV UUID               kcNDlC-ZZiy-1O05-BzUP-x99U-LraL-YWxUMz

  --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               centos
  PV Size               <20.00 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              5119
  Free PE               0
  Allocated PE          5119
  PV UUID               cgJKfU-rvI3-C6Vj-eo0M-9W1J-cpF0-y0Vufd

  --- Physical volume ---
  PV Name               /dev/sdd2
  VG Name               data-base
  PV Size               <1.91 GiB / not usable 2.00 MiB
  Allocatable           yes 
  PE Size               10.00 MiB
  Total PE              195
  Free PE               145
  Allocated PE          50
  PV UUID               7i1ZrZ-Y6Qy-tReB-RXgU-AXSZ-IjuF-kVfaS6

  --- Physical volume ---
  PV Name               /dev/sdd3
  VG Name               data-base
  PV Size               <1.88 GiB / not usable 5.00 MiB
  Allocatable           yes 
  PE Size               10.00 MiB
  Total PE              192
  Free PE               192
  Allocated PE          0
  PV UUID               ccI8mA-OYwe-5bOG-pVBe-itiP-VUhJ-Co8Ogn

##查看当前的虚拟卷
[root@localhost ~]# vgdisplay 
  --- Volume group ---
  VG Name               centos
  System ID             
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               68.99 GiB
  PE Size               4.00 MiB
  Total PE              17662
  Alloc PE / Size       17662 / 68.99 GiB
  Free  PE / Size       0 / 0   
  VG UUID               UBNeSW-7g3e-LhDF-3qv4-h0vv-oot2-4LgTqY

  --- Volume group ---
  VG Name               data-base
  System ID             
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  2
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               0
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               <3.78 GiB
  PE Size               10.00 MiB
  Total PE              387
  Alloc PE / Size       50 / 500.00 MiB
  Free  PE / Size       337 / 3.29 GiB
  VG UUID               3VffSV-Vafm-rtGl-LFpY-wjZB-rPUe-fMBaiK

##查看data-base的虚拟卷的逻辑卷
[root@localhost ~]# lvdisplay data-base
  --- Logical volume ---
  LV Path                /dev/data-base/lvbase
  LV Name                lvbase
  VG Name                data-base
  LV UUID                H0nGC5-QfqJ-qzEf-0oUr-8LcT-wrVz-D1rXsl
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2022-11-08 16:08:39 +0800
  LV Status              available
  # open                 0
  LV Size                500.00 MiB
  Current LE             50
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:3