linux——添加3塊5G硬盤做lvm，2塊新建，1塊做擴展

1.在虛擬機設置裏添加3快新硬盤

[root@guohui ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda               8:0    0   20G  0 disk
├─sda1            8:1    0    1G  0 part /boot
└─sda2            8:2    0   19G  0 part
  ├─centos-root 253:0    0   17G  0 lvm  /
  └─centos-swap 253:1    0    2G  0 lvm  [SWAP]
sdb               8:16   0    5G  0 disk
sdc               8:32   0    5G  0 disk
sdd               8:48   0    5G  0 disk
sr0              11:0    1  3.8G  0 rom

---

2.創建分區

[root@guohui ~]# fdisk /dev/sdb
   設備 Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048    10485759     5241856   83  Linux

[root@guohui ~]# fdisk /dev/sdc
   設備 Boot      Start         End      Blocks   Id  System
/dev/sdc1            2048    10485759     5241856   83  Linux

[root@guohui ~]# fdisk /dev/sdd
   設備 Boot      Start         End      Blocks   Id  System
/dev/sdd1            2048    10485759     5241856   83  Linux

---

3.將磁盤加入物理卷

[root@guohui ~]# pvcreate /dev/sdb1
  Physical volume "/dev/sdb1" successfully created.
[root@guohui ~]# pvcreate /dev/sdc1
  Physical volume "/dev/sdc1" successfully created.
[root@guohui ~]# pvcreate /dev/sdd1
  Physical volume "/dev/sdd1" successfully created.

[root@guohui ~]# pvs             查看
  PV         VG     Fmt  Attr PSize   PFree
  /dev/sda2  centos lvm2 a--  <19.00g     0
  /dev/sdb1         lvm2 ---   <5.00g <5.00g
  /dev/sdc1         lvm2 ---   <5.00g <5.00g
  /dev/sdd1         lvm2 ---   <5.00g <5.00g

---

4.創建卷組 “ jz1 jz2 jz3 ”

[root@guohui ~]# vgcreate jz1 /dev/sdb1
  Volume group "jz1" successfully created
[root@guohui ~]# vgcreate jz2 /dev/sdc1
  Volume group "jz2" successfully created
[root@guohui ~]# vgcreate jz3 /dev/sdd1
  Volume group "jz3" successfully created

查看

[root@guohui ~]# vgs
  VG     #PV #LV #SN Attr   VSize   VFree
  centos   1   2   0 wz--n- <19.00g     0
  jz1      1   0   0 wz--n-  <5.00g <5.00g
  jz2      1   0   0 wz--n-  <5.00g <5.00g
  jz3      1   0   0 wz--n-  <5.00g <5.00g

---

5.創建邏輯卷 “ lj1 lj2 lj3 ”大小以及分配邏輯卷名稱和卷組

[root@guohui ~]#  lvcreate -L 1G -n lj1 jz1
  Logical volume "lj1" created.
[root@guohui ~]#  lvcreate -L 1G -n lj1 jz2
  Logical volume "lj1" created.
[root@guohui ~]#  lvcreate -L 1G -n lj1 jz3
  Logical volume "lj1" created.

查看

[root@guohui ~]# lvscan
  ACTIVE            '/dev/jz3/lj1' [1.00 GiB] inherit
  ACTIVE            '/dev/jz2/lj1' [1.00 GiB] inherit
  ACTIVE            '/dev/jz1/lj1' [1.00 GiB] inherit
  ACTIVE            '/dev/centos/swap' [2.00 GiB] inherit
  ACTIVE            '/dev/centos/root' [<17.00 GiB] inherit

---

格式化文件系統爲ext4

[root@guohui ~]# mkfs.ext4 /dev/jz1/lj1
[root@guohui ~]# mkfs.ext4 /dev/jz2/lj1
[root@guohui ~]# mkfs.ext4 /dev/jz3/lj1

---

掛載到yp1 yp2 yp3

mkdir /yp1
mkdir /yp2
mkdir /yp3
mount /dev/jz1/lj1 /yp1/
mount /dev/jz2/lj1 /yp2/
mount /dev/jz3/lj1 /yp3/

---

做擴展

[root@guohui ~]# lvextend -L +1G /dev/jz3/lj1
  Size of logical volume jz3/lj1 changed from 1.00 GiB (256 extents) to 2.00 GiB (512 extents).
  Logical volume jz3/lj1 successfully resized.

最後lsblk查看