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1.1. 系统版本:
- [root@localhost ~]# cat /etc/RedHat-release
- CentOS Linux release 7.4.1708 (Core)
- ###########################################################################
2.1. 查看系统磁盘状况:
- [root@localhost ~]# fdisk -l
- Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 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: 0x00064b7e
- Device Boot Start End Blocks Id System
- /dev/sda1 * 2048 1026047 512000 83 Linux
- /dev/sda2 1026048 41943039 20458496 8e Linux LVM
- Disk /dev/sdb: 21.5 GB, 21474836480 bytes, 41943040 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: 0x7161e435
- Device Boot Start End Blocks Id System
- /dev/sdb1 2048 41943039 20970496 8e Linux LVM
- Disk /dev/sdc: 21.5 GB, 21474836480 bytes, 41943040 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: 15.7 GB, 15703474176 bytes, 30670848 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: 5242 MB, 5242880000 bytes, 10240000 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/vggroup001-lvdata: 20.4 GB, 20401094656 bytes, 39845888 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
- ######################################################################
3.1 使用 fdisk 创建分区, 进入分区管理
- [root@localhost ~]# fdisk /dev/sdc
- Welcome to fdisk (util-Linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x17068859.
- Command (m for help): n # 新建分区.
- Partition type:
- p primary (0 primary, 0 extended, 4 free)
- e extended # 扩展分区.
- Select (default p): p # 新建分区为主分区 .
- Partition number (1-4, default 1): 1 # 分区的 ID 号.
- First sector (2048-41943039, default 2048):
- Using default value 2048
- Last sector, +sectors or +size{
- K,M,G
- } (2048-41943039, default 41943039):
- Using default value 41943039
- Partition 1 of type Linux and of size 20 GiB is set
- Command (m for help): t # 修改分区格式.
- Selected partition 1
- Hex code (type L to list all codes): 8e # 类型改为 8e.
- Changed type of partition 'Linux' to 'Linux LVM'
- Command (m for help): p # 查看当前分区.
- Disk /dev/sdc: 21.5 GB, 21474836480 bytes, 41943040 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: 0x17068859
- Device Boot Start End Blocks Id System
- /dev/sdc1 2048 41943039 20970496 8e Linux LVM
- Command (m for help): w # 保存.
- The partition table has been altered!
- Calling ioctl() to re-read partition table.
Syncing disks.
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4.1 创建 PV.
- [root@localhost ~]# pvcreate /dev/sdc1 # 创建 PV.
- Physical volume "/dev/sdc1" successfully created.
- [root@localhost ~]# partprobe
- [root@localhost ~]# pvdisplay # 查看 PV.
- "/dev/sdc1" is a new physical volume of "<20.00 GiB"
- --- NEW Physical volume ---
- PV Name /dev/sdc1
- VG Name
- PV Size <20.00 GiB
- Allocatable NO
- PE Size 0
- Total PE 0
- Free PE 0
- Allocated PE 0
- PV UUID xED2qY-b0XV-8MXi-61nG-0aiV-E4qX-Sz2EpI
- ###########################################################################
5..1 创建 VG
- [root@localhost ~]# vgcreate vgGroup001 /dev/sdc1 # 创建 VG.
- Volume group "vgGroup001" successfully created
- [root@localhost ~]# pvdisplay # 查看 VG.
- --- Physical volume ---
- PV Name /dev/sdc1
- VG Name vgGroup001
- PV Size <20.00 GiB / not usable 3.00 MiB
- Allocatable yes
- PE Size 4.00 MiB
- Total PE 5119
- Free PE 5119
- Allocated PE 0
- PV UUID xED2qY-b0XV-8MXi-61nG-0aiV-E4qX-Sz2EpI
- #######################################################################
6..1 创建 LV
- 7.[root@localhost ~]# lvcreate -L 19G -n lvdata vgGroup001 # 创建 LV.
- Logical volume "lvdata" created.
- [root@localhost ~]# lvdisplay # 查看 LV.
- LV Path /dev/vgGroup001/lvdata
- LV Name lvdata
- VG Name vgGroup001
- LV UUID jnoLUA-1vQF-sauB-PY75-kqLe-o13p-fdwK8e
- LV Write Access read/write
- LV Creation host, time localhost.localdomain, 2018-11-15 03:43:40 -0500
- LV Status available
- LV Size 19.00 GiB
- Current LE 4864
- Segments 1
- Allocation inherit
- Read ahead sectors auto
- currently set to 8192
- Block device 253:3
- #########################################################################
7.1 格式化磁盘.
[root@localhost ~]# mkfs -t ext4 /dev/vgGroup001/lvdata
8.1 配置临时挂载
- [root@localhost ~]# mkdir /data
- [root@localhost ~]# mount /dev/vgGroup001/lvdata /data/
9.1 配置开机自动挂载
- [root@localhost ~]# blkid /dev/vgGroup001/lvdata # 查看磁盘 UUID
- /dev/vgGroup001/lvdata: UUID="3c7b53fe-0178-42d1-82cb-55183cdf1a78" TYPE="ext4
9.1.1. 编辑文件 / etc/fstab, 在文件末尾添加一行
UUID="3c7b53fe-0178-42d1-82cb-55183cdf1a78 /data ext4 defaults 0 2
参数解释:
UUID=bb84333a-6a0d-4285-a14c-cf8b5da88d61: 要挂载的磁盘分区的 UUID
/data: 挂载目录
ext4: 分区格式为 ext4
defaults: 挂载时所要设定的参数 (只读, 读写, 启用 quota 等), 输入 defaults 包括的参数有 (rw,dev,exec,auto,nouser,async)
0: 使用 dump 是否要记录, 0 为不需要, 1 为需要
2:2 是开机时检查的顺序, boot 系统文件为 1, 其他文件系统都为 2, 如不要检查就为 0
来源: http://www.bubuko.com/infodetail-2848260.html