RHCSA-创建一个逻辑卷

 [root@server0 ~]# fdisk /dev/vdb                  ////进入磁盘/dev/vdb

Command (m for help): n           ////创建分区

Partition type:

   p   primary (1 primary, 1 extended, 2 free)

   l   logical (numbered from 5)

Select (default p): l             ////选择逻辑分区

Adding logical partition 7

First sector (3809280-20971519, default 3809280):

Using default value 3809280

Last sector, +sectors or +size{K,M,G} (3809280-20971519, default 20971519): +1G            ////设置分区大小1G

Partition 7 of type Linux and of size 1 GiB is set

 

Command (m for help): t               ////修改分区类型

Partition number (1,2,5-7, default 7): 7

Hex code (type L to list all codes): 8e          ////改为linux LVM类型

Changed type of partition 'Linux' to 'Linux LVM'

 

Command (m for help): w

 [root@server0 ~]# partprobe /dev/vdb              ////确认磁盘

 [root@server0 ~]# pvcreate /dev/vdb7              ////创建物理卷

  Physical volume "/dev/vdb7" successfully created

[root@server0 ~]# vgcreate -s 16M qagroup /dev/vdb7              ////创建卷组qagroup，设置基本扩展单元16M

[root@server0 ~]# lvcreate -l 60 -n qa qagroup                            ////创建逻辑卷，大小60个扩展单元

  Logical volume "qa" already exists in volume group "qagroup"

[root@server0 ~]# mkfs.ext3 /dev/qagroup/qa                 ////用ext3文件格式化逻辑卷qa

[root@server0 ~]# mkdir /mnt/cheshi1                              ////创建ceshi1目录

[root@server0 ~]# vim /etc/fstab                                         ////挂载逻辑卷（本次使用uuid进行挂载）

/dev/qagroup/qa            /mnt/ceshi1        ext3         defaults   0  0

 

[root@server0 ~]# mount –a                ////检验挂载结果

 [root@server0 ~]# df –h