Linux磁盘空间扩展

短命女 2021-11-11 18:54 416阅读 0赞

使用gparted工具分区。  
apt install gparted  
gparted  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1N1bnhpYW9saW4yMDE2_size_16_color_FFFFFF_t_70]

以下尝试是手动分区和挂载：

1.查看磁盘剩余空间  
df -hl

2.查看磁盘空间状态,确认总空间大小和未分配空间大小  
fdisk -l

3.进入磁盘分配选项  
fdisk /dev/sda

Welcome to fdisk (util-linux 2.31.1).
    Changes will remain in memory only, until you decide to write them.
    Be careful before using the write command.
    
       i   print information about a partition
    
      Misc
       m   print this menu
       u   change display/entry units
       x   extra functionality (experts only)
    
      Script
       I   load disk layout from sfdisk script file
       O   dump disk layout to sfdisk script file
    
      Save & Exit
       w   write table to disk and exit
       q   quit without saving changes
    
      Create a new label
       g   create a new empty GPT partition table
       G   create a new empty SGI (IRIX) partition table
       o   create a new empty DOS partition table
       s   create a new empty Sun partition table

输入命令：  
n，新建一个新的分区

Command (m for help): n
    Partition type
       p   primary (1 primary, 0 extended, 3 free)
       e   extended (container for logical partitions)

p，主分区，e，扩展分区

Select (default p): e
    Partition number (2-4, default 2): 2
    First sector (41940992-104857599, default 41940992): 
    Last sector, +sectors or +size{ K,M,G,T,P} (41940992-104857599, default 104857599): 
    
    Created a new partition 2 of type 'Extended' and of size 30 GiB.

w，保存退出

4.再查看磁盘空间，分区完成  
fdisk -l

Disk /dev/sda: 50 GiB, 53687091200 bytes, 104857600 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
    Disklabel type: dos
    Disk identifier: 0xbe6ff238
    
    Device     Boot    Start       End  Sectors Size Id Type
    /dev/sda1  *        2048  41940991 41938944  20G 83 Linux
    /dev/sda2       41940992 104857599 62916608  30G  5 Extended

5.格式化  
mkfs -t ext4 /dev/sda2

6.临时挂在到home目录，没有该目录新建一个  
mount /dev/sda2 /mnt/home

7.修改分区id为LVM，LVM为Logical Volume Manager  
fdisk /dev/sda  
t,改变分区系统id  
8e,修改为LVM类型

Command (m for help): t
    Partition number (1,2, default 2): 2
    Hex code (type L to list all codes): 8e
    
    Changed type of partition 'Extended' to 'Linux LVM'.
    
    Command (m for help): w
    The partition table has been altered.
    Syncing disks.

8.扩展新分区  
pvcreate /dev/sda2

apt install lvm2

//pvcreate指令用于将物理硬盘分区初始化为物理卷，以便被LVM使用。要创建物理卷必须首先对硬盘进行分区，并且将硬盘分区的类型设置为“8e”后，才能使用pvcreate指令将分区初始化为物理卷。

pvcreate /dev/sda2
    Device /dev/sda2 excluded by a filter.

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