当安装Ubuntu的过程中没有将所有的磁盘都挂载到系统怎么办?

# 先检查现有磁盘空间
root@ubuntu:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               1.9G     0  1.9G   0% /dev
tmpfs                              379M  1.5M  377M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv  108G  7.0G   96G   7% /
tmpfs                              1.9G     0  1.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
tmpfs                              1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/loop0                          62M   62M     0 100% /snap/core20/1328
/dev/loop1                          44M   44M     0 100% /snap/snapd/14978
/dev/loop2                          68M   68M     0 100% /snap/lxd/21835
/dev/sda2                          1.5G  107M  1.3G   8% /boot
/dev/sda1                          1.1G  6.1M  1.1G   1% /boot/efi
tmpfs                              378M     0  378M   0% /run/user/1000
 
# 查看磁盘总大小
root@ubuntu:~# fdisk -l
Disk /dev/loop0: 61.93 MiB, 64917504 bytes, 126792 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/loop1: 43.6 MiB, 45703168 bytes, 89264 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/loop2: 67.25 MiB, 70508544 bytes, 137712 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/sda: 111.81 GiB, 120034123776 bytes, 234441648 sectors
Disk model: KINGSTON SA400S3
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: gpt
Disk identifier: 6E678751-EB9F-4B09-82AD-84D593C33C9E
 
Device       Start       End   Sectors   Size Type
/dev/sda1     2048   2203647   2201600   1.1G EFI System
/dev/sda2  2203648   5349375   3145728   1.5G Linux filesystem
/dev/sda3  5349376 234438655 229089280 109.2G Linux filesystem
 
 
Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 109.12 GiB, 117163687936 bytes, 228835328 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
 
 
# 假如挂载磁盘大小不等于磁盘总大小，则修改挂载空间
# 查看卷组信息
root@ubuntu:~# vgdisplay
  --- Volume group ---
  VG Name               ubuntu-vg
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               109.23 GiB
  PE Size               4.00 MiB
  Total PE              27964
  Alloc PE / Size       27934 / <109.12 GiB
  Free  PE / Size       30 / 120.00 MiB
  VG UUID               WR6hCE-MKug-t90p-16Eh-hg2z-5YJ5-HQWfF9
 
# 查看逻辑卷大小
root@ubuntu:~# lvdisplay
  --- Logical volume ---
  LV Path                /dev/ubuntu-vg/ubuntu-lv
  LV Name                ubuntu-lv
  VG Name                ubuntu-vg
  LV UUID                IudUnV-P03y-YKKf-cS7r-uE0p-HmDy-sx3Lln
  LV Write Access        read/write
  LV Creation host, time ubuntu-server, 2023-02-17 14:05:25 +0800
  LV Status              available
  # open                 1
  LV Size                <109.12 GiB
  Current LE             27934
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0
 
# 上面的所有信息是已经修正了的
# 如果磁盘空间大小不正确，那么用下面的命令增加逻辑卷大小（增加53.5G）【手动、自动 二选一即可】
# 手动指定
lvextend -L +53.5G /dev/mapper/ubuntu--vg-ubuntu--lv
# 自动获取剩余
lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
 
# 执行下列命令生效，否则df -h看到的还是原始信息
resize2fs  /dev/mapper/ubuntu--vg-ubuntu--lv
 
 
# 查看修改后的信息
root@ubuntu:~# df -h