延伸Ubuntu磁碟分區 - 星球日記

檢查是否有未分配的磁區

vgdisplay

查看第19行，有未分配的空間

  --- Volume group ---
  VG Name               ubuntu-vg
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  2
  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               <62.00 GiB
  PE Size               4.00 MiB
  Total PE              15871
  Alloc PE / Size       7935 / <31.00 GiB
  Free  PE / Size       7936 / 31.00 GiB
  VG UUID               xxxxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxxxx

查看檔案系統/分區

df -h

Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              1.2G  1.9M  1.2G   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   31G   27G  2.2G  93% /
tmpfs                              5.9G     0  5.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
/dev/sda2                          2.0G  242M  1.6G  14% /boot
tmpfs                              1.2G  4.0K  1.2G   1% /run/user/1000
tmpfs                              1.2G  4.0K  1.2G   1% /run/user/0

延伸空間:

lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv

Size of logical volume ubuntu-vg/ubuntu-lv changed from <31.00 GiB (7935 extents) to <62.00 GiB (15871 extents).
Logical volume ubuntu-vg/ubuntu-lv successfully resized.

重新計算

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizing required
old_desc_blocks = 4, new_desc_blocks = 8
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 16251904 (4k) blocks long.

再檢查一次使否已分配未使用的磁區

vgdisplay

  --- Volume group ---
  VG Name               ubuntu-vg
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  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               <62.00 GiB
  PE Size               4.00 MiB
  Total PE              15871
  Alloc PE / Size       15871 / <62.00 GiB
  Free  PE / Size       0 / 0   
  VG UUID               xxxxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxxxx