ubuntu20.04 server 安装后磁盘空间只有一半的处理-Toy模板网

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这里扩展：/dev/mapper/ubuntu–vg-ubuntu–lv文章来源地址https://www.toymoban.com/news/detail-682278.html

root@book:/data# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               3.9G     0  3.9G   0% /dev
tmpfs                              795M  1.2M  794M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   48G   11G   35G  24% /
tmpfs                              3.9G     0  3.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
tmpfs                              3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/loop1                          50M   50M     0 100% /snap/snapd/18357
/dev/loop2                          41M   41M     0 100% /snap/snapd/19993
/dev/loop0                          64M   64M     0 100% /snap/core20/1828
/dev/loop4                          64M   64M     0 100% /snap/core20/2015
/dev/loop3                          92M   92M     0 100% /snap/lxd/24061
/dev/sda2                          2.0G  209M  1.6G  12% /boot
tmpfs                              795M     0  795M   0% /run/user/0

root@book:/data# sudo vgdisplay
  --- 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               <98.00 GiB
  PE Size               4.00 MiB
  Total PE              25087
  Alloc PE / Size       12543 / <49.00 GiB
  Free  PE / Size       12544 / 49.00 GiB
  VG UUID               Mk5zlb-zqJO-3KgW-FbJ0-Q253-8msJ-0sGMYy

root@book:/data# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               3.9G     0  3.9G   0% /dev
tmpfs                              795M  1.2M  794M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   48G   11G   35G  24% /
tmpfs                              3.9G     0  3.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
tmpfs                              3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/loop1                          50M   50M     0 100% /snap/snapd/18357
/dev/loop2                          41M   41M     0 100% /snap/snapd/19993
/dev/loop0                          64M   64M     0 100% /snap/core20/1828
/dev/loop4                          64M   64M     0 100% /snap/core20/2015
/dev/loop3                          92M   92M     0 100% /snap/lxd/24061
/dev/sda2                          2.0G  209M  1.6G  12% /boot
tmpfs                              795M     0  795M   0% /run/user/0

root@book:/data# sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from <49.00 GiB (12543 exte                                                                                                                              nts) to <98.00 GiB (25087 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.
  
root@book:/data# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               3.9G     0  3.9G   0% /dev
tmpfs                              795M  1.2M  794M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   48G   11G   35G  24% /
tmpfs                              3.9G     0  3.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
tmpfs                              3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/loop1                          50M   50M     0 100% /snap/snapd/18357
/dev/loop2                          41M   41M     0 100% /snap/snapd/19993
/dev/loop0                          64M   64M     0 100% /snap/core20/1828
/dev/loop4                          64M   64M     0 100% /snap/core20/2015
/dev/loop3                          92M   92M     0 100% /snap/lxd/24061
/dev/sda2                          2.0G  209M  1.6G  12% /boot
tmpfs                              795M     0  795M   0% /run/user/0

root@book:/data# sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizin                                                                                                                              g required
old_desc_blocks = 7, new_desc_blocks = 13
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 25689088 (4k) blocks                                                                                                                               long.

root@book:/data# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               3.9G     0  3.9G   0% /dev
tmpfs                              795M  1.2M  794M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   97G   11G   82G  12% /
tmpfs                              3.9G     0  3.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
tmpfs                              3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/loop1                          50M   50M     0 100% /snap/snapd/18357
/dev/loop2                          41M   41M     0 100% /snap/snapd/19993
/dev/loop0                          64M   64M     0 100% /snap/core20/1828
/dev/loop4                          64M   64M     0 100% /snap/core20/2015
/dev/loop3                          92M   92M     0 100% /snap/lxd/24061
/dev/sda2                          2.0G  209M  1.6G  12% /boot
tmpfs                              795M     0  795M   0% /run/user/0