Ubuntu扩展根目录空间

此文章为扩展磁盘空间
Ubuntu扩展磁盘空间

通过上面文章进行操作我们可以得到一个20G的sda4

通过df -h，可以看到根目录空间不足，而新扩展的sda4有20G

root@li:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               3.9G     0  3.9G   0% /dev
tmpfs                              793M  1.6M  792M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   19G   15G  2.8G  85% /
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/sda4                           20G   45M   19G   1% /home/all
/dev/sda2                          976M  108M  801M  12% /boot
/dev/loop0                          56M   56M     0 100% /snap/core18/2128
/dev/loop1                          56M   56M     0 100% /snap/core18/2409
/dev/loop2                          62M   62M     0 100% /snap/core20/1518
/dev/loop4                          68M   68M     0 100% /snap/lxd/22753
/dev/loop3                          71M   71M     0 100% /snap/lxd/21029
/dev/loop5                          47M   47M     0 100% /snap/snapd/16010
/dev/loop6                          47M   47M     0 100% /snap/snapd/16292
tmpfs                              793M     0  793M   0% /run/user/0

所以将根目录空间扩展。

umount /dev/sda4

vgextend ubuntu-vg /dev/sda4

调用lvextend进行扩容，20G为我自己设的，根据各自情况来

lvextend -L +20G /dev/ubuntu-vg/ubuntu-lv /dev/sda4

使用lvdisplay， 发现lv空间已经增加

root@li:~# lvdisplay 
  --- Logical volume ---
  LV Path                /dev/ubuntu-vg/ubuntu-lv
  LV Name                ubuntu-lv
  VG Name                ubuntu-vg
  LV UUID                XYJs9M-cx52-QCdf-Jyea-367K-evC0-Vsk9NF
  LV Write Access        read/write
  LV Creation host, time ubuntu-server, 2022-06-07 14:08:01 +0000
  LV Status              available

  LV Size                <39.00 GiB
  Current LE             9983
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto

  - currently set to     256
    Block device           253:0

使用df -h，发现根目录容量并未增加

root@li:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               3.9G     0  3.9G   0% /dev
tmpfs                              793M  1.6M  792M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   19G   15G  2.7G  85% /
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/sda2                          976M  108M  801M  12% /boot
/dev/loop1                          56M   56M     0 100% /snap/core18/2409
/dev/loop2                          62M   62M     0 100% /snap/core20/1518
/dev/loop4                          68M   68M     0 100% /snap/lxd/22753
/dev/loop3                          71M   71M     0 100% /snap/lxd/21029
/dev/loop5                          47M   47M     0 100% /snap/snapd/16010
/dev/loop6                          47M   47M     0 100% /snap/snapd/16292
tmpfs                              793M     0  793M   0% /run/user/0
/dev/loop7                          56M   56M     0 100% /snap/core18/2538

使用 resize2fs /dev/mapper/ubuntu–vg-ubuntu–lv 进行刷新

root@li:~# 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 resizing required
old_desc_blocks = 3, new_desc_blocks = 5
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 10222592 (4k) blocks long.

使用df -h 再次查看，发现根目录容量已增加

root@li:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               3.9G     0  3.9G   0% /dev
tmpfs                              793M  1.6M  792M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   39G   15G   22G  41% /
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/sda2                          976M  108M  801M  12% /boot
/dev/loop1                          56M   56M     0 100% /snap/core18/2409
/dev/loop2                          62M   62M     0 100% /snap/core20/1518
/dev/loop4                          68M   68M     0 100% /snap/lxd/22753
/dev/loop3                          71M   71M     0 100% /snap/lxd/21029
/dev/loop5                          47M   47M     0 100% /snap/snapd/16010
/dev/loop6                          47M   47M     0 100% /snap/snapd/16292
tmpfs                              793M     0  793M   0% /run/user/0
/dev/loop7                          56M   56M     0 100% /snap/core18/2538

本文由博客一文多发平台 OpenWrite 发布！