Ubuntu LVM 扩容记录

df 默认显示 / 目录下只有 98G 可以，但是 lsblk 查看发现有 1022G 未分配

 root@machine:~# df -h
 Filesystem                         Size  Used Avail Use% Mounted on
 tmpfs                              3.2G  1.1M  3.2G   1% /run
 /dev/mapper/ubuntu--vg-ubuntu--lv   98G   21G   73G  23% /
 tmpfs                               16G     0   16G   0% /dev/shm
 tmpfs                              5.0M     0  5.0M   0% /run/lock
 /dev/sda2                          2.0G  254M  1.6G  14% /boot
 tmpfs                              3.2G  4.0K  3.2G   1% /run/user/1000
 root@machine:~# lsblk
 NAME                      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
 sda                         8:0    0    1T  0 disk
 ├─sda1                      8:1    0    1M  0 part
 ├─sda2                      8:2    0    2G  0 part /boot
 └─sda3                      8:3    0 1022G  0 part
   └─ubuntu--vg-ubuntu--lv 253:0    0 1022G  0 lvm  /
 sr0                        11:0    1 1024M  0 rom
/dev/sda2                          2.0G  254M  1.6G  14% /boot

通过 lvextend 扩容后再调用， resize2fs 扩充实际磁盘容量

root@machine:~# lvextend  -l +100%FREE /dev/ubuntu-vg/ubuntu-lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from 100.00 GiB (25600 extents) to <1022.00 GiB (261631 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.
root@machine:~# resize2fs /dev/ubuntu-vg/ubuntu-lv
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/ubuntu-vg/ubuntu-lv is mounted on /; on-line resizing required
old_desc_blocks = 13, new_desc_blocks = 128
The filesystem on /dev/ubuntu-vg/ubuntu-lv is now 267910144 (4k) blocks long.

root@machine:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              3.2G  1.1M  3.2G   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 1006G   21G  943G   3% /
tmpfs                               16G     0   16G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
/dev/sda2                          2.0G  254M  1.6G  14% /boot