在Opensuse中调整/home的大小

Question

我使用Opensuse Tumbleweed并将root partition设置为btrfs，将home分区设置为ext4。我在安装lvm时使用了installation.When，根分区有40 GB，主分区有25 GB空间。未分配大约300 was。现在，由于/home空间不足，我将Linux LVM partition的大小从75 to调整到了187.9GB。我还使用lvextend -L+20GB /dev/system/home扩展了lvm分区，我认为这会给我的主分区增加20 my。fdisk -l的输出显示分区的大小调整如下：

Disk /dev/sda: 477 GiB, 512110190592 bytes, 1000215216 sectors
Disk model: Micron_1100_MTFD
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: 04174A0E-F3C6-459F-A2AB-93E3BED5D4D7

Device      Start       End   Sectors   Size Type
/dev/sda1  411648 394334207 393922560 187.9G Linux LVM
/dev/sda4    2048    411647    409600   200M BIOS boot

Partition table entries are not in disk order.


Disk /dev/mapper/system-root: 40 GiB, 42949672960 bytes, 83886080 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/mapper/system-swap: 7.7 GiB, 8246001664 bytes, 16105472 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/mapper/system-home: 45 GiB, 48318382080 bytes, 94371840 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

df -h输出显示/home目录保持相同大小，如下所示：

Filesystem               Size  Used Avail Use% Mounted on
devtmpfs                 3.9G     0  3.9G   0% /dev
tmpfs                    3.9G   57M  3.8G   2% /dev/shm
tmpfs                    3.9G  1.7M  3.9G   1% /run
tmpfs                    3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/mapper/system-root   40G   14G   27G  34% /
/dev/mapper/system-root   40G   14G   27G  34% /boot/grub2/i386-pc
/dev/mapper/system-root   40G   14G   27G  34% /.snapshots
/dev/mapper/system-root   40G   14G   27G  34% /boot/grub2/x86_64-efi
/dev/mapper/system-root   40G   14G   27G  34% /srv
/dev/mapper/system-root   40G   14G   27G  34% /var
/dev/mapper/system-root   40G   14G   27G  34% /tmp
/dev/mapper/system-root   40G   14G   27G  34% /usr/local
/dev/mapper/system-root   40G   14G   27G  34% /opt
/dev/mapper/system-home   25G   22G  1.7G  94% /home
tmpfs                    786M   16K  786M   1% /run/user/1000

在调整分区大小时，我错过了哪些步骤？为什么更改的大小不影响/home目录？

谢谢

编辑

根据请求，lsblk -f /dev/mapper/system-home的输出：

NAME        FSTYPE LABEL UUID                                 FSAVAIL 

FSUSE% MOUNTPOINT
system-home ext4         9315a4b3-2dde-41ad-8937-20c492304639    1.6G    88% /home

Answer 1

要在扩展LV之后扩展文件系统，应该执行exec命令。

resize2fs /dev/mapper/system-home 

通常可以动态完成(w/o需要卸载文件系统)