我在笔记本电脑上使用 Arch Linux 发行版，几天前我使用命令运行了更新sudo pacman -Syu。更新执行成功；但是，我收到以下错误，
the volume Filesystem root has only 1.0GB disk space
我运行了该命令df -h并收到了此输出。
Filesystem Size Used Avail Use% Mounted on
dev 7.7G 0 7.7G 0% /dev
run 7.7G 2.1M 7.7G 1% /run
/dev/mapper/volgroup0-lv_root 30G 27G 1.4G 96% /
tmpfs 7.7G 41M 7.7G 1% /dev/shm
tmpfs 7.7G 4.3M 7.7G 1% /tmp
/dev/nvme0n1p2 459M 157M 273M 37% /boot
/dev/mapper/volgroup0-lv_home 908G 63G 799G 8% /home
tmpfs 1.6G 104K 1.6G 1% /run/user/1000
我也运行df -i并收到了这个输出。
Filesystem Inodes IUsed IFree IUse% Mounted on
dev 2004803 790 2004013 1% /dev
run 2010868 1373 2009495 1% /run
/dev/mapper/volgroup0-lv_root 1966080 433229 1532851 23% /
tmpfs 2010868 105 2010763 1% /dev/shm
tmpfs 1048576 58 1048518 1% /tmp
/dev/nvme0n1p2 128016 379 127637 1% /boot
/dev/mapper/volgroup0-lv_home 60481536 340313 60141223 1% /home
tmpfs 402173 148 402025 1% /run/user/1000
我曾考虑过重新安装所有内容并为root目录提供 100GB 空间而不是 30GB；然而，重新安装所有内容的过程将需要几天的时间。相反，我认为最好将内存从一个home卷重新分配到另一个root卷。我必须承认我没有太多重新分配内存的经验。在执行我认为正确的命令之前，我想向可能不比我更好的观众展示我所知道的过程。下面我将我的流程列出来，如果您认为是正确的，或者哪里有缺陷，请告诉我。
1. Backup all data
2. Flash a thumb drive with the most current version of Arch Linux
3. Boot from the thumb drive in live mode
4. Unmount volumes
umount /dev/mapper/volgroup0-lv_home
umount /dev/mapper/volgroup0-lv_root
5. Check for filesystem errors
e2fsck -f /dev/mapper/volgroup0-lv_home
e2fsck -f /dev/mapper/volgroup0-lv_root
6. Shrink the home Filesystem from 799 to 700 GB
resize2fs /dev/mapper/volgroup0-lv_home 700G
7. Reduce the lb_home logical volume
lvreduce -L 700G /dev/mapper/volgroup0-lv_home
8. Extend the lv_root logical volume
lvextend -l +100%FREE /dev/mapper/volgroup0-lv_root
9. Extend the / filesystem
resize2fs /dev/mapper/volgroup0-lv_root
10. Re-mount volumes
mount /dev/mapper/volgroup0-lv_home /home
mount /dev/mapper/volgroup0-lv_root /
11. Verify file systems
df -h