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source/_posts/Linux.md

@@ -810,6 +810,135 @@ du -sh /*
 
 ### LVM
 
+#### 旧有卷
+
+将 `/home`部分空间合并至`/`下
+
+```shell
+df -h
+```
+
+![image-20240201162619794](Linux/image-20240201162619794.png)
+
+查看卷的文件系统类型
+
+```shell
+mount |grep home
+```
+
+![image-20240201162720183](Linux/image-20240201162720183.png)
+
+安装`xfsdump`备份工具
+
+```shell
+dnf install -y xfsdump
+```
+
+备份`/home`
+
+```shell
+xfsdump -f ~/sdb_dump/ /home -M sdb_home -L sdb_home_1
+```
+
+卸载`/home`
+
+```shell
+umount /home/
+df -h
+```
+
+![image-20240201162906958](Linux/image-20240201162906958.png)
+
+移除 `/dev/mapper/almalinux-home`(删除前请确保重要文件已备份)
+
+```shell
+lvremove /dev/mapper/almalinux-home
+```
+
+![image-20240201163026019](Linux/image-20240201163026019.png)
+
+```shell
+lsblk
+```
+
+![image-20240201163052988](Linux/image-20240201163052988.png)
+
+扩展`/dev/mapper/almalinux-root`增加8.7G
+
+```shell
+lvresize -L +8.7G /dev/mapper/almalinux-root
+lsblk
+```
+
+![image-20240201163211759](Linux/image-20240201163211759.png)
+
+```shell
+df -h
+```
+
+![image-20240201163229297](Linux/image-20240201163229297.png)
+
+扩展文件系统根目录
+
+```shell
+xfs_growfs /
+```
+
+![image-20240201163300368](Linux/image-20240201163300368.png)
+
+```shell
+df -h
+```
+
+![image-20240201163342757](Linux/image-20240201163342757.png)
+
+重新创建`/dev/mapper/almalinux-home`
+
+```shell
+lvcreate -L 9G -n home almalinux
+lsblk
+```
+
+![image-20240201163506115](Linux/image-20240201163506115.png)
+
+将剩余空闲空间扩展给`/dev/mapper/almalinux-home`
+
+```shell
+lvextend -l +100%FREE -n /dev/mapper/almalinux-home
+lsblk
+```
+
+![image-20240201163544310](Linux/image-20240201163544310.png)
+
+格式化`/dev/mapper/almalinux-home`
+
+```shell
+mkfs.xfs /dev/mapper/almalinux-home
+```
+
+![image-20240201163800217](Linux/image-20240201163800217.png)
+
+挂载
+
+**因为lv名称和挂载点不变，因此无需修改/etc/fstab**
+
+```shell
+mount -a
+df -Th
+```
+
+![image-20240201163826924](Linux/image-20240201163826924.png)
+
+还原
+
+```shell
+xfsrestore -f sdb_dump /home/
+```
+
+![image-20240201163847295](Linux/image-20240201163847295.png)
+
+#### 新加卷
+
 Orale VirtualBox
 
 ![image-20240130093530200](Linux/image-20240130093530200.png)