err-report

Yu Writer Pro markdown error

### 操作步骤

```shell
# 卸载 `/home` 分区 
umount /home
## 已删除中间步骤
# resize2fs -p
 /dev/mapper/VolGroup-LogVol01
# 查看磁盘
df -h 
```

## 报错处理

```shell
resize2fs /dev/centos/root 
resize2fs 1.42.9 (28-Dec-2013)
resize2fs: Bad magic number in super-block while trying to open /dev/centos/root
Couldn't find valid filesystem superblock.
```

这个报错的出现，只会出现在CentOS 7操作系统中。