Resize2fs: bad magic number in super block

resize2fs: The magic number in the super block is wrong （Bad magic number in super-block ）

problem ：
lvm Logical volume created , In the use of lvextend After the expansion ,df There will be no change , Usually we need resize2fs Let him readjust
In the use of resize2fs Adjustment times error ：
resize2fs: The magic number in the super block is wrong or Bad magic number in super-block
terms of settlement ：
1、 Use xfs_growfs  command  

2、fsadm resize

The OP stated that he was using the XFS filesystem. The tool resize2fs works with ext2, ext3 and ext4 only.

There's a similar tool available for the XFS filesytem called xfs_growfs. You'll most likely have to install it first