I am trying to resize a logical volume on CentOS7 but am running into the following error:
resize2fs 1.42.9 (28-Dec-2013)
resize2fs: Bad magic number in super-block while trying to open /dev/mapper/centos-root
Couldn’t find valid filesystem superblock(找不到有效的文件系统超级块).
After a bit of trial and error… as mentioned in the possible answers, it turned out to require xfs_growfs rather than resize2fs.
xfs_growfs /dev/centos/root df -h