test.img contains a xfs file system labelled 'test_filsys'
*** debugfs
debugfs: Bad magic number in super-block while trying to open test.img
-Checksum errors in superblock! Retrying...
test.img contains a xfs file system labelled 'test_filsys'
*** tune2fs
../misc/tune2fs: Bad magic number in super-block while trying to open test.img