loop2: detected capacity change from 0 to 512
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
EXT4-fs (loop2): ext4_check_descriptors: Block bitmap for group 0 not in group (block 33554432)!
EXT4-fs (loop2): group descriptors corrupted!
loop2: detected capacity change from 0 to 512
EXT4-fs (loop2): ext4_check_descriptors: Block bitmap for group 0 not in group (block 33554432)!
EXT4-fs (loop2): group descriptors corrupted!