unregister_netdevice: waiting for lo to become free. Usage count = 0
loop0: detected capacity change from 0 to 16
EXT4-fs (loop0): failed to parse options in superblock: r
EXT4-fs (loop0): invalid inodes per group: 0

tmpfs: Bad value for 'nr_blocks'
tmpfs: Bad value for 'nr_blocks'
loop0: detected capacity change from 0 to 16
EXT4-fs (loop0): failed to parse options in superblock: r
EXT4-fs (loop0): invalid inodes per group: 0

loop0: detected capacity change from 0 to 16
EXT4-fs (loop0): failed to parse options in superblock: r
EXT4-fs (loop0): invalid inodes per group: 0

loop0: detected capacity change from 0 to 16
EXT4-fs (loop0): failed to parse options in superblock: r
EXT4-fs (loop0): invalid inodes per group: 0

EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 21 (only 16 groups)
EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 21 (only 16 groups)
EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 21 (only 16 groups)
EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 21 (only 16 groups)