EXT4 superblock info:

Filesystem volume name:    system
Last mounted on:           
Filesystem UUID:           DA594C53-9BEB-F85C-85C5-CEDF76546F7A
Filesystem magic number:   0xEF53
Filesystem revision:       1 (v2 format/dynamic inode sizes)
FS compatible features:    0x00000018 (EXT_ATTR RESIZE_INODE)
FS incompatible features:  0x00000042 (FILETYPE EXTENTS)
FS read-only features:     0x00000013 (SPARSE_SUPER LARGE_FILE GDT_CSUM)
Filesystem flags:          Unsigned directory hash in use
Default mount options:     0x00000000 (none)
Filesystem state:          Cleanly umounted
Errors behavior:           Remount read-only
Filesystem OS type:        Linux
Inode count:               96192
Block count:               384621
Reserved block count:      0
Free blocks:               29503
Free inodes:               92324
First data block:          0
Block size:                4096
Fragment size:             4096
Reserved GDT blocks:       95
Blocks per group:          32768
Fragments per group:       32768
Inodes per group:          8016
Inode blocks per group:    501
Last mount time:           none
Last write time:           none
Mount count:               0
Maximum mount count:       -1
Last checked:              none
Check interval:            0
Reserved blocks uid:       0 (user unknown)
Reserved blocks gid:       0 (group unknown)
First inode:               11
Inode size:                256
Journal superblock UUID:   00000000-0000-0000-0000-000000000000
Journal inode:             0
Journal device number:     0x00000000
Default directory hash:    Tea.
Directory Hash Seed:       00000000-0000-0000-0000-000000000000
Journal inode backup type: 0x01 (EXT3_JNL_BACKUP_BLOCKS)

Output information about the superblock of system_a.fex finish success