filefrag

gistfile1.md

Two different files have the same values

# filefrag -v first-snap/etc/passwd
Filesystem type is: 9123683e
File size of first-snap/etc/passwd is 1866 (1 block of 4096 bytes)
 ext:     logical_offset:        physical_offset: length:   expected: flags:
   0:        0..    4095:          0..      4095:   4096:             last,not_aligned,inline,eof
first-snap/etc/passwd: 1 extent found

# filefrag -v first-snap/etc/group
Filesystem type is: 9123683e
File size of first-snap/etc/group is 927 (1 block of 4096 bytes)
 ext:     logical_offset:        physical_offset: length:   expected: flags:
   0:        0..    4095:          0..      4095:   4096:             last,not_aligned,inline,eof
first-snap/etc/group: 1 extent found

Two reflinked files have both "inline" flag

# cp --reflink=always first-snap/etc/passwd .

# filefrag -v passwd first-snap/etc/passwd
Filesystem type is: 9123683e
File size of passwd is 1866 (1 block of 4096 bytes)
 ext:     logical_offset:        physical_offset: length:   expected: flags:
   0:        0..    4095:          0..      4095:   4096:             last,not_aligned,inline,eof
passwd: 1 extent found
Filesystem type is: 9123683e
File size of first-snap/etc/passwd is 1866 (1 block of 4096 bytes)
 ext:     logical_offset:        physical_offset: length:   expected: flags:
   0:        0..    4095:          0..      4095:   4096:             last,not_aligned,inline,eof
first-snap/etc/passwd: 1 extent found