root@s1:~# ls -la /var/lib/ceph/osd/ceph-0/current/2.7*
/var/lib/ceph/osd/ceph-0/current/2.72_head:
total 8
drwxr-xr-x  2 root root   31 Apr 24 14:48 .
drwxr-xr-x 90 root root 4096 Apr 27 20:00 ..
-rw-r--r--  1 root root    0 Apr 24 14:48 __head_00000072__2

/var/lib/ceph/osd/ceph-0/current/2.78_head:
total 8
drwxr-xr-x  2 root root   31 Apr 23 15:54 .
drwxr-xr-x 90 root root 4096 Apr 27 20:00 ..
-rw-r--r--  1 root root    0 Apr 23 15:54 __head_00000078__2

/var/lib/ceph/osd/ceph-0/current/2.7c_head:
total 8
drwxr-xr-x  2 root root   31 Apr 23 15:54 .
drwxr-xr-x 90 root root 4096 Apr 27 20:00 ..
-rw-r--r--  1 root root    0 Apr 23 15:54 __head_0000007C__2

/var/lib/ceph/osd/ceph-0/current/2.7_head:
total 8
drwxr-xr-x  2 root root   31 Apr 24 14:48 .
drwxr-xr-x 90 root root 4096 Apr 27 20:00 ..
-rw-r--r--  1 root root    0 Apr 24 14:48 __head_00000007__2

root@h1:~# ls -la /var/lib/ceph/osd/ceph-10/current/2.73*
total 0
drwxr-xr-x 1 root root  36 Apr 20 00:12 .
drwxr-xr-x 1 root root 844 Apr 27 19:31 ..
-rw-r--r-- 1 root root   0 Apr 20 00:12 __head_00000073__2