[ceph-users] cephfs snap mkdir strange timestamp

If I make a directory in linux the directory has the date of now, why is this not with creating a snap dir? Is this not a bug? One expects this to be the same as in linux not???? [ @ test]$ mkdir temp [ @os0 test]$ ls -arltn total 28 drwxrwxrwt. 27 0 0 20480 Mar 10 11:38 .. drwxrwxr-x 2 801 801 4096 Mar 10 11:38 temp drwxrwxr-x 3 801 801 4096 Mar 10 11:38 . [ @ .snap]# mkdir test [ @ .snap]# ls -lartn total 0 drwxr-xr-x 861886554 0 0 8390344070786420358 Jan 1 1970 . drwxr-xr-x 4 0 0 2 Mar 6 14:43 test drwxr-xr-x 4 0 0 2 Mar 6 14:43 snap-9 drwxr-xr-x 4 0 0 2 Mar 6 14:43 snap-8 drwxr-xr-x 4 0 0 2 Mar 6 14:43 snap-7 drwxr-xr-x 4 0 0 2 Mar 6 14:43 snap-6 drwxr-xr-x 4 0 0 2 Mar 6 14:43 snap-5 drwxr-xr-x 4 0 0 2 Mar 6 14:43 snap-10 drwxr-xr-x 4 0 0 2 Mar 6 14:43 ..