[000] lukeshu@winston:~
$ df .
Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/vda3       98238012 72236341  20754695  78% /
[000] lukeshu@winston:~
$ grep /dev/vda3 /proc/mounts                                                                                          
/dev/vda3 / ext4 rw,relatime,data=ordered 0 0
/dev/vda3 /var/spool/cron ext4 rw,relatime,data=ordered 0 0
[000] lukeshu@winston:~
$ mkdir testdir                                                                                                       
[000] lukeshu@winston:~
$ chgrp repo testdir
[000] lukeshu@winston:~
$ chmod g+s testdir
[000] lukeshu@winston:~
$ stat testdir
  File: testdir
  Size: 1024            Blocks: 2          IO Block: 1024   directory
Device: fe03h/65027d    Inode: 21911569    Links: 2
Access: (2755/drwxr-sr-x)  Uid: ( 1015/ lukeshu)   Gid: (  987/    repo)
Access: 2018-09-26 23:57:41.051436286 +0000
Modify: 2018-09-26 23:57:41.051436286 +0000
Change: 2018-09-26 23:57:55.681473468 +0000
 Birth: -
[000] lukeshu@winston:~
$ getfacl testdir
# file: testdir
# owner: lukeshu
# group: repo
# flags: -s-
user::rwx
group::r-x
other::r-x

[000] lukeshu@winston:~
$ mkdir testdir/subdir
[000] lukeshu@winston:~
$ stat testdir/subdir
  File: testdir/subdir
  Size: 1024            Blocks: 2          IO Block: 1024   directory
Device: fe03h/65027d    Inode: 21911570    Links: 2
Access: (2755/drwxr-sr-x)  Uid: ( 1015/ lukeshu)   Gid: (  987/    repo)
Access: 2018-09-26 23:58:08.851506880 +0000
Modify: 2018-09-26 23:58:08.851506880 +0000
Change: 2018-09-26 23:58:08.851506880 +0000
 Birth: -
[000] lukeshu@winston:~
$ getfacl testdir/subdir
# file: testdir/subdir
# owner: lukeshu
# group: repo
# flags: -s-
user::rwx
group::r-x
other::r-x

[000] lukeshu@winston:~
$ df /srv/repo/main/other/rcn-libre/patches
Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/vda4      392553233 210881441 160722442  57% /srv
[000] lukeshu@winston:~
$ grep /dev/vda4 /proc/mounts                                                                                         
/dev/vda4 /srv ext4 rw,nodev,relatime,data=ordered 0 0
/dev/vda4 /var/lib/mailman ext4 rw,nodev,relatime,data=ordered 0 0
/dev/vda4 /var/lib/postgres ext4 rw,nodev,relatime,data=ordered 0 0
/dev/vda4 /var/lib/mysql ext4 rw,nodev,relatime,data=ordered 0 0
[000] lukeshu@winston:~
$ stat /srv/repo/main/other/rcn-libre/patches
  File: /srv/repo/main/other/rcn-libre/patches
  Size: 7168            Blocks: 16         IO Block: 1024   directory
Device: fe04h/65028d    Inode: 75104358    Links: 246
Access: (2775/drwxrwsr-x)  Uid: (10001/    repo)   Gid: (  987/    repo)
Access: 2018-09-26 23:47:43.639747397 +0000
Modify: 2018-09-26 23:50:03.860196185 +0000
Change: 2018-09-26 23:50:03.860196185 +0000
 Birth: -
[000] lukeshu@winston:~
$ getfacl /srv/repo/main/other/rcn-libre/patches
getfacl: Removing leading '/' from absolute path names
# file: srv/repo/main/other/rcn-libre/patches
# owner: repo
# group: repo
# flags: -s-
user::rwx
group::rwx
other::r-x

[000] lukeshu@winston:~
$ stat /srv/repo/main/other/rcn-libre/patches/testdir                                                                              
stat: cannot stat '/srv/repo/main/other/rcn-libre/patches/testdir': No such file or directory
[001] lukeshu@winston:~
$ mkdir /srv/repo/main/other/rcn-libre/patches/testdir
[000] lukeshu@winston:~
$ stat /srv/repo/main/other/rcn-libre/patches/testdir
  File: /srv/repo/main/other/rcn-libre/patches/testdir
  Size: 1024            Blocks: 2          IO Block: 1024   directory
Device: fe04h/65028d    Inode: 75303719    Links: 2
Access: (0755/drwxr-xr-x)  Uid: ( 1015/ lukeshu)   Gid: (  987/    repo)
Access: 2018-09-26 23:59:38.421732729 +0000
Modify: 2018-09-26 23:59:38.421732729 +0000
Change: 2018-09-26 23:59:38.421732729 +0000
 Birth: -
[000] lukeshu@winston:~
$ getfacl /srv/repo/main/other/rcn-libre/patches/testdir
getfacl: Removing leading '/' from absolute path names
# file: srv/repo/main/other/rcn-libre/patches/testdir
# owner: lukeshu
# group: repo
user::rwx
group::r-x
other::r-x

[000] lukeshu@winston:~
$