LinuxQuestions.org - [SOLVED] ACL doesn't work with groups ?

Hello,

I would like to use ACL to attribute writting rights on a folder, and I meet some difficulties: it works correctly with ACL on a user account but not with ACL on a group?

I run OpenMediaVault (0.5.34), a NAS solution based on Debian (6.0.8).
I'm a Linux newbie but I want learn it!

I've created "movies" folder with "root" account (via ssh), and by default, "users" group has reading rights on it only.
I've created the new group "movies-admin", whose the user account "christopher" is member.

I've added writing rights to "movies-admin" on "movies" folder with ACL:

Code:

root@NAS:/media/UUID/multimedia# setfacl -m g:movies-admin:rwx movies

root@NAS:/media/UUID/multimedia# getfacl movies

# file: movies

# owner: root

# group: users

# flags: -s-

user::rwx

group::r-x

group:movies-admin:rwx

mask::rwx

other::r-x

But I can't write in this folder with "christopher" account!

If I add writing rights directly to "christopher" on "movies" with ACL, I'm able to write in this folder with this account.

Code:

root@NAS:/media/UUID/multimedia# setfacl -m u:christopher:rwx movies

root@NAS:/media/UUID/multimedia# getfacl movies

# file: movies

# owner: root

# group: users

# flags: -s-

user::rwx

user:christopher:rwx

group::r-x

group:movies-admin:rwx

mask::rwx

other::r-x

Thus, why it doesn't work when I apply ACL with the group, and it work when I apply ACL with the account?

Thanks for your help :)
Chris