Problem with permissions when sharing a mounted filesystem

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http://unix.stackexchange.com – I am setting up a linux to act as a fileserver, using CentOS 6.3. Since I want to have disk quotas and can't install LVM (it is a 32 bit machine), I am using an LVM volume with ext4 mounted as /samba/seg I have created /samba/seg, assigned a domain group, changed FS permissions to 770, executed: semanage fcontext -a -t samba_share_t /samba/seg restorecon -R -v /samba/seg My config (from testparm): [seg] comment = Remote unit path = /samba/seg valid users = @DOMAIN\GROUP read only = No create mask = 0660 force create mode = 0660 directory (HowTos)