[Samba] Samba4 user mapping into filesystem

Aaron E. ssureshot at gmail.com
Thu Feb 9 06:11:44 MST 2012

This may help you out..


On 02/09/2012 07:17 AM, Brantley Hobbs wrote:
> On Wed, Feb 8, 2012 at 5:31 PM, William Brown
> <william.e.brown at adelaide.edu.au>  wrote:
>> You likely don't have ACL's enabled on the filesystem that samba is sharing.
>> You can check with
>> sudo tune2fs -l /dev/vg_lillie/lv_root | grep option
>> replacing your disk into that command. You should see something like
>> Default mount options:    user_xattr acl
>> If not, you should enable the filesystem ACL using tune2fs, then reboot your
>> machine.
>> tune2fs -o acl /dev/sda1
>> And this is why you don't use a mailing list while half asleep. I misread
>> yoru problem. Probably still good to check that.
>> Anyway, do you have the machine joined to its own domain? Are you running
>> winbind to resolve the usernames etc?
>> The issue you might be seeing is that while they have an owner that isn't
>> there, if you use getfacl on the file it should have the ACL's to allow the
>> group / user in question to read/write it. The non existent user could be
>> due to winbind trying to map the user Id to an account, but you don't have
>> the client side of the resolver setup, so it shows "non existant". using ls,
>> check the numerical ID on the files.
> Odd.  I certainly have the mount options in /etc/fstab, and using the
> little test on the HOWTO
> (https://wiki.samba.org/index.php/Samba4/HOWTO#NOTE_about_filesystem_support),
> it's supposed to be working.  However, listing the filesystem options
> with tune2fs shows "none" for "Default mount options".  "ext_attr"
> does show as a feature in "Filesystem features" however.
> To your other questions:
> - I assume that provisioning the installation implicitly joined it to
> the domain.  This is the only domain controller on a very small
> network.  If provisioning didn't join it automatically, then no, it's
> not joined to its own domain.
> - Winbind isn't installed.  I followed the HOWTO, but didn't see a
> step about installing winbind.
> Like I say, everything else appears to be working fine.  I'm just
> trying to wrap my head around the relationship between Samba's
> internal users and the underlying filesystem permissions.
> Thanks for you help!
> Brantley

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