samba - Mar 2017 - samba on ZFS

Hi Rowland,

I see this in the ZFS props, if that’s related, you might be referring to
something in ext3 that im not aware of at the moment.

pool/myshare                            aclinherit            restricted        
default
pool/myshare                            acltype               off               
default

So, if you heard that I was going to use ext3, that was only as a solution, and
that over ext4 due personal preference, since I made a mistake once on a reboot
during write and suffered bad data loss.  I gave up on ext4, in favor of ext3
shortly after, and have since, for years.  However, I wanted to mention one
thing, and you may have shed light on part of the issue. There is no Format
other than zfs create, no ext3, I have not made a filesystem on it.  I just went
ahead and straight wrote to it.  I have a post on stack overflow asking this
exact question, if indeed I really need to format a zfs, but I'm not getting
concrete answers yet I think.

Let me know if that helped answer, or else I can do some more digging around for
you on that.

Thanks much.

Brian


-----Original Message-----
From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of Rowland Penny
via samba
Sent: Thursday, February 16, 2017 1:38 AM
To: samba at lists.samba.org
Subject: Re: [Samba] (DeviceIoControl, FSCTL_SET_SPARSE)

On Thu, 16 Feb 2017 01:20:46 -0800
brian lamb via samba <samba at lists.samba.org> wrote:
> Hi David,
> 
> Configured as you mention, and prior with the other tweaks I had in 
> the first place,  Im getting the same results, which is "FSUTIL 
> utility requires a Local NTFS Volume", and mapping it.
> 
On the ZFS machine, are you using 'vfs_zfsacl' ?

On the ext3 (why ext3 not ext4 ?) have you read this:

https://wiki.samba.org/index.php/File_System_Support#ext3

and are you using 'vfs_acl_xattr' ?

Rowland

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On Thu, 16 Feb 2017 01:54:24 -0800
brian lamb via samba <samba at lists.samba.org> wrote:
> Hi Rowland,
> 
> I see this in the ZFS props, if that’s related, you might be
> referring to something in ext3 that im not aware of at the moment.   
> 
> pool/myshare                            aclinherit
> restricted                          default
> pool/myshare                            acltype
> off                                 default
Samba provides a link between Samba and ZFS, see here for the manpage:

https://fossies.org/linux/samba/docs/manpages/vfs_zfsacl.8
> 
> So, if you heard that I was going to use ext3, that was only as a
> solution, and that over ext4 due personal preference, since I made a
> mistake once on a reboot during write and suffered bad data loss.  I
> gave up on ext4, in favor of ext3 shortly after, and have since, for
> years.  
ext4 is basically ext3 with updates and some of the mount options built
in, 'acl' being one of these.
> However, I wanted to mention one thing, and you may have shed
> light on part of the issue. There is no Format other than zfs create,
> no ext3, I have not made a filesystem on it.  I just went ahead and
> straight wrote to it.  I have a post on stack overflow asking this
> exact question, if indeed I really need to format a zfs, but I'm not
> getting concrete answers yet I think.
I have no idea, I do not use ZFS, mainly because you cannot create a
Samba AD DC on it.
  
> 
> Let me know if that helped answer, or else I can do some more digging
> around for you on that. 
I was just trying to make a suggestion of something to try.

Rowland

Am 16.02.2017 um 12:11 schrieb Rowland Penny via samba:
> On Thu, 16 Feb 2017 01:54:24 -0800
> brian lamb via samba <samba at lists.samba.org> wrote:
>
>> Hi Rowland,
>>
>> I see this in the ZFS props, if that’s related, you might be
>> referring to something in ext3 that im not aware of at the moment.
>>
>> pool/myshare         aclinherit     restricted        default
>> pool/myshare         acltype        off               default
>
> Samba provides a link between Samba and ZFS, see here for the manpage:
>
> https://fossies.org/linux/samba/docs/manpages/vfs_zfsacl.8
I am running Samba on ZFS without vfs_zfsacl, but with these zfs options:
- xattr=sa
- acltype=posixacl
- aclinherit=restricted

Samba is currenently 3.6.23-33.el6 from Scientific Linux, running as PDC.

Planning to replace this with 4.5 as AD-DC.
> I do not use ZFS, mainly because you cannot create a Samba AD DC on it.
Does it fail only when ZFS is used as root filesystem, or for SYSVOL, or 
does it not even support ZFS just for shared files?
Not even with "zfs set acltype=posixacl pool/share"?
The root filesystem is ext4.

Klaus