[Samba] (DeviceIoControl, FSCTL_SET_SPARSE)

Rowland Penny rpenny at samba.org
Thu Feb 16 11:11:49 UTC 2017

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:


> 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.


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