samba - Mar 2019 - Enable XAT_OFFLINE extended attribute in Samba

On Mon, 4 Mar 2019 10:25:59 -0800
Jeremy Allison via samba <samba at lists.samba.org> wrote:
> On Mon, Mar 04, 2019 at 04:48:56PM +0100, Andrea Cucciarre' via samba
> wrote:
> > Hello,
> > 
> > Does Samba support XAT_OFFLINE and XAT_ONLINE extended attribute?
> > I have enabled "ea support = yes" but it seems to have no
effect on
> > that.
> 
> Googling for XAT_OFFLINE or XAT_ONLINE doesn't return anything.
Yeh, my Googlefu is better than somebody who works for Google ;-)

It seems to be something to do with ZFS on illumos:

https://github.com/openzfs/openzfs/blob/master/usr/src/uts/common/fs/xattr.c

Rowland
> 
> Do you mean the Windows FILE_ATTRIBUTE_OFFLINE attribute ?
> 
> If so, yes, we support that if the server is using dmapi.
>

On Mon, Mar 04, 2019 at 06:39:21PM +0000, Rowland Penny
wrote:
> On Mon, 4 Mar 2019 10:25:59 -0800
> Jeremy Allison via samba <samba at lists.samba.org> wrote:
> 
> > On Mon, Mar 04, 2019 at 04:48:56PM +0100, Andrea Cucciarre' via
samba
> > wrote:
> > > Hello,
> > > 
> > > Does Samba support XAT_OFFLINE and XAT_ONLINE extended attribute?
> > > I have enabled "ea support = yes" but it seems to have
no effect on
> > > that.
> > 
> > Googling for XAT_OFFLINE or XAT_ONLINE doesn't return anything.
> 
> Yeh, my Googlefu is better than somebody who works for Google ;-)
Oh the shame, the shame :-). Having said that I am at
a conference and really should be paying attention to the
lectures :-).
> It seems to be something to do with ZFS on illumos:
> 
>
https://github.com/openzfs/openzfs/blob/master/usr/src/uts/common/fs/xattr.c
Thnaks Rowland, I'll take a look !

My goal is to use the Offline file attribute of Windows when sharing 
with Samba:

https://docs.microsoft.com/en-us/dotnet/api/system.io.fileattributes?redirectedfrom=MSDN&view=netframework-4.7.2

It works when I share ZFS filesystem using the native ZFS CIFS sharing, 
but it fails when I share the same ZFS with Samba, that is the Offline 
files are not showed in Windows Client


Il 3/4/2019 8:06 PM, Jeremy Allison via samba ha
scritto:
> On Mon, Mar 04, 2019 at 06:39:21PM +0000, Rowland Penny wrote:
>> On Mon, 4 Mar 2019 10:25:59 -0800
>> Jeremy Allison via samba <samba at lists.samba.org> wrote:
>>
>>> On Mon, Mar 04, 2019 at 04:48:56PM +0100, Andrea Cucciarre' via
samba
>>> wrote:
>>>> Hello,
>>>>
>>>> Does Samba support XAT_OFFLINE and XAT_ONLINE extended
attribute?
>>>> I have enabled "ea support = yes" but it seems to
have no effect on
>>>> that.
>>> Googling for XAT_OFFLINE or XAT_ONLINE doesn't return anything.
>> Yeh, my Googlefu is better than somebody who works for Google ;-)
> Oh the shame, the shame :-). Having said that I am at
> a conference and really should be paying attention to the
> lectures :-).
>
>> It seems to be something to do with ZFS on illumos:
>>
>>
https://github.com/openzfs/openzfs/blob/master/usr/src/uts/common/fs/xattr.c
> Thnaks Rowland, I'll take a look !
>