Tool to access ZFS/NFSv4 alternate data streams on FreeBSD?

[Simon Toedt]

On Mon, Sep 15, 2014 at 12:17 PM, Lionel Cons <lionelcons1972 at gmail.com> wrote:
> On 12 September 2014 17:47, Simon Toedt <simon.toedt at gmail.com> wrote:
>> On Fri, Sep 12, 2014 at 2:24 AM, Lionel Cons <lionelcons1972 at gmail.com> wrote:
>>> On 9 September 2014 23:29, Rick Macklem <rmacklem at uoguelph.ca> wrote:
>>>> Simon Toedt wrote:
>>>>> On Tue, Sep 9, 2014 at 1:47 PM, Rick Macklem <rmacklem at uoguelph.ca>
>>>>> wrote:
>>>>> > Jordan Hubbard wrote:
>>>>> >> Yep.  I was just describing the experience that OS X went through
>>>>> >> in
>>>>> >> implementing extattrs / legacy resource fork support.  To recap it
>>>>> >> very briefly:  Having NFSv4 support extattrs (or even named
>>>>> >> streams,
>>>>> >> if you want to go that far) is the comparatively easy part.  It’s
>>>>> >> backing them up / copying them around that gets more involved, and
>>>>> >> if you can’t back up certain attributes then you’re not likely to
>>>>> >> get anyone to want to use them, at which point the whole “sharing”
>>>>> >> aspect kind of takes a back seat.
>>>>> >>
>>>>> > Yep. I strongly suspect you are correct.
>>>>> >
>>>>> > The question then becomes:
>>>>> > - Do we wait and see if someone chooses to get around to doing all
>>>>> >   the hard userland work.
>>>>>
>>>>> Solaris tools already have support for this. Also AT&T AST from David
>>>>> Korn have support for O_XATTR, too.
>>>>>
>>>> Hopefully others will correct me if I have this incorrect, but I thought
>>>> CDDL code could only be used for optional components of FreeBSD?
>>>> I suspect tar and friends are considered core components and that code
>>>> for this would have to be written by someone (ie. couldn't use CDDL code?).
>>>> (I'm assuming that these tools are in OpenSolaris.)
>>>
>>> I don't think you FreeBSD should *copy* the code. But it can be used
>>> for reference how the extended tar headers for filesystem forks should
>>> look like. That's all.
>>>
>>>>
>>>> Be aware that most of FreeBSD's development is done by volunteers in their
>>>> spare time, so I have no idea if someone is interested in doing this.
>>>
>>> If anyone can get the kernel parts I think we can sponsor someone to
>>> do the userland work.
>>
>> How much money would CERN offer? :)
>>
>> Simon
>
> Depends. First I need to have more support (2nd funding pillar) and
> then write a proposal. Short: Paperwork. Long: More paperwork.
> But given the number of projects here which rely on O_XATTR there
> isn't a way around it so funding should be easy to obtain.

Our institute volunteers for testing!

is there a task or todo list yet?

Simon