Date: Fri, 12 Sep 2014 17:47:27 +0200 From: Simon Toedt <simon.toedt@gmail.com> To: Lionel Cons <lionelcons1972@gmail.com> Cc: Freebsd hackers list <freebsd-hackers@freebsd.org>, Richard Yao <ryao@gentoo.org>, Rick Macklem <rmacklem@uoguelph.ca>, Jordan Hubbard <jkh@ixsystems.com>, Jan Bramkamp <crest@rlwinm.de> Subject: Re: Tool to access ZFS/NFSv4 alternate data streams on FreeBSD? Message-ID: <CAPL6_jSDprYLcORxouncT_ibTrdTaXv8hLyK7RFtj4u8JrWhbQ@mail.gmail.com> In-Reply-To: <CAPJSo4WiZm7peHL7g0C-XbADhWip2q7H5k7=%2BFnm4yzw4EJ0Pw@mail.gmail.com> References: <CAPL6_jR8O4W6Ad_yDR_khJvUV-mgsDW1AM7aWF=K3JTfA9AiYg@mail.gmail.com> <220565922.34288992.1410298180362.JavaMail.root@uoguelph.ca> <CAPJSo4WiZm7peHL7g0C-XbADhWip2q7H5k7=%2BFnm4yzw4EJ0Pw@mail.gmail.com>
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On Fri, Sep 12, 2014 at 2:24 AM, Lionel Cons <lionelcons1972@gmail.com> wro= te: > On 9 September 2014 23:29, Rick Macklem <rmacklem@uoguelph.ca> wrote: >> Simon Toedt wrote: >>> On Tue, Sep 9, 2014 at 1:47 PM, Rick Macklem <rmacklem@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=E2= =80=99s >>> >> backing them up / copying them around that gets more involved, and >>> >> if you can=E2=80=99t back up certain attributes then you=E2=80=99re = not likely to >>> >> get anyone to want to use them, at which point the whole =E2=80=9Csh= aring=E2=80=9D >>> >> 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 the= ir >> 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
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