Darren J Moffat <Darren.Moffat at Sun.COM> wrote:

> Torrey McMahon wrote:
> > I'm lost as well. Is the issue...
> > 
> > Why is anyone updating tar at all?
>
> Because tar needs to backup your ACLs.

This is no reason for doing it in a nonportable and deprecated way.

 
> > Why did someone put ZFS acl support in tar?
>
> They didn't they put NFSv4/ZFS acl support in to tar.
>
> > Why wasn't it documented?
>
> It is documented, very clearly on the acl(2) man page how this
> works and in several other man pages that work on ACLs.

Sorry, this is defintely wrong:

star implements a well documented, portable and POSIX.1-2001 clean
ACL implementation for POSIX draft ACLs that suppoorts various
filesystem types.

Sun used an undocumented, non-portable and deprecated method for
archiving UFS ACLs.

The ZFS team did know about the background before implementing ZFS
ACL support for Sun tar in the same undocumented, nonportable and
deprecated way as done for UFS ACLs.


J?rg

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