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Date:      Sat, 19 Oct 2002 13:14:43 -0400 (EDT)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/alpha/conf GENERIC src/sys/i386/conf GENERIC         src/sys/ia64/conf GENERIC src/sys/pc98/conf GENERIC         src/sys/powerpc/conf GENERIC src/sys/sparc64/conf GENERIC
Message-ID:  <Pine.NEB.3.96L.1021019131238.83141A-100000@fledge.watson.org>
In-Reply-To: <200210191654.g9JGsHDD062383@repoman.freebsd.org>

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On Sat, 19 Oct 2002, Robert Watson wrote:

>   Permits UFS ACLs to be used with the GENERIC kernel.  Due to recent
>   ACL configuration changes, this shouldn't result in different code
> paths
>   for file systems not explicitly configured for ACLs by the system
>   administrator.  For UFS1, administrators must still recompile their
>   kernel to add support for extended attributes; for UFS2, it's
> sufficient
>   to enable ACLs using tunefs or at mount-time (tunefs preferred for
>   reliability reasons).  UFS2, for a variety of reasons, including
>   performance and reliability, is the preferred file system for use with
>   ACLs. 

The upshot of this is that to use ACLs with UFS1, you still do need to
make a very explicit kernel reconfiguration choice, but if you use the
slightly more experimental UFS2, they will "just work" once you twiddle
the tunefs admin knob for the file system.  ACLs have received fairly
extensive testing, and due to the recent changes, you really shouldn't
bump into the ACL code paths at all with this change unless the mount flag
is set; if you notice any problems at all, please let me know ASAP.

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Network Associates Laboratories



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