Date: Fri, 07 Nov 2008 15:37:18 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-arch@freebsd.org Subject: Re: Directory rename semantics. Message-ID: <gf1jqq$kti$1@ger.gmane.org> In-Reply-To: <20081107123259.GC34757@submonkey.net> References: <20081027193545.GA95872@pin.if.uz.zgora.pl> <20081028161855.GA45129@zim.MIT.EDU> <20081106192829.GA98742@pin.if.uz.zgora.pl> <20081106195558.GG2281@submonkey.net> <gf168k$48o$1@ger.gmane.org> <20081107123259.GC34757@submonkey.net>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigED0D2EDD547B049C2EE41C14 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Ceri Davies wrote: > On Fri, Nov 07, 2008 at 11:44:27AM +0100, Ivan Voras wrote: >> Ceri Davies wrote: >>> On Thu, Nov 06, 2008 at 08:28:29PM +0100, Edward Tomasz Napierala wro= te: >>>> After discussion about this with rwatson and pjd, I decided to do >>>> the opposite: change ZFS behaviour to match UFS. Reason is simple: >>>> this is security, and we want to be conservative here. It's impossi= ble >>>> to make sure this change wouldn't cause security problems. >>> Perhaps it would have been better to either do nothing or create a zf= s >>> property that toggled this behaviour so that people who expect ZFS to= >>> behave a certain way get it. I'm not sure why we would want all >>> filesystems to behave the same way, to be honest. >> That would be desirable if we want file system semantics to be a >> property of the OS instead of individual file systems. (Though I don't= >> know if there's ever been a conscious decision about this particular >> goal). If so, a knob that toggles between the behaviours should toggle= >> it for all file systems. Having them behave differently can create >> problems in migration to and from ZFS. >=20 > That's essentially what has just happened, but without the knob. >=20 > I'm not really sure whether you agree with the change that was made or > not. I agree with the aspect of the change that unified the semantics on UFS and ZFS. I hope somebody comes up with a knob that would toggle it for both systems at the same time, if the alternate behaviour is useful to people. --------------enigED0D2EDD547B049C2EE41C14 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJFFKeldnAQVacBcgRAjf8AKDZVg5HvQR9ahY54shV+GHJ2oTfLACeKa6H hF5WzvySx+vxDEcxvCsbkaw= =uiOo -----END PGP SIGNATURE----- --------------enigED0D2EDD547B049C2EE41C14--
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