From owner-freebsd-current@FreeBSD.ORG Thu Apr 12 12:03:42 2007 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E6EBF16A4CB for ; Thu, 12 Apr 2007 12:03:42 +0000 (UTC) (envelope-from ed@hoeg.nl) Received: from palm.hoeg.nl (mx0.hoeg.nl [83.98.131.211]) by mx1.freebsd.org (Postfix) with ESMTP id AD98E13C468 for ; Thu, 12 Apr 2007 12:03:42 +0000 (UTC) (envelope-from ed@hoeg.nl) Received: by palm.hoeg.nl (Postfix, from userid 1000) id B6DE51CC23; Thu, 12 Apr 2007 14:03:41 +0200 (CEST) Date: Thu, 12 Apr 2007 14:03:41 +0200 From: Ed Schouten To: ticso@cicely.de Message-ID: <20070412120341.GE45949@hoeg.nl> References: <200704112004.03903.lists@jnielsen.net> <20070412021645.GQ30772@cicely12.cicely.de> <20070412114135.C64803@fledge.watson.org> <20070412112045.GR30772@cicely12.cicely.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="a+b56+3nqLzpiR9O" Content-Disposition: inline In-Reply-To: <20070412112045.GR30772@cicely12.cicely.de> User-Agent: Mutt/1.5.15 (2007-04-06) Cc: current@FreeBSD.org Subject: Re: ZFS to support chflags? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Apr 2007 12:03:43 -0000 --a+b56+3nqLzpiR9O Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Bernd Walter wrote: > E.g. hardlink system binaries over multiple jails flaged immuteable. > No jail can compromise the data in other jails, while still allowing > the kernel to share memory pages for it. There are nicer ways to do that as far as I know. Just read-only nullmount some kind of base install to another directory. Union mount another directory on top that holds jail specific data. That way you have a `copy-on-write' FreeBSD install. Make sure you mount everything with noatime. --=20 Ed Schouten WWW: http://g-rave.nl/ --a+b56+3nqLzpiR9O Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGHiAd52SDGA2eCwURAteIAJ468p56W9BEb+c2Ks++dQf4SAC5xACbBE14 x/ZLQFiC43rGvRdE2Succ0c= =9gP/ -----END PGP SIGNATURE----- --a+b56+3nqLzpiR9O--