From owner-freebsd-current@FreeBSD.ORG Thu Apr 12 12:55:38 2007 Return-Path: X-Original-To: freebsd-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 3EEA416A400 for ; Thu, 12 Apr 2007 12:55:38 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from relay01.kiev.sovam.com (relay01.kiev.sovam.com [62.64.120.200]) by mx1.freebsd.org (Postfix) with ESMTP id D73E913C468 for ; Thu, 12 Apr 2007 12:55:37 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from [212.82.216.227] (helo=fw.zoral.com.ua) by relay01.kiev.sovam.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.60) (envelope-from ) id 1Hbypp-0006Is-Tk for freebsd-current@freebsd.org; Thu, 12 Apr 2007 15:55:36 +0300 Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by fw.zoral.com.ua (8.13.4/8.13.4) with ESMTP id l3CCtOd0019647 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 12 Apr 2007 15:55:24 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.1/8.14.1) with ESMTP id l3CCtOoU045197; Thu, 12 Apr 2007 15:55:24 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.1/8.14.1/Submit) id l3CCtORD045196; Thu, 12 Apr 2007 15:55:24 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Thu, 12 Apr 2007 15:55:24 +0300 From: Kostik Belousov To: freebsd-current@freebsd.org, ed@fxq.nl, ticso@cicely12.cicely.de Message-ID: <20070412125524.GZ308@deviant.kiev.zoral.com.ua> References: <20070412120341.GE45949@hoeg.nl> <200704121238.l3CCcX9v070904@lurza.secnetix.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="O2g7+miYGsIKoR9l" Content-Disposition: inline In-Reply-To: <200704121238.l3CCcX9v070904@lurza.secnetix.de> User-Agent: Mutt/1.4.2.2i X-Virus-Scanned: ClamAV version 0.88.7, clamav-milter version 0.88.7 on fw.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-0.1 required=5.0 tests=ALL_TRUSTED,SPF_NEUTRAL autolearn=failed version=3.1.8 X-Spam-Checker-Version: SpamAssassin 3.1.8 (2007-02-13) on fw.zoral.com.ua X-Scanner-Signature: a8c813420754d5015e2a5a3aeed75c84 X-DrWeb-checked: yes X-SpamTest-Envelope-From: kostikbel@gmail.com X-SpamTest-Group-ID: 00000000 X-SpamTest-Info: Profiles 949 [Apr 12 2007] X-SpamTest-Info: helo_type=3 X-SpamTest-Info: {received from trusted relay: not dialup} X-SpamTest-Method: none X-SpamTest-Method: Local Lists X-SpamTest-Rate: 0 X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0255], KAS30/Release Cc: 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 12:55:38 -0000 --O2g7+miYGsIKoR9l Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 12, 2007 at 02:38:33PM +0200, Oliver Fromme wrote: > Ed Schouten wrote: > > 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. > >=20 > > There are nicer ways to do that as far as I know. Just read-only > > nullmount some kind of base install to another directory. >=20 > Memory pages are not shared across different mounts, > including nullmounts (AFAIK), which was Bernd's point. > So Bernd's solution is much better in terms of memory > usage, which is significant if you run a large number > of jails. Pages are shared for file mmaped from different null mounts. --O2g7+miYGsIKoR9l Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGHiw7C3+MBN1Mb4gRAgYlAKDWL3q9DS0H0R5Jcze9YB5sEYL3LACgm18F yi+fDpyOB845bLs+mbx/TUU= =FGQZ -----END PGP SIGNATURE----- --O2g7+miYGsIKoR9l--