From owner-freebsd-fs@FreeBSD.ORG Thu Apr 19 14:57:32 2007 Return-Path: X-Original-To: fs@freebsd.org Delivered-To: freebsd-fs@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1058B16A401 for ; Thu, 19 Apr 2007 14:57:32 +0000 (UTC) (envelope-from brooks@lor.one-eyed-alien.net) Received: from lor.one-eyed-alien.net (grnl-static-02-0046.dsl.iowatelecom.net [69.66.56.110]) by mx1.freebsd.org (Postfix) with ESMTP id 5C12F13C459 for ; Thu, 19 Apr 2007 14:57:31 +0000 (UTC) (envelope-from brooks@lor.one-eyed-alien.net) Received: from lor.one-eyed-alien.net (localhost [127.0.0.1]) by lor.one-eyed-alien.net (8.13.8/8.13.8) with ESMTP id l3JENRPc074849; Thu, 19 Apr 2007 09:23:27 -0500 (CDT) (envelope-from brooks@lor.one-eyed-alien.net) Received: (from brooks@localhost) by lor.one-eyed-alien.net (8.13.8/8.13.8/Submit) id l3JENQbw074848; Thu, 19 Apr 2007 09:23:26 -0500 (CDT) (envelope-from brooks) Date: Thu, 19 Apr 2007 09:23:26 -0500 From: Brooks Davis To: Howard Su Message-ID: <20070419142326.GB74693@lor.one-eyed-alien.net> References: <4626EA38.6010703@nokia.com> <4626F339.5040602@nokia.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="RASg3xLB4tUQ4RcS" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (lor.one-eyed-alien.net [127.0.0.1]); Thu, 19 Apr 2007 09:23:27 -0500 (CDT) Cc: Glen , fs@freebsd.org Subject: Re: handle special file type in tmpfs X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Apr 2007 14:57:32 -0000 --RASg3xLB4tUQ4RcS Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Apr 19, 2007 at 01:02:25AM -0700, Howard Su wrote: > >Glen wrote: > >> * Quota support, ACL work is pending > Do we really need this? What's user scenerio to use Quota or ACL for a > TMPFS? I can be conveienced. Extended attribute support would be useful on systems that use MAC so you wouldn't lose labels when copying files to the tmpfs (not having this might preclude use). Quotas a very useful on /tmp as a way to keep individual users from DoSing the system. I've had it happen by accident on my cluster where users wrote temporary files and didn't clean them up. At some point they totally ran the volume out of space and as a result PVM and MPI would fail very strangly when they couldn't create various files then needed. Having argued for these features, I don't believe either is critical. For most application neither is needed, but they would be useful in some cases. -- Brooks --RASg3xLB4tUQ4RcS Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD4DBQFGJ3teXY6L6fI4GtQRAgStAJkBUt8AXtha9qnRIDcvIbsy/2t+4ACWNWzH B/nd2QZAcRQ76535qcMqZQ== =eu9D -----END PGP SIGNATURE----- --RASg3xLB4tUQ4RcS--