From owner-freebsd-bugs@FreeBSD.ORG Thu Mar 22 07:29:28 2007 Return-Path: X-Original-To: freebsd-bugs@FreeBSD.org Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E395F16A401; Thu, 22 Mar 2007 07:29:28 +0000 (UTC) (envelope-from estartu@etustar.ze.tum.de) Received: from titan.ze.tum.de (titan.ze.tum.de [129.187.39.12]) by mx1.freebsd.org (Postfix) with ESMTP id 5EA4B13C48C; Thu, 22 Mar 2007 07:29:28 +0000 (UTC) (envelope-from estartu@etustar.ze.tum.de) Received: from etustar.ze.tum.de (etustar.ze.tum.de [129.187.39.96]) by titan.ze.tum.de (8.13.4/8.12.10) with ESMTP id l2M6vA5n087018; Thu, 22 Mar 2007 07:57:10 +0100 (CET) (envelope-from estartu@etustar.ze.tum.de) Received: from etustar.ze.tum.de (localhost [127.0.0.1]) by etustar.ze.tum.de (8.13.8/8.13.6) with ESMTP id l2M6vHu0028991; Thu, 22 Mar 2007 07:57:17 +0100 (CET) (envelope-from estartu@etustar.ze.tum.de) Received: (from estartu@localhost) by etustar.ze.tum.de (8.13.8/8.13.6/Submit) id l2M6vHZJ028990; Thu, 22 Mar 2007 07:57:17 +0100 (CET) (envelope-from estartu) Date: Thu, 22 Mar 2007 07:57:17 +0100 From: Gerhard Schmidt To: Hidetoshi Shimokawa Message-ID: <20070322065717.GA28832@augusta.de> References: <200703220248.l2M2mR7u020054@freefall.freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="3V7upXqbjpZ4EhLz" Content-Disposition: inline In-Reply-To: <200703220248.l2M2mR7u020054@freefall.freebsd.org> User-Agent: Mutt/1.4.2.2i Cc: freebsd-bugs@FreeBSD.org Subject: Re: kern/93083: [firewire] Detach of Firewire Harddisk not recognied properly X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Mar 2007 07:29:29 -0000 --3V7upXqbjpZ4EhLz Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Mar 22, 2007 at 02:48:27AM +0000, Hidetoshi Shimokawa wrote: > Synopsis: [firewire] Detach of Firewire Harddisk not recognied properly >=20 > State-Changed-From-To: open->feedback > State-Changed-By: simokawa > State-Changed-When: Thu Mar 22 02:47:51 UTC 2007 > State-Changed-Why:=20 > USB has always tree structures and any devices except hubs > are leaves of the tree. This means that you can remove any device without > disconnecting any other devices. > On the other hand, ieee1394 allows daisy chains and you may sometimes > want to remove a device between the host and a leaf device which is > mounted on the host. The current default setting allow to remove physical= ly > such intermediate nodes without unmounting filesystems. =46rom my personal expirience that doesn't work. I had 3 external harddrive= s=20 connected via FW.=20 drive1 <-> host <-> drive2 <-> drive3=20 Disconnecting drive1 and drive3 while drive2 is mounted worked sometimes=20 (couldn't figure out what makes it fail)=20 umounting and powering down drive2 (without physicaly disconnecting) causes a panik when drive3 is mounted.=20 The only secure way to disconnect any drive at the moment is to unmount=20 any fw disk, disconnect the drive and remount the others. Everything=20 else worked sometimes but most time the system crashed.=20 As it seams to me that a busreset is triggerd by any disconnect or powerchange and this causes a renumbering of the devices and leads=20 to the crash.=20 At the moment i have ext Harddisk and a DVD-Writer with firewire and a=20 notebook with FreeBSD 6.2 and firewire. I can help you with testing.=20 Greeting=20 Estartu --=20 ---------------------------------------------------------------------------- Gerhard Schmidt | Nick : estartu IRC : Estartu | Fischbachweg 3 | | PGP Public Key 86856 Hiltenfingen | EMail: estartu@augusta.de | on request=20 Germany | | =20 --3V7upXqbjpZ4EhLz Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iQCVAwUBRgIozQzx22nOTJQRAQLYiAP/V/lpFTte4rIiI6l/rRlVZKp8yVZ6TxdN a82/duasCnreNCAkKMEy7wFBl6FWHsptY3yMJ9xY86hjwOeKzZ2ATbIwcc2JJUJk TzVWAmij54cPvSq+KbI1XcaIN3Si0nT54aRNjl5a6CI32rWoi9lK2ZZt15NIsYRJ iWA292WljvE= =cOOh -----END PGP SIGNATURE----- --3V7upXqbjpZ4EhLz--