From owner-freebsd-scsi Thu Jun 6 4: 0:58 2002 Delivered-To: freebsd-scsi@freebsd.org Received: from srv1.cosmo-project.de (srv1.cosmo-project.de [213.83.6.106]) by hub.freebsd.org (Postfix) with ESMTP id 6B3AC37B401 for ; Thu, 6 Jun 2002 04:00:54 -0700 (PDT) Received: from cicely5.cicely.de (cicely5.cicely.de [IPv6:3ffe:400:8d0:301:200:92ff:fe9b:20e7]) (authenticated bits=0) by srv1.cosmo-project.de (8.12.3/8.12.3) with ESMTP id g56B0nHc041037 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK); Thu, 6 Jun 2002 13:00:51 +0200 (CEST) (envelope-from ticso@cicely5.cicely.de) Received: from cicely5.cicely.de (localhost [IPv6:::1]) by cicely5.cicely.de (8.12.1/8.12.1) with ESMTP id g56B14SA078154 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Thu, 6 Jun 2002 13:01:04 +0200 (CEST)?g (envelope-from ticso@cicely5.cicely.de) Received: (from ticso@localhost) by cicely5.cicely.de (8.12.1/8.12.1/Submit) id g56B12R0078153; Thu, 6 Jun 2002 13:01:02 +0200 (CEST)?g (envelope-from ticso) Date: Thu, 6 Jun 2002 13:01:02 +0200 From: Bernd Walter To: Joao Pedras Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: sync cache Message-ID: <20020606110101.GU66505@cicely5.cicely.de> Reply-To: ticso@cicely.de References: <3CFEC5F4.2070003@webvolution.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3CFEC5F4.2070003@webvolution.net> User-Agent: Mutt/1.3.26i X-Operating-System: FreeBSD cicely5.cicely.de 5.0-CURRENT i386 Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Wed, Jun 05, 2002 at 07:16:20PM -0700, Joao Pedras wrote: > Greetings all! > > I have a couple of systems with a similar scsi disk sub-system. > > When I shutdown (and only then, since I haven't noticed this in any > other ocasion) I get : > > SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0 > error code 0 > > after the syncing disks stuff. > > Is there a problem here ? The drive did not implement the sync cache command, which is used to flush out the write cache. Unless you have enabled write cache and turn off the machine right after shutting down there is no problem. Normaly only older SCSI-1 drives do not implement the command. > The host controllers are Adaptecs 29160 and they are connected to a > OpenRAID (FlashDisk) from Winchester Systems. Even if they do not need the command they should have implemented it as a nop. Possibly this command is even required in recent SCSI specs. Such a lousy implementation does not create trust in firmware. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message