From owner-freebsd-stable@FreeBSD.ORG Sat Aug 4 10:19:54 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5CA4E16A419 for ; Sat, 4 Aug 2007 10:19:54 +0000 (UTC) (envelope-from peter.schuller@infidyne.com) Received: from proxy2.bredband.net (proxy2.bredband.net [195.54.101.72]) by mx1.freebsd.org (Postfix) with ESMTP id 39F5413C457 for ; Sat, 4 Aug 2007 10:19:54 +0000 (UTC) (envelope-from peter.schuller@infidyne.com) Received: from prometheus.scode.org (85.229.22.84) by proxy2.bredband.net (7.3.127) id 46A88258002C9F9A for freebsd-stable@freebsd.org; Sat, 4 Aug 2007 11:59:51 +0200 Received: from localhost (localhost [127.0.0.1]) by prometheus.scode.org (Postfix) with ESMTP id A75DB1CC8E for ; Sat, 4 Aug 2007 13:59:53 +0200 (CEST) From: Peter Schuller To: freebsd-stable@freebsd.org Date: Sat, 4 Aug 2007 13:59:53 +0200 User-Agent: KMail/1.9.7 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708041359.53246.peter.schuller@infidyne.com> Subject: sas 5/i and mpt: hw.mpt.enable_sata_wc=1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 Aug 2007 10:19:54 -0000 Hello, As per: http://lists.freebsd.org/pipermail/freebsd-stable/2007-July/036266.html The hw.mpt.enable_sata_wc sysctl will enable write caching on SATA drives with the mpt driver. My question is, will explicit requests to flush the cache, such as those made by ZFS, still propagate to the drives? -- / Peter Schuller PGP userID: 0xE9758B7D or 'Peter Schuller ' Key retrieval: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org