Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 15 Jul 2001 11:34:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 15 Jul 2001 11:33:55 -0400 Received: from router-100M.swansea.linux.org.uk ([194.168.151.17]:59922 "EHLO the-village.bc.nu") by vger.kernel.org with ESMTP id ; Sun, 15 Jul 2001 11:33:40 -0400 Subject: Re: [PATCH] 64 bit scsi read/write To: cw@f00f.org (Chris Wedgwood) Date: Sun, 15 Jul 2001 16:32:59 +0100 (BST) Cc: phillips@bonn-fries.net (Daniel Phillips), alan@lxorguk.ukuu.org.uk (Alan Cox), andrewm@uow.edu.au (Andrew Morton), adilger@turbolinux.com (Andreas Dilger), acahalan@cs.uml.edu (Albert D. Cahalan), bcrl@redhat.com (Ben LaHaise), kernel@ragnark.vestdata.no (Ragnar Kjxrstad), linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mike@bigstorage.com, kevin@bigstorage.com, linux-lvm@sistina.com In-Reply-To: <20010716023911.A10576@weta.f00f.org> from "Chris Wedgwood" at Jul 16, 2001 02:39:11 AM X-Mailer: ELM [version 2.5 PL3] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > I only have SCSI disks to test with, but they are hot-plug, so I guess > I can write a whole bunch of blocks with different numbers on them, > all over the disk, if I can figure out how to place SCSI barriers and > then pull the drive and see what gives? Another way is to time write block write barrier write same block write barrier repeat If the write barrier is working you should be able to measure the drive rpm 8) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/