From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932086AbWFYHfk (ORCPT ); Sun, 25 Jun 2006 03:35:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932089AbWFYHfk (ORCPT ); Sun, 25 Jun 2006 03:35:40 -0400 Received: from aa002msr.fastwebnet.it ([85.18.95.65]:36031 "EHLO aa002msr.fastwebnet.it") by vger.kernel.org with ESMTP id S932086AbWFYHfk (ORCPT ); Sun, 25 Jun 2006 03:35:40 -0400 Date: Sun, 25 Jun 2006 09:35:34 +0200 From: Paolo Ornati To: Linux Kernel Mailing List Cc: Jens Axboe , ck@vds.kolivas.org Subject: 2.6.17-ck1: fcache problem... Message-ID: <20060625093534.1700e8b6@localhost> X-Mailer: Sylpheed-Claws 2.3.0 (GTK+ 2.8.17; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello, I'm trying to get fcache (2.6.17-ck1) working on my machine, but it works just once ;) In Gentoo the root fs is remounted rw in "checkroot" init script, so I've done this: --- /etc/init.d/checkroot.orig 2006-06-24 18:47:41.000000000 +0200 +++ /etc/init.d/checkroot 2006-06-25 09:17:52.000000000 +0200 @@ -70,8 +70,10 @@ if mount -vf -o remount / 2> /dev/null | \ awk '{ if ($6 ~ /rw/) exit 0; else exit 1; }' then - ebegin "Remounting root filesystem read/write" - mount -n -o remount,rw / &> /dev/null + ebegin "Remounting root filesystem read/write (FCACHE)" + # try with fcache + mount -n -o remount,rw,fcache_dev=8/10,fcache_prime=0 / &> /dev/null || \ + mount -n -o remount,rw / &> /dev/null if [[ $? -ne 0 ]] ; then eend 2 "Root filesystem could not be mounted read/write :(" if [[ ${RC_FORCE_AUTO} != "yes" ]] ; then 1) priming - it works [ 167.488268] fcache: ios r/w 8304/4747, hits 0, misses 0, overwrites 1217 [ 167.882597] fcache: wrote 8304 extents, holding 347648 sectors of data [ 167.899555] fcache: wrote header (extents=8304,serial=33) "remounting with priming=0" [ 167.905498] fcache: header looks valid (extents=8304 extents, serial=33) [ 167.928273] fcache: loaded 8304 extents [ 167.928320] fcache: sda10 opened successfully (not priming) 2) first boot with priming=0 - it works! Great speedup :) [ 37.845964] fcache: header looks valid (extents=8304 extents, serial=33) [ 37.874101] fcache: loaded 8304 extents [ 37.874105] fcache: sda10 opened successfully (not priming) 3) reboot - it doesn't work anymore :( [ 26.673525] fcache: found serial 33, expected 34. [ 26.673529] fcache: reprime the cache! [ 26.673535] ext3: failed to open fcache (err=-22) I'm doing something wrong? -- Paolo Ornati Linux 2.6.17-ck1 on x86_64