Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S271796AbTGROLf (ORCPT ); Fri, 18 Jul 2003 10:11:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S271785AbTGROJA (ORCPT ); Fri, 18 Jul 2003 10:09:00 -0400 Received: from werbeagentur-aufwind.com ([217.160.128.76]:23754 "EHLO mail.werbeagentur-aufwind.com") by vger.kernel.org with ESMTP id S271716AbTGROFf (ORCPT ); Fri, 18 Jul 2003 10:05:35 -0400 Subject: RE: Partitioned loop device.. From: Christophe Saout To: "Dimitry V. Ketov" Cc: linux-kernel@vger.kernel.org In-Reply-To: References: Content-Type: multipart/mixed; boundary="=-zFhkVVVgfUFCEL0n0zKV" Message-Id: <1058538027.19986.3.camel@chtephan.cs.pocnet.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.3 Date: 18 Jul 2003 16:20:27 +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3074 Lines: 101 --=-zFhkVVVgfUFCEL0n0zKV Content-Type: text/plain Content-Transfer-Encoding: 7bit Am Di, 2003-07-15 um 20.32 schrieb Dimitry V. Ketov: > > You can already use Device-Mapper to create "partitions" on > > your loop devices, > You're right but I want _partitions_ but not "partitions" ;) > It should appears like a real hardware disk, not virtual one. I just hacked up an ugly small shell script, that uses sfdisk and dmsetup to create the partition devices over any block device. Just dmsetup-partitions /dev/loop0 or something. It will then create devices /dev/mapper/loop0p1, etc... just like hda1 and so on. To remove them use "dmsetup remove loop0p1", etc... -- Christophe Saout Please avoid sending me Word or PowerPoint attachments. See http://www.fsf.org/philosophy/no-word-attachments.html --=-zFhkVVVgfUFCEL0n0zKV Content-Disposition: attachment; filename=dmsetup-partitions Content-Type: text/x-sh; name=dmsetup-partitions; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit #!/bin/sh SFDISK="`which sfdisk`" DMSETUP="`which dmsetup`" if test -z "$1"; then echo "Syntax: $0 " exit 1 fi DEVDIR="`dirname \"\$1\"`" DEVFILE="`basename \"\$1\"`" if ! echo "$DEVDIR" | grep '^/' &> /dev/null; then DEVDIR="`pwd`/$DEVDIR/" else DEVDIR="$DEVDIR/" fi while echo "$DEVDIR" | grep '/\./' &> /dev/null; do DEVDIR="`echo \"\$DEVDIR\" | sed -e 's/\/\.\//\//g'`" done while echo "$DEVDIR" | grep '/[^/][^/]*/\.\./' &> /dev/null; do DEVDIR="`echo \"\$DEVDIR\" | sed -e 's/\/[^/][^/]*\/\.\.\//\//g'`" done DEVICE="$DEVDIR$DEVFILE" if ! test -b "$DEVICE" -a -r "$DEVICE"; then echo "Error: Block device $1 can't be accessed" exit 1 fi if ! test -n "$SFDISK" -a -x "$SFDISK"; then echo "Error: sfdisk utility not found" exit 1 fi if ! test -n "$DMSETUP" -a -x "$DMSETUP"; then echo "Error: dmsetup utility not found" exit 1 fi if test -L "$DEVICE"; then DEVICE_="`readlink \"\$DEVICE\"`" DEVDIR_="`dirname \"\$DEVICE_\"`" DEVFILE_="`basename \"\$DEVICE_\"`" if ! echo "$DEVDIR_" | grep '^/' &> /dev/null; then DEVDIR_="$DEVDIR$DEVDIR_/" else DEVDIR_="$DEVDIR_/" fi while echo "$DEVDIR_" | grep '/\./' &> /dev/null; do DEVDIR_="`echo \"\$DEVDIR_\" | sed -e 's/\/\.\//\//g'`" done while echo "$DEVDIR_" | grep '/[^/][^/]*/\.\./' &> /dev/null; do DEVDIR_="`echo \"\$DEVDIR_\" | sed -e 's/\/[^/][^/]*\/\.\.\//\//g'`" done DEVICE_="$DEVDIR_$DEVFILE_" else DEVICE_="$DEVICE" fi TMP="/tmp/partscript.$$" "$SFDISK" -d "$DEVICE" | grep "^ *$DEVDIR" | sed -e 's/[=,]/ /g' | awk '{ print $1 " " $4 " " $6 }' | \ while read DEV START SIZE; do DEV="`echo \"\$DEV\" | sed -e 's/^\/dev\///' -e 's/\//-/g'`" test "$SIZE" -gt 0 || continue echo $DEV $START $SIZE echo "0 $SIZE linear $DEVICE_ $START" > $TMP "$DMSETUP" create $DEV $TMP done --=-zFhkVVVgfUFCEL0n0zKV-- - 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/