livecd May 2010

livecd@lists.fedoraproject.org

26 participants
35 discussions

auto-biarch (x86_64 + i686) LiveDVD patch + ISO
by Jan Kratochvil 01 Jan '11

01 Jan '11

Hi, finally created a LiveDVD ISO automatically booting x86_64 OS on x86_64 (and i686 otherwise). Regular users will not notice there exists any new arch while they will benefit from the full performance of their PC: http://people.redhat.com/jkratoch/x86bilive-2009062000.tar.gz (71KB) It uses live_dir=LiveOS-x86_64 vs. live_dir=LiveOS-i686 to boot the image. The syslinux patch provides "default-{x86_64,i386}" keywords in isolinux.cfg. livecd-iso-to-disk is not patched/compatible with such image. livecd-creator should create such ISO on a single run, not by merging the output of two livecd-creator runs by a 3rd party app. Regards, Jan Reasons: * I still did not understand why I have to carry with me two media - both x86_64 and i386 - when all the data perfectly fit on a single media. * Why I have to try to boot x86_64 first to find out if the specific machine is x86_64? Even common programmers do not know it, "Windows XP works here". * The OS must "just work", it must be fun and easy. Requiring a special technical decision before even starting the OS download is a showstopper. * Checked that a regular user will on http://fedoraproject.org/get-fedora still download terrible performance degradation of 32-bit OS although her hadware is in 70%-95%(?) of cases x86_64. x86_64 is here for 6 years now. * Arguing x86 may be faster than x86_64... I did not find any such case, x86_64 is a more modern arch (more registers, PIC for free, better ABI). We already hit the 2GB address space limitations. x86_64 is the future. * All the friends of mine have 8Mbit+ ADSL and TB disks downloading many DVD disks so some several more hundreds of MB are not something to notice. mkisofs -f -J -r -hide-rr-moved -hide-joliet-trans-tbl -V Fedora-11-x86bi-Live -o ../x86bilive.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-info-table -boot-load-size 4 . mount -r -o loop Fedora-11-x86_64-Live.iso x86_64/ mount -r -o loop Fedora-11-i686-Live.iso i686/ x86bilive: total 4 lrwxrwxrwx 1 root root 13 2009-06-18 21:10 GPL -> ../x86_64/GPL lrwxrwxrwx 1 root root 14 2009-06-18 21:11 LiveOS-i686 -> ../i686/LiveOS/ lrwxrwxrwx 1 root root 16 2009-06-18 21:10 LiveOS-x86_64 -> ../x86_64/LiveOS/ lrwxrwxrwx 1 root root 16 2009-06-18 21:10 README -> ../x86_64/README drwxr-xr-x 2 root root 4096 2009-06-20 21:44 isolinux/ x86bilive/isolinux: total 184 lrwxrwxrwx 1 root root 30 2009-06-18 21:13 boot.cat -> ../../x86_64/isolinux/boot.cat lrwxrwxrwx 1 root root 31 2009-06-18 21:17 ii686 -> ../../i686/isolinux/initrd0.img -rw-r--r-- 1 root root 14336 2009-06-20 21:45 isolinux.bin -r--r--r-- 1 root root 1411 2009-06-20 21:44 isolinux.cfg lrwxrwxrwx 1 root root 33 2009-06-18 21:13 ix8664 -> ../../x86_64/isolinux/initrd0.img lrwxrwxrwx 1 root root 28 2009-06-18 21:17 ki686 -> ../../i686/isolinux/vmlinuz0 lrwxrwxrwx 1 root root 30 2009-06-18 21:13 kx8664 -> ../../x86_64/isolinux/vmlinuz0 lrwxrwxrwx 1 root root 29 2009-06-18 21:13 memtest -> ../../x86_64/isolinux/memtest lrwxrwxrwx 1 root root 32 2009-06-18 21:13 splash.jpg -> ../../x86_64/isolinux/splash.jpg -r--r--r-- 1 root root 159888 2009-06-20 20:48 vesamenu.c32 isolinux.cfg: default vesamenu.c32 timeout 100 menu background splash.jpg menu title Welcome to Fedora-11-x86bi-Live! menu color border 0 #ffffffff #00000000 menu color sel 7 #ffffffff #ff000000 menu color title 0 #ffffffff #00000000 menu color tabmsg 0 #ffffffff #00000000 menu color unsel 0 #ffffffff #00000000 menu color hotsel 0 #ff000000 #ffffffff menu color hotkey 7 #ffffffff #ff000000 menu color timeout_msg 0 #ffffffff #00000000 menu color timeout 0 #ffffffff #00000000 menu color cmdline 0 #ffffffff #00000000 menu hidden menu hiddenrow 5 label linux0 menu label x86_64 Boot kernel kx8664 append initrd=ix8664 root=CDLABEL=Fedora-11-x86bi-Live rootfstype=auto live_dir=LiveOS-x86_64 ro liveimg quiet rhgb menu default-x86_64 label check0 menu label x86_64 Verify and Boot kernel kx8664 append initrd=ix8664 root=CDLABEL=Fedora-11-x86bi-Live rootfstype=auto live_dir=LiveOS-x86_64 ro liveimg quiet rhgb check label linux1 menu label i686 Boot kernel ki686 append initrd=ii686 root=CDLABEL=Fedora-11-x86bi-Live rootfstype=auto live_dir=LiveOS-i686 ro liveimg quiet rhgb menu default-i386 label check1 menu label i686 Verify and Boot kernel ki686 append initrd=ii686 root=CDLABEL=Fedora-11-x86bi-Live rootfstype=auto live_dir=LiveOS-i686 ro liveimg quiet rhgb check label memtest menu label Memory Test kernel memtest label local menu label Boot from local drive localboot 0xffff --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ defaults.patch 20 Jun 2009 20:10:46 -0000 @@ -0,0 +1,175 @@ +--- syslinux-3.75-orig/com32/menu/Makefile 2009-04-16 06:42:14.000000000 +0200 ++++ syslinux-3.75-defaults/com32/menu/Makefile 2009-06-20 19:21:32.000000000 +0200 +@@ -24,7 +24,7 @@ MODULES = menu.c32 vesamenu.c32 + TESTFILES = + + COMMONOBJS = menumain.o readconfig.o passwd.o drain.o printmsg.o colors.o \ +- background.o refstr.o execute.o ++ background.o refstr.o execute.o verify_cpu.o + + all: $(MODULES) $(TESTFILES) + +--- syslinux-3.75-orig/com32/menu/menu.h 2009-04-16 06:42:14.000000000 +0200 ++++ syslinux-3.75-defaults/com32/menu/menu.h 2009-06-20 19:21:32.000000000 +0200 +@@ -224,4 +224,9 @@ void execute(const char *cmdline, enum k + /* drain.c */ + void drain_keyboard(void); + ++/* verify_cpu.S */ ++#if defined(__i386__) || defined(__x86_64__) ++int verify_cpu(void); ++#endif ++ + #endif /* MENU_H */ +--- syslinux-3.75-orig/com32/menu/readconfig.c 2009-04-16 06:42:14.000000000 +0200 ++++ syslinux-3.75-defaults/com32/menu/readconfig.c 2009-06-20 20:23:24.000000000 +0200 +@@ -656,11 +656,22 @@ static void parse_config_file(FILE *f) + m->parent_entry->displayname = refstr_get(m->title); + } + } +- } else if ( looking_at(p, "default") ) { +- if (ld.label) { +- ld.menudefault = 1; +- } else if (m->parent_entry) { +- m->parent->defentry = m->parent_entry->entry; ++ } else if ( looking_at(p, "default") ++#if defined(__i386__) || defined(__x86_64__) ++ || looking_at(p, "default-i386") ++ || looking_at(p, "default-x86_64") ++#endif ++ ) { ++#if defined(__i386__) || defined(__x86_64__) ++ if (! ( ( looking_at(p, "default-i386") && verify_cpu () == 0 ) || ++ ( looking_at(p, "default-x86_64") && verify_cpu () != 0 ) ) ) ++#endif ++ { ++ if (ld.label) { ++ ld.menudefault = 1; ++ } else if (m->parent_entry) { ++ m->parent->defentry = m->parent_entry->entry; ++ } + } + } else if ( looking_at(p, "hide") ) { + ld.menuhide = 1; +--- syslinux-3.75-orig/com32/menu/verify_cpu.S 1970-01-01 01:00:00.000000000 +0100 ++++ syslinux-3.75-defaults/com32/menu/verify_cpu.S 2009-06-20 20:30:27.000000000 +0200 +@@ -0,0 +1,119 @@ ++/* https://lists.linux-foundation.org/pipermail/fastboot/2006-November/011885.… */ ++#if defined(__i386__) || defined(__x86_64__) ++ .globl verify_cpu ++verify_cpu: ++ push %ebx ++ push %esi ++ push %edi ++ push %ebp ++ call Xverify_cpu ++ pop %ebp ++ pop %edi ++ pop %esi ++ pop %ebx ++ ret ++ ++/* ++ * ++ * verify_cpu.S ++ * ++ * 14 Nov 2006 Vivek Goyal: Created the file ++ * ++ * This is a common code for verification whether CPU supports ++ * long mode and SSE or not. It is not called directly instead this ++ * file is included at various places and compiled in that context. ++ * Following are the current usage. ++ * ++ * This file is included by both 16bit and 32bit code. ++ * ++ * arch/x86_64/boot/setup.S : Boot cpu verification (16bit) ++ * arch/x86_64/boot/compressed/head.S: Boot cpu verification (32bit) ++ * arch/x86_64/kernel/trampoline.S: secondary processor verfication (16bit) ++ * arch/x86_64/kernel/acpi/wakeup.S:Verfication at resume (16bit) ++ * ++ * verify_cpu, returns the status of cpu check in register %eax. ++ * 0: Success 1: Failure ++ * ++ * The caller needs to check for the error code and take the action ++ * appropriately. Either display a message or halt. ++ */ ++ ++Xverify_cpu: ++ ++ pushfl # Save caller passed flags ++ pushl $0 # Kill any dangerous flags ++ popfl ++ ++ /* minimum CPUID flags for x86-64 */ ++ /* see http://www.x86-64.org/lists/discuss/msg02971.html */ ++#define SSE_MASK ((1<<25)|(1<<26)) ++#define REQUIRED_MASK1 ((1<<0)|(1<<3)|(1<<4)|(1<<5)|(1<<6)|(1<<8)|\ ++ (1<<13)|(1<<15)|(1<<24)) ++#define REQUIRED_MASK2 (1<<29) ++ pushfl # standard way to check for cpuid ++ popl %eax ++ movl %eax,%ebx ++ xorl $0x200000,%eax ++ pushl %eax ++ popfl ++ pushfl ++ popl %eax ++ cmpl %eax,%ebx ++ jz verify_cpu_no_longmode # cpu has no cpuid ++ ++ movl $0x0,%eax # See if cpuid 1 is implemented ++ cpuid ++ cmpl $0x1,%eax ++ jb verify_cpu_no_longmode # no cpuid 1 ++ ++ xor %di,%di ++ cmpl $0x68747541,%ebx # AuthenticAMD ++ jnz verify_cpu_noamd ++ cmpl $0x69746e65,%edx ++ jnz verify_cpu_noamd ++ cmpl $0x444d4163,%ecx ++ jnz verify_cpu_noamd ++ mov $1,%di # cpu is from AMD ++ ++verify_cpu_noamd: ++ movl $0x1,%eax # Does the cpu have what it takes ++ cpuid ++ andl $REQUIRED_MASK1,%edx ++ xorl $REQUIRED_MASK1,%edx ++ jnz verify_cpu_no_longmode ++ ++ movl $0x80000000,%eax # See if extended cpuid is implemented ++ cpuid ++ cmpl $0x80000001,%eax ++ jb verify_cpu_no_longmode # no extended cpuid ++ ++ movl $0x80000001,%eax # Does the cpu have what it takes ++ cpuid ++ andl $REQUIRED_MASK2,%edx ++ xorl $REQUIRED_MASK2,%edx ++ jnz verify_cpu_no_longmode ++ ++verify_cpu_sse_test: ++ movl $1,%eax ++ cpuid ++ andl $SSE_MASK,%edx ++ cmpl $SSE_MASK,%edx ++ je verify_cpu_sse_ok ++ test %di,%di ++ jz verify_cpu_no_longmode # only try to force SSE on AMD ++ movl $0xc0010015,%ecx # HWCR ++ rdmsr ++ btr $15,%eax # enable SSE ++ wrmsr ++ xor %di,%di # don't loop ++ jmp verify_cpu_sse_test # try again ++ ++verify_cpu_no_longmode: ++ popfl # Restore caller passed flags ++ movl $1,%eax ++ ret ++verify_cpu_sse_ok: ++ popfl # Restore caller passed flags ++ xorl %eax, %eax ++ ret ++#endif --- syslinux.spec 16 Apr 2009 18:11:30 -0000 1.59 +++ syslinux.spec 20 Jun 2009 20:10:46 -0000 @@ -7,6 +7,7 @@ License: GPLv2+ Group: Applications/System URL: http://syslinux.zytor.com/ Source0: ftp://ftp.kernel.org/pub/linux/utils/boot/syslinux/%{name}-%{tarball_versio… +Patch9: defaults.patch ExclusiveArch: %{ix86} x86_64 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) BuildRequires: nasm >= 0.98.38-1, perl, netpbm-progs @@ -33,12 +34,18 @@ MEMDISK, which loads legacy operating sy %prep %setup -q -n syslinux-%{tarball_version} +%patch9 -p1 %build CFLAGS="-Werror -Wno-unused -finline-limit=2000" export CFLAGS # If you make clean here, we lose the provided syslinux.exe #make clean +rm -f com32/menu/vesamenu.c32 +make -C com32/lib libcom32.a +make -C com32/gpllib libcom32gpl.a +make -C com32/menu vesamenu.c32 +test -f com32/menu/vesamenu.c32 make installer make -C sample tidy

4 12

btrfs for Fedora 12 and 13 LiveCD/DVD ?
by Valent Turkovic 01 Oct '10

01 Oct '10

Hi, how to make Fedora 12 and Fedora 13 LiveCD/DVD that is btrfs formated and not ext4? What options need to be enables in kicstart file so that livecd-creator makes btrfs iso images? I would like to also have compression enabled after btrfs image in transfered to hard drive or SSD. Has anybody tried this? Thank you in advanced, Valent. -- pratite me na twitteru - www.twitter.com/valentt blog: http://kernelreloaded.blog385.com linux, anime, spirituality, windsurf, wireless, ronjenje, pametne kuće, zwave registered as user #367004 with the Linux Counter, http://counter.li.org. ICQ: 2125241, Skype: valent.turkovic, MSN: valent.turkovic(a)hotmail.com

4 14

Destructive behavior in --skipcopy option of livecd-iso-to-disk
by Frederick Grose 13 Jul '10

13 Jul '10

The --skipcopy option in livecd-iso-to-disk was implemented to aid testing and boot configuration file recovery (see http://article.gmane.org/gmane.linux.redhat.fedora.livecd/2682). I've found that it will overwrite both an existing persistent overlay and home.img, if they exist. This is unintentional destructive behavior. While it may seem that one wouldn't ask for a new overlay or home folder AND skipcopy--during the testing of scripts, this is a reasonable scenario. I've filed a bug, https://bugzilla.redhat.com/show_bug.cgi?id=582051, containing the attached skipcopy.patch. Please review and advise me on how to proceed. This is a piece of a project to enhance the livecd-iso-to-disk script for the Sugar on a Stick customization kit project, but it has more general benefits. Again, please see https://bugzilla.redhat.com/show_bug.cgi?id=448030 and advise. I'm planning now to submit smaller change patches to make review easier. --Fred

1 1

Update outstanding patches for livecd-tools
by David Huff 20 Jun '10

20 Jun '10

OK from the original list Peter posted to the spin list here is what we have so far..... o Implement %post --erroronfail - http://lists.fedoraproject.org/pipermail/livecd/2010-May/005797.html - Committed o livecd iso-to-disk --format fails with SD/MMC partitions - https://bugzilla.redhat.com/show_bug.cgi?id=587411- - Under review , Fred posted an new version using Alen's suggestions however I have not had a chance to look at it in depth. o skipcopy option in tools_livecd-iso-to-disk destructively overwrites persistent overlay and home.img - https://bugzilla.redhat.com/show_bug.cgi?id=582051: - http://lists.fedoraproject.org/pipermail/livecd/2010-April/005764.html - needs review - looks like big RFE including - https://bugzilla.redhat.com/show_bug.cgi?id=448030 o livecd-iso-to-disk --format fails with existing LV on USB - http://lists.fedoraproject.org/pipermail/livecd/2010-April/005765.html - https://bugzilla.redhat.com/show_bug.cgi?id=583658 - committed o Duplicating SoaS via CMD - http://lists.fedoraproject.org/pipermail/livecd/2010-March/005762.html - Relaed 448030 - needs review o mandatory syslinux on live cd causes perl dependency - http://lists.fedoraproject.org/pipermail/livecd/2010-March/005714.html - May need to be filed as bug on comps.xml o livecd-creator ignores device directive - http://lists.fedoraproject.org/pipermail/livecd/2010-April/005768.html - https://bugzilla.redhat.com/show_bug.cgi?id=585170 - https://bugzilla.redhat.com/show_bug.cgi?id=588622 - committed o wrong interaction with netinstall iso - https://bugzilla.redhat.com/show_bug.cgi?id=530308 - looks like RFE Also: o dracut cmdline options should (could) include rd_NO_DM - https://bugzilla.redhat.com/show_bug.cgi?id=589783 - committed o SELinux Enabled Images on SELinux Disabled Hosts - needs review o edit-livecd - needs review I may have missed some, feel free to add to the list or comment on what is there. Also I'll be out next week however will pick up reviewing patches when I return. -D

4 5

how to enable btrfs for livecd ?
by Valent Turkovic 04 Jun '10

04 Jun '10

I have tried editing kickstart file so that instead of ext4 iso image uses btrfs but this fails everytime I try it. What am I doing wrong? Has anybody managed to create btrfs livecd image via livecd-creator? How? Please show me your example kickstart files. I see that there was bug opened but now is closed: https://bugzilla.redhat.com/show_bug.cgi?id=571910 If this is not user (mine) error this bug should be reopened, Some more info is also on my blog: http://kernelreloaded.blog385.com/index.php/archives/btrfs-fedora-remix/ -- pratite me na twitteru - www.twitter.com/valentt blog: http://kernelreloaded.blog385.com linux, anime, spirituality, windsurf, wireless, ronjenje, pametne kuće, zwave registered as user #367004 with the Linux Counter, http://counter.li.org. ICQ: 2125241, Skype: valent.turkovic, MSN: valent.turkovic(a)hotmail.com

4 10

[PATCH] add edit-livecd script for editing livecd based images
by Joey Boggs 01 Jun '10

01 Jun '10

Resubmitting the edit-livecd script with the latest updates. edit-livecd is used for opening up livecd images to add and/or edit files with out having to rebuild the iso image. This script is useful for people who don't have the development and yum infrastructure/repos set up to build livecd's from scratch. This is especially useful for custom livecd images, like the ovirt-node project[1]. We agree that changes to packaging and binaries should always be done by modifying kickstart and rebuilding the image via livecd-creator. But if all you want to do is add/edit a config file, public key for SSH, or change the root password this can be done with the edit-livecd script. This is the second generation of the edit-livecd tool that replaces our original bash script with a python version and aims to reuse as much as the livecd-creator libraries as possible. The main reason for the new creator class is to avoid the need for a kisckstart file in order to edit an existing livecd image. [1] http://ovirt.org --- Makefile | 2 + tools/edit-livecd | 350 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 352 insertions(+), 0 deletions(-) create mode 100755 tools/edit-livecd diff --git a/Makefile b/Makefile index 991b27b..62e7fd8 100644 --- a/Makefile +++ b/Makefile @@ -25,6 +25,7 @@ install: man $(INSTALL_PROGRAM) -D tools/image-creator $(DESTDIR)/usr/bin/image-creator $(INSTALL_PROGRAM) -D tools/livecd-iso-to-disk.sh $(DESTDIR)/usr/bin/livecd-iso-to-disk $(INSTALL_PROGRAM) -D tools/livecd-iso-to-pxeboot.sh $(DESTDIR)/usr/bin/livecd-iso-to-pxeboot + $(INSTALL_PROGRAM) -D tools/edit-livecd $(DESTDIR)/usr/bin/edit-livecd $(INSTALL_DATA) -D AUTHORS $(DESTDIR)/usr/share/doc/livecd-tools-$(VERSION)/AUTHORS $(INSTALL_DATA) -D COPYING $(DESTDIR)/usr/share/doc/livecd-tools-$(VERSION)/COPYING $(INSTALL_DATA) -D README $(DESTDIR)/usr/share/doc/livecd-tools-$(VERSION)/README @@ -40,6 +41,7 @@ uninstall: rm -f $(DESTDIR)/usr/bin/livecd-creator rm -rf $(DESTDIR)/usr/lib/livecd-creator rm -rf $(DESTDIR)/usr/share/doc/livecd-tools-$(VERSION) + rm -f $(DESTDIR)/usr/bin/edit-livecd dist : all git archive --format=tar --prefix=livecd-tools-$(VERSION)/ HEAD | bzip2 -9v > livecd-tools-$(VERSION).tar.bz2 diff --git a/tools/edit-livecd b/tools/edit-livecd new file mode 100755 index 0000000..920522c --- /dev/null +++ b/tools/edit-livecd @@ -0,0 +1,350 @@ +#!/usr/bin/python -tt +# +# edit livecd: Edit a livecd to insert files +# +# Copyright 2009, Red Hat Inc. +# Written by Perry Myers <pmyers(a)redhat.com> & David Huff <dhuff(a)redhat.com> +# +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Library General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +import os +import sys +import tempfile +import shutil +import subprocess +import optparse +import logging + +from imgcreate.debug import * +from imgcreate.fs import * +from imgcreate.live import * + +class ExistingSparseLoopbackDisk(SparseLoopbackDisk): + """don't want to expand the disk""" + def __init__(self, lofile, size): + SparseLoopbackDisk.__init__(self, lofile, size) + + def create(self): + #self.expand(create = True) + LoopbackDisk.create(self) + +class LiveImageEditor(LiveImageCreator): + """class for editing LiveCD images. + + We need an instance of LiveImageCreator however we do not have a kickstart + file nor do we need to create a new image. We just want to reuse some of + LiveImageCreators methods on an existing livecd image. + + """ + + def __init__(self, name): + """Initialize a LiveImageEditor instance. + + creates a dummy instance of LiveImageCreator + We do not initialize any sub classes b/c we have no ks file. + + """ + self.name = name + + self.tmpdir = "/var/tmp" + """The directory in which all temporary files will be created.""" + + self.skip_compression = False + """Controls whether to use squashfs to compress the image.""" + + self.skip_minimize = False + """Controls whether an image minimizing snapshot should be created.""" + + self._isofstype = "iso9660" + self.__isodir = None + + self._ImageCreator__builddir = None + """working directory""" + + self._ImageCreator_instroot = None + """where the extfs.img is mounted for modification""" + + self._ImageCreator_outdir = None + """where final iso gets written""" + + self._ImageCreator__bindmounts = [] + + self._LoopImageCreator__imagedir = None + """dir for the extfs.img""" + + self._LoopImageCreator__blocksize = 4096 + self._LoopImageCreator__fslabel = None + self._LoopImageCreator__instloop = None + self._LoopImageCreator__fstype = None + self._LoopImageCreator__image_size = None + + self._LiveImageCreatorBase__isodir = None + """directory where the iso is staged""" + + # properties + def __get_image(self): + if self._LoopImageCreator__imagedir is None: + self.__ensure_builddir() + self._LoopImageCreator__imagedir = tempfile.mkdtemp(dir = os.path.abspath(self.tmpdir), prefix = self.name + "-") + return self._LoopImageCreator__imagedir + "/ext3fs.img" + _image = property(__get_image) + """The location of the image file""" + + + def _get_fstype(self): + dev_null = os.open("/dev/null", os.O_WRONLY) + try: + out = subprocess.Popen(["/sbin/blkid", self._image], + stdout = subprocess.PIPE, + stderr = dev_null).communicate()[0] + for word in out.split(): + if word.startswith("TYPE"): + self._LoopImageCreator__fstype = word.split("=")[1].strip("\"") + + except IOError, e: + raise CreatorError("Failed to determine fsimage TYPE: %s" % e ) + + + def _get_fslable(self): + dev_null = os.open("/dev/null", os.O_WRONLY) + try: + out = subprocess.Popen(["/sbin/e2label", self._image], + stdout = subprocess.PIPE, + stderr = dev_null).communicate()[0] + + self._LoopImageCreator__fslable = out.strip() + + except IOError, e: + raise CreatorError("Failed to determine fsimage TYPE: %s" % e ) + + + def __ensure_builddir(self): + if not self._ImageCreator__builddir is None: + return + + try: + self._ImageCreator__builddir = tempfile.mkdtemp(dir = os.path.abspath(self.tmpdir), + prefix = "edit-livecd-") + except OSError, (err, msg): + raise CreatorError("Failed create build directory in %s: %s" % + (self.tmpdir, msg)) + + + def _run_script(self, script): + + (fd, path) = tempfile.mkstemp(prefix = "script-", + dir = self._instroot + "/tmp") + + logging.debug("copying script to install root: %s" % path) + shutil.copy(os.path.abspath(script), path) + os.close(fd) + os.chmod(path, 0700) + + script = "/tmp/" + os.path.basename(path) + + + try: + subprocess.call([script], preexec_fn = self._chroot) + except OSError, e: + raise CreatorError("Failed to execute script %s, %s " % (script, e)) + finally: + os.unlink(path) + + + def mount(self, base_on, cachedir = None): + """mount existing file system. + + we have to override mount b/c we are not creating an new install root + nor do we need to setup the file system, ie makedirs(/etc/, /boot, ...), + nor do we want to overwrite fstab, or create selinuxfs + + We also need to get some info about the image before we + can mount it. + + """ + + if not base_on: + raise CreatorError("No base livecd image specified") + + self.__ensure_builddir() + + self._ImageCreator_instroot = self._ImageCreator__builddir + "/install_root" + self._LoopImageCreator__imagedir = self._ImageCreator__builddir + "/ex" + self._ImageCreator_outdir = self._ImageCreator__builddir + "/out" + + makedirs(self._ImageCreator_instroot) + makedirs(self._LoopImageCreator__imagedir) + makedirs(self._ImageCreator_outdir) + + LiveImageCreator._base_on(self, base_on) + + self._LoopImageCreator__image_size = os.stat(self._image)[stat.ST_SIZE] + self._get_fstype() + self._get_fslable() + self.fslabel = self._LoopImageCreator__fslable + + self._LoopImageCreator__instloop = ExtDiskMount(ExistingSparseLoopbackDisk(self._image, + self._LoopImageCreator__image_size), + self._ImageCreator_instroot, + self._fstype, + self._LoopImageCreator__blocksize, + self.fslabel) + try: + self._LoopImageCreator__instloop.mount() + except MountError, e: + raise CreatorError("Failed to loopback mount '%s' : %s" % + (self._image, e)) + + cachesrc = cachedir or (self._ImageCreator__builddir + "/yum-cache") + makedirs(cachesrc) + + for (f, dest) in [("/sys", None), ("/proc", None), + ("/dev/pts", None), ("/dev/shm", None), + (cachesrc, "/var/cache/yum")]: + self._ImageCreator__bindmounts.append(BindChrootMount(f, self._instroot, dest)) + + self._do_bindmounts() + + os.symlink("../proc/mounts", self._instroot + "/etc/mtab") + + self.__copy_cd_root(base_on) + + + def __copy_cd_root(self, base_on): + """helper function to root content of the base liveCD to ISOdir""" + + isoloop = DiskMount(LoopbackDisk(base_on, 0), self._mkdtemp()) + self._LiveImageCreatorBase__isodir = self._ImageCreator__builddir + "/iso" + + try: + isoloop.mount() + # legacy LiveOS filesystem layout support, remove for F9 or F10 + if os.path.exists(isoloop.mountdir + "/squashfs.img"): + squashimg = isoloop.mountdir + "/squashfs.img" + else: + squashimg = isoloop.mountdir + "/LiveOS/squashfs.img" + + #copy over everything but squashimg + shutil.copytree(isoloop.mountdir, + self._LiveImageCreatorBase__isodir, + ignore=shutil.ignore_patterns("squashfs.img", "osmin.img")) + except MountError, e: + raise CreatorError("Failed to loopback mount '%s' : %s" % + (base_on, e)) + + finally: + isoloop.cleanup() + + +def parse_options(args): + parser = optparse.OptionParser(usage = "%prog [-s=<script.sh>] <LIVECD.iso>") + + parser.add_option("-n", "--name", type="string", dest="name", + help="name of new livecd (don't include .iso will be added)") + + parser.add_option("-o", "--output", type="string", dest="output", + help="specify the output dir") + + parser.add_option("-s", "--script", type="string", dest="script", + help="specify script to run chrooted in the livecd fsimage") + + parser.add_option("-t", "--tmpdir", type="string", + dest="tmpdir", default="/var/tmp", + help="Temporary directory to use (default: /var/tmp)") + + parser.add_option("", "--skip-compression", action="store_true", dest="skip_compression") + + parser.add_option("", "--skip-minimize", action="store_true", dest="skip_minimize") + + setup_logging(parser) + + (options, args) = parser.parse_args() + + if len(args) != 1: + parser.print_usage() + sys.exit(1) + + return (args[0], options) + +def rebuild_iso_symlinks(isodir): + # remove duplicate files and rebuild symlinks to reduce iso size + efi_vmlinuz = "%s/EFI/boot/vmlinuz0" % isodir + isolinux_vmlinuz = "%s/isolinux/vmlinuz0" % isodir + efi_initrd = "%s/EFI/boot/initrd0.img" % isodir + isolinux_initrd = "%s/isolinux/initrd0.img" % isodir + + os.remove(efi_vmlinuz) + os.remove(efi_initrd) + os.symlink(isolinux_vmlinuz,efi_vmlinuz) + os.symlink(isolinux_initrd,efi_initrd) + + +def main(): + (livecd, options) = parse_options(sys.argv[1:]) + + if os.geteuid () != 0: + print >> sys.stderr, "You must run edit-livecd as root" + return 1 + + if options.name: + name = options.name + else: + name = os.path.basename(livecd) + ".edited" + + if options.output: + output = options.output + else: + output = os.path.dirname(livecd) + + + editor = LiveImageEditor(name) + editor.tmpdir = os.path.abspath(options.tmpdir) + editor.skip_compression = options.skip_compression + editor.skip_minimize = options.skip_minimize + + try: + editor.mount(livecd, cachedir = None) + if options.script: + print "Running edit script '%s'" % options.script + editor._run_script(options.script) + else: + print "Launching shell. Exit to continue." + print "----------------------------------" + editor.launch_shell() + rebuild_iso_symlinks(editor._LiveImageCreatorBase__isodir) + editor.unmount() + editor.package(output) + except CreatorError, e: + logging.error(u"Error editing Live CD : %s" % e) + return 1 + finally: + editor.cleanup() + + return 0 + + +if __name__ == "__main__": + sys.exit(main()) + + +arch = rpmUtils.arch.getBaseArch() +if arch in ("i386", "x86_64"): + LiveImageCreator = x86LiveImageCreator +elif arch in ("ppc",): + LiveImageCreator = ppcLiveImageCreator +elif arch in ("ppc64",): + LiveImageCreator = ppc64LiveImageCreator +else: + raise CreatorError("Architecture not supported!") -- 1.6.6.1

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copying a missing readme file,
by muayyad.alsadi＠ojuba.org 01 Jun '10

01 Jun '10

hello, in line 380 of fedora-live-base.ks it copies a file that used to be part of fedora-release-notes cp $INSTALL_ROOT/usr/share/doc/HTML/readme-live-image/en_US/readme-live-image-en_US.txt $LIVE_ROOT/README http://git.fedorahosted.org/git/?p=spin-kickstarts.git;a=blob;f=fedora-live… the file no longer exists, any comment on this ?

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Re: [Fedora-livecd-list] Help: livecd-creator details
by Bruno Wolff III 31 May '10

31 May '10

You didn't copy this back to the list. Since the questions appear to be targeted to the list, I am going to copy this back to the list. On Sun, May 30, 2010 at 11:08:10 +0800, Lee Eric <openlinuxsource(a)gmail.com> wrote: > Thanks for your reply. My goal is simple, I just wanna make a live cd > not using livecd-creator but take steps what livecd-creator does. That's a pretty odd request. If you want to learn, a good place to start would be looking at the installed python code that runs. You might even be able to plugin the reiserfs stuff into a modifed version. There will probably be some gotcha's along the way. > Here's what I saw from livecd-creator README. > > o Sets up a file for the ext3 file system that will contain all the > data comprising the live CD > > o Loopback mounts that file into the file system so there is an > installation root > > o Bind mounts certain kernel file systems (/dev, /dev/pts, /proc, > /sys, /selinux) inside the installation root > > o Uses a configuration file to define the requested packages and > default configuration options. The format of this file is the same > as is used for installing a system via kickstart. > > o Installs, using yum, the requested packages into the installation > using the given repositories > > o Optionally runs scripts as specified by the live CD configuration file. > > o Relabels the entire installation root (for SELinux) > > o Creates a live CD specific initramfs that matches the installed kernel > > o Unmounts the kernel file systems mounted inside the installation root > > o Unmounts the installation root > > o Runs resize2fs to minimize and unminimize the ext3 file to remove data > from deleted files > > o Runs resize2fs to minimize on a devicemapper snapshot, to generate a > small minimized delta image file which can be used by anaconda to > reduce installation time by not copying unused data to disk > > o Creates a squashfs file system containing only the ext3 file (compression) > > o Configures the boot loader > > o Creates an iso9660 bootable CD > > I wanna take steps it mentions then I can make a Live CD. I hope > someone shoe me some tips for every commands. > > Thanks. > > Eric > > On Sun, May 30, 2010 at 12:09 AM, Bruno Wolff III <bruno(a)wolff.to> wrote: > > On Fri, May 28, 2010 at 23:52:32 +0800, > > Lee Eric <openlinuxsource(a)gmail.com> wrote: > >> Hi all, > >> > >> I'm a user of Fedora 12. And I wanna make my own Live CD by using some > >> ways. I noticed livecd-creator works well and I read its read me under > >> /usr/share/doc, it looks like here's a chapter named "HOW THE LIVE CD > >> CREATOR WORKS" tell us how to make a Live CD manually. So I'm very > >> curious how this magic happened then a Live CD created. > > > > What is your overall goal. It is unlikely (though it could be) that the > > way you are trying to do this is the right approach. > > > > Normally you want to work with the kickstart files. Those can contain more > > than a list of packages to install. If you explain what your overall goal is > > someone might be able to make some suggestions with how to achieve it using > > a kickstart file. > >

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Re: [Fedora-livecd-list] Non-native architectures
by Jasper Hartline 30 May '10

30 May '10

You don't have to run binaries in the target platform to build a LiveCD. That is where you are getting confused. >From any system I can build a LiveCD for any target architecture, as long as I set the target up correctly for that platform. For example when I do copy or configuration changes, I can simply run mv this or cp this to the target, which is still a same architecture binary as the host system. Trust me I have built LiveCDs for x86_64 and i686 on an i686 box. When for example syslinux is installed, you want to use the isolinux.bin file FROM THE TARGET with the host's mkisofs. You don't need to execute command from the target system to create a LiveCD for another platform. On Sun, May 30, 2010 at 4:23 AM, Mads Kiilerich <mads(a)kiilerich.com> wrote: > As far as I know the only way to run x86_64 binaries (and thus allow such > rpms to be installed correctly) on i686 is to use full hardware emulation. > Neither variables nor setarch nor mock is sufficient.

1 0

Non-native architectures
by Misha Shnurapet 30 May '10

30 May '10

Hello. Currently, running an x86_64 system I can also re-spin 32-bit versions by using "setarch i686" in the command line: su -c "setarch i686 livecd-creator --config=/usr/share/spin-kickstarts/fedora-livecd-desktop.ks" But it does not work other way around. For example, su -c "setarch x86_64 livecd-creator --config=/usr/share/spin-kickstarts/fedora-livecd-desktop.ks" gives an error. Same for another architecture. I think there's something wrong with this. Is it possible to create spins for other architectures? Can it be fixed? Thank you. -- Best regards, Misha Shnurapet, Fedora Project Contributor http://fedoraproject.org/wiki/User:Shnurapet shnurapet at fedoraproject.org, GPG: 00217306

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livecd May 2010