auto-biarch (x86_64 + i686) LiveDVD patch + ISO
by Jan Kratochvil
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/01188... */
++#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 $1,%eax
++ ret
++verify_cpu_sse_ok:
++ popfl # Restore caller passed flags
++ xorl %eax, %eax
++ ret
++#endif
--- syslinux.spec 16 Apr 2009 18:11:30 -0000 1.59
+++ syslinux.spec 20 Jun 2009 20:10:46 -0000
@@ -7,6 +7,7 @@ License: GPLv2+
Group: Applications/System
URL: http://syslinux.zytor.com/
Source0: ftp://ftp.kernel.org/pub/linux/utils/boot/syslinux/%{name}-%{tarball_vers...
+Patch9: defaults.patch
ExclusiveArch: %{ix86} x86_64
Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildRequires: nasm >= 0.98.38-1, perl, netpbm-progs
@@ -33,12 +34,18 @@ MEMDISK, which loads legacy operating sy
%prep
%setup -q -n syslinux-%{tarball_version}
+%patch9 -p1
%build
CFLAGS="-Werror -Wno-unused -finline-limit=2000"
export CFLAGS
# If you make clean here, we lose the provided syslinux.exe
#make clean
+rm -f com32/menu/vesamenu.c32
+make -C com32/lib libcom32.a
+make -C com32/gpllib libcom32gpl.a
+make -C com32/menu vesamenu.c32
+test -f com32/menu/vesamenu.c32
make installer
make -C sample tidy
12 years, 9 months
Custom initrd
by Mads Kiilerich
I am using livecd-creator from livecd-tools-024-1.fc11.i586 and need to
customize the initrd. But I have problems making it work and figuring
out what is going on.
I have figured out that livecd-creator through imgcreate creates a
/etc/sysconfig/mkinitrd. When rpms runs mkinitrd from their %post script
then it will exec mkliveinitrd and use the configured module list.
AFAICS livecd-creator then picks up the initrd from /boot, and the end
result after having written the iso to usb with livecd-iso-to-disk is
that it ends up in /syslinux/initrd0.img.
But if I overwrite the /boot/initrd* in %post like this:
/sbin/mkinitrd -f /boot/initrd-$(rpm -q kernel --qf
'%{version}-%{release}.%{arch}\n').img $(rpm -q kernel --qf
'%{version}-%{release}.%{arch}\n')
then it won't be used.
What am I doing wrong? When is the initrd picked up? What is the code flow?
If I make %post preserve /etc/sysconfig/mkinitrd and boots from usb and
restores /etc/sysconfig/mkinitrd and runs
/sbin/mkinitrd -f /mnt/live/syslinux/initrd0.img $(rpm -q kernel
--qf "%{version}-%{release}.%{arch}\n")
then it works as expected.
/Mads
13 years, 7 months
Re: Unnecessary SELinux Failure Condition?
by Jay Greguske
Daniel J Walsh wrote:
> On 09/11/2009 04:47 PM, Jay Greguske wrote:
>
>> Hello,
>>
>> While using livecd-creator and poking around the code, I found a check
>> that I don't understand the reason for. livecd-creator will bail out if
>> the host has SELinux disabled and the kickstart file requests it be
>> enabled. Why is that? I would think that if SELinux was disabled but you
>> still had the policy available, that would be all you need to build a
>> properly labeled image.
>>
>> Out of curiosity I made changes to the code just to see what would
>> happen. I attached them to this mail for reference, NOT as proposed
>> changes to be applied to the livecd-tools code. On an F10 system with
>> SELinux disabled I was able to build a working livecd image that I could
>> boot and play around in. SELinux was being enforced in the image too. I
>> was able to do this with a RHEL 5 kernel as well, just to see if maybe
>> something had changed with an earlier version of SELinux.
>>
>> Perhaps the failure condition is no longer necessary?
>>
>> Thanks in advance,
>> - Jay
>>
> Yes I think that is no longer necessary. And it should definitely be supported.
>
>
Attached is a cleaner patch that removes the check and some other
unnecessary code (thanks Dan). With this users should be able to build
livecd images that have SELinux enabled on an SELinux-disabled host.
I've tested this on an F10 system with an F10 and a RHEL 5 kernel. Both
kernels I was able to build images with the SELinux enabled and disabled
on the host (but always enabled in the kickstart file).
Let me know what you guys think!
Thanks,
- Jay
13 years, 9 months
livecd-iso-to-pxe problem
by Francesco Crippa
Hi guys,
I've got a problem with the script "livecd-iso-to-pxe"... It creates the right files (under /tftboot directory) but I can't pxeboot a machine with this configuration.
During the pxeboot, initrd is loaded and kernel starts the execution, but it looks like it can't run (or find) the init process...
Have you ever got this problem before?
Unfortunately I haven't got any error message to show you (just kernel logs on the console during the boot... but without error... just the kernel, no messages from init script...). I'm using fedora11
Le me know if you know a solution for this problem
Thanks
Francesco
--
Francesco Crippa
fcrippa(a)byte-code.com
http://people.byte-code.com/fcrippa
13 years, 11 months
Re: [Fedora-livecd-list] Re: Unnecessary SELinux Failure Condition?
by Jay Greguske
Daniel J Walsh wrote:
> On 09/29/2009 03:45 PM, Jay Greguske wrote:
>
>> Jeremy Katz wrote:
>>
>>> On Fri, Sep 25, 2009 at 8:59 AM, Jay Greguske <jgregusk(a)redhat.com> wrote:
>>>
>>>
>>>> Jeremy Katz wrote:
>>>>
>>>>
>>>>> There have been some problems more recently with the booleans stuff if
>>>>> SELinux isn't enabled. Does that all end up working correctly still?
>>>>>
>>>>>
>>>>>
>>>> I'll look into it. Are there any you have in mind specifically?
>>>>
>>>>
>>> Dan might remember better than I -- I vaguely remember that a lot of
>>> the home directory bits and also some of the xguest stuff requires
>>> working booleans
>>>
>>> - Jeremy
>>>
>>>
>> I installed xguest to a running livecd (desktop ks file) and played with
>> two booleans related to it: browser_write_xguest_data, and
>> xguest_connect_network. With the former turned off the Guest account
>> could not download files from random internet sites, and with the latter
>> it couldn't connect at all, so I'd say they were functioning as
>> expected. I'm pretty confident SELinux booleans are working correctly
>> with these changes. If you have other tests to suggest I'd be happy to
>> try them out.
>>
>> Thanks,
>> - Jay
>>
> How much work would it be to create a livecd with only an xguest login.
> Random Root password and no user accounts.
>
> So the cd could only run xguest. I know if you can boot the cd you can beat the system, but it might be a cool demo.
>
Should be pretty easy: you just need the right kickstart configuration
file. While things are quiet this week I'll see if I can produce that
for you.
14 years
edit-livecd tool
by David Huff
We have been working on a bash script 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.
I am Looking for comments and feedback on this approach. We would
eventual like for something like this to be included in Livecd-tools,
and if this approach is accepted I will work to break this out into
smaller patches and submit to the list.
-D
[1] http://ovirt.org
14 years
request for free fedora cd
by Mihir parmar
res. sir, i here by submit my request for free cd.
Name:Mihir K.Parmar
Address:Asarwa marathi school-2
Opp. Vijay Mill, Naroda road
Ahmedabad-380025
City:Ahmedabad
State:Gujarat
Country:India
14 years
Makefile
by Warren Togami 砥上勇
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
New commits:
commit b19d0851ec753da50b97bfce5d06440669141582
Author: Warren Togami <wtogami(a)redhat.com>
Date: Wed Sep 16 13:51:59 2009 -0400
version 028
diff --git a/Makefile b/Makefile
index 76f1580..18dcba6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
-VERSION = 027
+VERSION = 028
INSTALL = /usr/bin/install -c
INSTALL_PROGRAM = ${INSTALL}
14 years
tools/livecd-iso-to-disk.sh
by Warren Togami 砥上勇
tools/livecd-iso-to-disk.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
New commits:
commit 5f623257e4d80ac75ec3352e5ad6598e2df0f312
Author: Jason Farrell <farrellj(a)gmail.com>
Date: Wed Sep 16 13:43:33 2009 -0400
Fix display of free space during livecd-iso-to-disk error message
diff --git a/tools/livecd-iso-to-disk.sh b/tools/livecd-iso-to-disk.sh
index cd75153..3496214 100755
--- a/tools/livecd-iso-to-disk.sh
+++ b/tools/livecd-iso-to-disk.sh
@@ -491,7 +491,7 @@ if [ $tba -gt $(($free + $tbd)) ]; then
echo "= Requested: $tba"
echo "- Available: $(($free + $tbd))"
echo "---------------------------"
- echo "= To fit, free or decrease requested size total by: $(($tba - $free + $tbd))"
+ echo "= To fit, free or decrease requested size total by: $(($tba - $free - $tbd))"
exitclean
fi
14 years
