livecd October 2011

livecd@lists.fedoraproject.org

12 participants
14 discussions

livecd fs format
by Mr Dash Four 29 Oct '11

29 Oct '11

I have been using the LiveCD format extensively on majority of my machines throughout the years as it brings, among other things, enhanced protection to my root (/) image (as this is preserved throughout the life of the session and is restored after each reboot). I have, however, two fundamental issues I need to clear up: 1. How is the LiveCD file system constructed/built? I've read a variety of articles and it seems that it is close to the UnionFS (rom+ram "partitions"), but I am not sure that is used with the new versions of Linux. I see there are multiple loop mounts on the system, but can't figure out what they are. 2. My understanding is that all files that are modified in the "live" image are stored "separately" on a "ram partition". If that is indeed the case, can I look at what has been "modified" during the live session? This is easily visible and implemented in UnionFS by a simple "ls" on the ram (i.e. the read-write) part of the UnionFS, but I am not sure how this is organised on the LiveCD system. Any help and advice on the above two issues is appreciated. Thanks!

3 4

persistent overlay
by Tim Coote 29 Oct '11

29 Oct '11

Hullo I'm trying to use livecd to test fedora upgrades non-destructively. To make this work, I really need to be able to use the persistent overlay to fix drivers. I'm using the standard command: livecd-iso-to-disk --overlay-size-mb 2047 /path/to/live.iso /dev/sdb1 However, this is not working as I'd expect. If I boot from the resulting usb drive and change the configuration (eg to enable sshd), then the changes are lost on reboot. Have I misunderstood how persistent overlays are supposed to work - I'd interpreted the documentation to mean that the overlay can persist changes from /, as well as just providing a persistent overlay to /home? tia Tim

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Trying to build Fedora 16 remix
by Scott Dowdle 28 Oct '11

28 Oct '11

Greetings, I've been building personal Fedora remixes since Fedora 9. I just started building one based on Fedora 16 yesterday. I have noticed two errors: 1) When it builds, everything goes fine... and then it counts down the percentage of the iso it is finishing up... and then it give an isohybrid error: isohybrid: /var/tmp/imgcreate-1J2TbZ/out/MontanaLinux-F16-001-i686.iso: seek error - 6: Invalid argument The .iso does finish and it is bootable... so perhaps that error is inconsequential. 2) When I boot the CD, it works fine... but when I do an install... the install goes fine but at the very end where it is installing the bootloader I get a really long anaconda error: Attached file (MontanaLinux-F16-001-intsall-bug.txt.gz) That is a big bug making a non-usable system. That was done in a KVM VM. I used gparted to partition the virtual disk before I ran the installer. It has a msdos partition table. I have not tried the install on physical machine... yet. I was just curious if anyone has run into these errors. TYL, -- Scott Dowdle 704 Church Street Belgrade, MT 59714 (406)388-0827 [home] (406)994-3931 [work]

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Branch 'f16-branch' - 2 commits - imgcreate/live.py Makefile
by Brian C. Lane 26 Oct '11

26 Oct '11

Makefile | 2 +- imgcreate/live.py | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) New commits: commit 3ee2882bbe82842a4d6afc63ec3a5ea77c5f9d1d Author: Brian C. Lane <bcl(a)redhat.com> Date: Wed Oct 26 06:18:25 2011 -0700 Version 16.8 diff --git a/Makefile b/Makefile index 477d7c4..c4a49e9 100644 --- a/Makefile +++ b/Makefile @@ -1,5 +1,5 @@ -VERSION = 16.7 +VERSION = 16.8 INSTALL = /usr/bin/install -c INSTALL_PROGRAM = ${INSTALL} commit 3f5b0c7934d685e16b2e9721cbfdb1392bab9e86 Author: Brian C. Lane <bcl(a)redhat.com> Date: Wed Oct 26 06:17:52 2011 -0700 Correct patch (#748344) diff --git a/imgcreate/live.py b/imgcreate/live.py index 2edd877..11e8c57 100755 --- a/imgcreate/live.py +++ b/imgcreate/live.py @@ -700,7 +700,7 @@ hiddenmenu checkisomd5 = self._has_checkisomd5() # tell dracut not to ask for LUKS passwords or activate mdraid sets - if self.isDracut: + if self._isDracut: kern_opts = kernel_options + " rd.luks=0 rd.md=0 rd.dm=0" else: kern_opts = kernel_options

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Encrypted partition
by Ruch Grégory 25 Oct '11

25 Oct '11

Hi ! First of all, I apologize for my bad English level ! I'm trying to build a hardened live system. I want to encrypt the / partition. In my kickstart file I use : part / --size 1024 --encrypted --passphrase=pass1 It doesn't work ... I want to enter the passphrase before the system run ! Logically the system don't be able to boot without passphrase. But actually the system boot without it. Are there anybody who have ever try to use encrypted partition in a live system ? I'm new in fedora, if you have suggestion about hardening or if you have ever build a hardened live system, I will be happy to get some information ! :) Thank you for your reply Gregory

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Changes to 'refs/tags/livecd-tools-16.7'
by Brian C. Lane 25 Oct '11

25 Oct '11

Tag 'livecd-tools-16.7' created by Brian C. Lane <bcl(a)redhat.com> at 2011-10-24 17:48 +0000 Tag as livecd-tools-16.7 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEVAwUATqWk8BF+jBaO/jp/AQKJ9Qf8D2sL/DFfikyt2Ruf2c7l5GjW/R5MYyb7 u8rJekAbRo/8jS0p4uOp46GT0JN2+ir2q71Fgi8XDBEUVb+cclcDmugyzZUDrDZu WrgwMSVCE4KwjSnMhtJ/SF7X34R5PXICnRzR4WYOe70f2AbtwPEkRdH4BFUO1P59 9m8WpmNorYi0NKeu4zSA40Fw0xy7mBSZrwmf3A0sw4KgOO3sup4Zv5DzAk0QRGm5 XqBINylMsrwwtRGWzpKyMPovoE4jSZQLfqj2WkNEuTuSrvZLLAa6Hg5Y6SeBV+d+ S6SaC1gVAiOyUZO9gDIsaaC0PS1IZHnfiKamb3h6PHwUb1TqWrDG6Q== =gSHS -----END PGP SIGNATURE----- Changes since livecd-tools-16.6: Brian C. Lane (2): Add dracut args to EFI grub.conf creation (#748344) Version 16.7 --- Makefile | 2 +- imgcreate/live.py | 11 ++++++++--- 2 files changed, 9 insertions(+), 4 deletions(-) ---

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Branch 'f16-branch' - Makefile
by Brian C. Lane 25 Oct '11

25 Oct '11

Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) New commits: commit 5b2b088f948b4bd5146548de831e3c8b74bb6514 Author: Brian C. Lane <bcl(a)redhat.com> Date: Mon Oct 24 10:48:12 2011 -0700 Version 16.7 diff --git a/Makefile b/Makefile index b64ecd7..477d7c4 100644 --- a/Makefile +++ b/Makefile @@ -1,5 +1,5 @@ -VERSION = 16.6 +VERSION = 16.7 INSTALL = /usr/bin/install -c INSTALL_PROGRAM = ${INSTALL}

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Branch 'f16-branch' - imgcreate/live.py
by Brian C. Lane 25 Oct '11

25 Oct '11

imgcreate/live.py | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) New commits: commit b7816d38ec991eedc2cf422d0539f8321775e65b Author: Brian C. Lane <bcl(a)redhat.com> Date: Mon Oct 24 09:57:31 2011 -0700 Add dracut args to EFI grub.conf creation (#748344) diff --git a/imgcreate/live.py b/imgcreate/live.py index 2aa8ab6..2edd877 100755 --- a/imgcreate/live.py +++ b/imgcreate/live.py @@ -699,21 +699,26 @@ hiddenmenu kernel_options = self._get_kernel_options() checkisomd5 = self._has_checkisomd5() - cfg = "" + # tell dracut not to ask for LUKS passwords or activate mdraid sets + if self.isDracut: + kern_opts = kernel_options + " rd.luks=0 rd.md=0 rd.dm=0" + else: + kern_opts = kernel_options + cfg = "" for index in range(0, 9): # we don't support xen kernels if os.path.exists("%s/EFI/boot/xen%d.gz" %(isodir, index)): continue cfg += self.__get_efi_image_stanza(fslabel = self.fslabel, isofstype = "auto", - liveargs = kernel_options, + liveargs = kern_opts, long = name, extra = "", index = index) if checkisomd5: cfg += self.__get_efi_image_stanza(fslabel = self.fslabel, isofstype = "auto", - liveargs = kernel_options, + liveargs = kern_opts, long = "Verify and Boot " + name, extra = "rd.live.check", index = index)

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how to create Fedora LiveCD with GUI but no Desktop (using WM)
by Globe Trotter 17 Oct '11

17 Oct '11

Hello, How does one build a Fedora LIveCD without a desktop but with a WM and GUI? I was looking at the fedora-livecd-lxde.ks file and noticed the following: # create /etc/sysconfig/desktop (needed for installation) cat > /etc/sysconfig/desktop <<EOF PREFERRED=/usr/bin/startlxde DISPLAYMANAGER=/usr/sbin/lxdm EOF Also, # Show harddisk install on the desktop sed -i -e 's/NoDisplay=true/NoDisplay=false/' /usr/share/applications/liveinst.desktop mkdir /home/liveuser/Desktop cp /usr/share/applications/liveinst.desktop /home/liveuser/Desktop How do I modify at least these parts? I would like to still have the ability to log in as a liveuser, and then install to HDD (for this, I guess I will need anaconda and firstboot).

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Can I create x86_64 livecd on 32bit box?
by Tim Coote 14 Oct '11

14 Oct '11

In principle, I'd have thought that this was possible, if where binaries need to be run in the creation process the inputs/outputs are compatible between the architectures and the mappings between which binaries to use are properly managed. however, it doesn't seem to work: setarch x86_64 livecd-creator -c whatever.ks simply returns: setarch: x86_64: Unrecognized architecture I'm using f15, util-linux-2.19.1-1.4.fc15.i686 (for setarch). livecd-tools-15.7-1.fc15.i686 (I'm assuming that using setarch is the right approach to use, otherwise, livecd-creator just builds for the architecture that it's run on . Tim

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firewall directives not working for livecd-creator
by Tim Coote 10 Oct '11

10 Oct '11

Hullo I'm trying to create a spin using livecd-creator from livecd-tools-15.7-1.fc15.i686. However, I cannot get any firewall rules to pass through from the kickstart to the the livecd. I always seem to get a default firewall config that blocks everything, and the rules that I wanted in /etc/sysconfig/iptables get mv'd to /etc/sysconfig/iptables.old. Elsewhere I've seen comments to this effect, but cannot find the definitive position in a bug tracker. Am I correct and how can I work around this? regards Tim

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Expanding the overlay size
by Phil Meyer 05 Oct '11

05 Oct '11

The livd images currently appear to have 4GB filesystems, which would correspond to single layer DVDs. This is ok. My question: Is the entire free space reported by tools like 'df' supposed to be writable? My simple tests indicate that it is not. ie: # df -h . Filesystem Size Used Avail Use% Mounted on /dev/loop6 4.0G 1.3G 2.7G 33% / # wget http://mirror.fiber.net/centos/6.0/isos/x86_64/CentOS-6.0-x86_64-bin-DVD1.i… --2011-09-27 17:41:04-- http://mirror.fiber.net/centos/6.0/isos/x86_64/CentOS-6.0-x86_64-bin-DVD1.i… Resolving mirror.fiber.net... 69.160.84.36 Connecting to mirror.fiber.net|69.160.84.36|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 4238800896 (3.9G) [application/octet-stream] Saving to: “CentOS-6.0-x86_64-bin-DVD1.iso” 12% [===> ] 529,255,008 721K/s in 13m 11s Cannot write to “CentOS-6.0-x86_64-bin-DVD1.iso” (Read-only file system). # df -h . Filesystem Size Used Avail Use% Mounted on /dev/loop6 4.0G 1.8G 2.2G 46% / So it seems that roughly 500MB is available via an overlay. Only 'livecd-iso-to-disk', of all of the livecd tools, has an overlay option. The question is: How to adjust the overlay somewhere during the process of: livecd-creator -> livecd-iso-to-pxeboot such that a system using the initrd.img created by 'livecd-iso-to-pxeboot' has all of the remainder of the 4GB file-system available via the overlay. Thanks for any pointers!

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Re: [Fedora-livecd-list] /sys already mounted - livecd doesn't boot
by Mads Kiilerich 03 Oct '11

03 Oct '11

You are combining f14 and f15 kickstarts. I don't know how well that combines ... and it depends on what Fedora version you are building on. Mads Arun SAG <sagarun(a)gmail.com> wrote: >Hi, > >I have created a livecd using following kickstart files, > >http://sagarun.fedorapeople.org/misc/fedora-live-base.ks >http://sagarun.fedorapeople.org/misc/fedora-live-minimization.ks >http://sagarun.fedorapeople.org/misc/fedora-schools.ks > >But when tried to test the iso using virtualbox, I am getting following >error message > >http://sagarun.fedorapeople.org/misc/sysfs_screenshot.png > >Am i missing something? > >-- >Arun S.A.G >http://zer0c00l.in/ > >-- >livecd mailing list >livecd(a)lists.fedoraproject.org >https://admin.fedoraproject.org/mailman/listinfo/livecd

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/sys already mounted - livecd doesn't boot
by Arun SAG 02 Oct '11

02 Oct '11

Hi, I have created a livecd using following kickstart files, http://sagarun.fedorapeople.org/misc/fedora-live-base.ks http://sagarun.fedorapeople.org/misc/fedora-live-minimization.ks http://sagarun.fedorapeople.org/misc/fedora-schools.ks But when tried to test the iso using virtualbox, I am getting following error message http://sagarun.fedorapeople.org/misc/sysfs_screenshot.png Am i missing something? -- Arun S.A.G http://zer0c00l.in/

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livecd October 2011