SwitchToLiveBuild
⇤ ← Revision 1 as of 2011-05-23 13:11:20
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=== Notes === Current differences on i386 (live-build 3.0~a17-1): {{{ Present in live-build and not in livecd-rootfs: vmlinuz/initramfs ([[http://bugs.debian.org/627665]]) /etc/adjtime /etc/resolv.conf Present in livecd-rootfs and not in live-build: /etc/apt/trusted.gpg~ (OK) /etc/group- (OK) /etc/gshadow- (OK) /etc/hosts (OK) /etc/shadow- (OK) /etc/udev/rules.d/70-persistent-net.rules (OK) /sbin/initctl ([[http://bugs.debian.org/627406]]) /usr/lib/firefox-4.0.1/dictionaries/DicOOo.sxw /usr/lib/firefox-4.0.1/dictionaries/en-GB.aff /usr/lib/firefox-4.0.1/dictionaries/en-GB.dic /usr/lib/firefox-4.0.1/dictionaries/en-US.aff /usr/lib/firefox-4.0.1/dictionaries/en-US.dic apt-xapian-index (maybe that package needs adjusting?) /var/lib/dpkg/available-old (OK) /var/lib/dpkg/diversions-old (OK) /var/lib/dpkg/statoverride-old (OK) /var/lib/dpkg/status-old (OK) /var/lib/mlocate/mlocate.db ([[http://bugs.debian.org/627332]]) /var/log/apt/term.log (OK?) Other changes: /etc/apt/sources.list rather shorter in live-build /etc/hostname is localhost.localdomain in live-build (OK) /etc/kernel-img.conf shorter in live-build different set of updates applied (OK) debconf/frontend not marked seen in live-build (OK) dictionaries-common/default-wordlist marked seen in live-build (don't care?) nvidia-common/obsolete-driver not set to false in live-build (why was it?) gettext-base Auto-Installed: 0 in live-build iso-codes Auto-Installed: 0 in live-build libfreetype6 Auto-Installed: 0 in live-build libfuse2 Auto-Installed: 0 in live-build linux-headers-2.6.38-8 Auto-Installed: 1 in livecd-rootfs linux-headers-2.6.38-8-generic Auto-Installed: 1 in livecd-rootfs uuid-runtime Auto-Installed: 0 in live-build lots of English locales added to /var/lib/belocs/hashfile in live-build (OK?) zh_CN.utf8, zh_SG.utf8 added to /var/lib/belocs/list in live-build linux-image-2.6.38-8-generic, linux-base removed from /var/run/reboot-required.pkgs in live-build (don't care) compress initramfs with lzma More configuration required: --linux-packages }}} |
Launchpad Entry: foundations-o-live-build
Created: 2011-05-23
Contributors: ColinWatson
Packages affected: livecd-rootfs, live-build
Summary
Ubuntu live CD builds have always been based on an in-house tool called livecd-rootfs. Since we started Ubuntu, Debian has also been working on live CDs, and has a tool called live-build which is capable of building Ubuntu images as well. There is little sense in maintaining two separate tools, so since live-build is more flexible we should switch to it.
Release Note
Live CD images are now built using live-build, making it easier for users to build customised images.
Rationale
Aside from general flexibility, live-build is also used by Canonical's OEM Services team, so switching to it provides internal benefits as well.
Implementation
The main work involved in switching to live-build is to analyse the differences between a filesystem image created by livecd-rootfs and one created by live-build in detail, and reconcile all of them either by adjusting live-build configuration, by changing live-build itself, or by signing off on the difference as one we don't need to care about.
Following this, we need to invent a way to pass live-build configuration across from the cdimage builder (because the ISO9660 wrapping will still be done on a single central machine, while live filesystems need to be built on machines of the appropriate architecture), and to run the appropriate build commands. For the time being, the BuildLiveCD script in livecd-rootfs will live on as a wrapper script for this, calling lb config and lb build to do the actual work. This may change in the future.
Notes
Current differences on i386 (live-build 3.0~a17-1):
Present in live-build and not in livecd-rootfs: vmlinuz/initramfs ([[http://bugs.debian.org/627665]]) /etc/adjtime /etc/resolv.conf Present in livecd-rootfs and not in live-build: /etc/apt/trusted.gpg~ (OK) /etc/group- (OK) /etc/gshadow- (OK) /etc/hosts (OK) /etc/shadow- (OK) /etc/udev/rules.d/70-persistent-net.rules (OK) /sbin/initctl ([[http://bugs.debian.org/627406]]) /usr/lib/firefox-4.0.1/dictionaries/DicOOo.sxw /usr/lib/firefox-4.0.1/dictionaries/en-GB.aff /usr/lib/firefox-4.0.1/dictionaries/en-GB.dic /usr/lib/firefox-4.0.1/dictionaries/en-US.aff /usr/lib/firefox-4.0.1/dictionaries/en-US.dic apt-xapian-index (maybe that package needs adjusting?) /var/lib/dpkg/available-old (OK) /var/lib/dpkg/diversions-old (OK) /var/lib/dpkg/statoverride-old (OK) /var/lib/dpkg/status-old (OK) /var/lib/mlocate/mlocate.db ([[http://bugs.debian.org/627332]]) /var/log/apt/term.log (OK?) Other changes: /etc/apt/sources.list rather shorter in live-build /etc/hostname is localhost.localdomain in live-build (OK) /etc/kernel-img.conf shorter in live-build different set of updates applied (OK) debconf/frontend not marked seen in live-build (OK) dictionaries-common/default-wordlist marked seen in live-build (don't care?) nvidia-common/obsolete-driver not set to false in live-build (why was it?) gettext-base Auto-Installed: 0 in live-build iso-codes Auto-Installed: 0 in live-build libfreetype6 Auto-Installed: 0 in live-build libfuse2 Auto-Installed: 0 in live-build linux-headers-2.6.38-8 Auto-Installed: 1 in livecd-rootfs linux-headers-2.6.38-8-generic Auto-Installed: 1 in livecd-rootfs uuid-runtime Auto-Installed: 0 in live-build lots of English locales added to /var/lib/belocs/hashfile in live-build (OK?) zh_CN.utf8, zh_SG.utf8 added to /var/lib/belocs/list in live-build linux-image-2.6.38-8-generic, linux-base removed from /var/run/reboot-required.pkgs in live-build (don't care) compress initramfs with lzma More configuration required: --linux-packages
FoundationsTeam/Specs/SwitchToLiveBuild (last edited 2011-06-13 22:47:00 by 82-69-40-219)