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Re: [Fedora-livecd-list] pilgrim livecd work

On Wed, 2006-09-20 at 11:53 -0400, David Zeuthen wrote:
> On Wed, 2006-09-20 at 20:43 +0530, Rahul wrote:
> > How do you plan on performing upgrades when the live cd gets a install 
> > to hard disk feature?
> Well, I've written about that in the README.fedora file. Lemme
> cut'n'paste so people can rip it apart. It's basically just a braindump,
> I haven't written code for this just yet (patches welcome!). 
> So.. my plan basically just involves running 'yum -y update' in the
> chroot you install to. Not sure we need any UI, some progress feedback
> would be nice, not sure if yum can do that already. Seth?
> Specifically this means that once you boot into the installed OS all
> updates will have been applied. Clearly this requires network
> connectivity but such is life. I also expect that it's feasible to do

Right; we certainly can't fit all Fedora Core packages on one LiveCD,
since a LiveCD is obviously only _one_ CD.  So you'd never be able to
upgrade off packages from a CD.  Furthermore with Extras its highly
likely that people have packages from Extras, and that doesn't fit on a
CD either.

About the only reasons you might _ever_ want to update from a LiveCD are
(a) to test your hardware with the new kernel, and to (b) see what new
apps and features are around, before you actually do the update.  I
don't see what is all that useful about doing the actual update from
from the LiveCD itself though, versus rebooting and running a small tool
to pull down new .repo files and doing the equivalent of 'yum update'
which other tools already do for us.

What's the use-case here for update from a LiveCD anyway?  Why?


> e.g weekly livecd respins we in four months ppl downloading the "FC6
> Desktop" livecd will already get the updates minus perhaps a week. But
> they'll be able to update.
> > - Can probably start writing the scripts and UI that will wrap libraries
> >   from gnome-diskutil. Suggest this script
> >   This script should
> >    - take some parameters
> >      --target-partition=/dev/sda1
> >      --install-bootloader-at-mbr=true|false
> >      --fs-label=LabelToUseForFS
> >      [--swap-device=/dev/sda2]
> >      --i18n=da_DK.UTF-8
> >      --root-passwd (probably safer to pass it on stdin)
> >    - verify that target partition given is large enough
> >    - dd the ext3 fs over to the target partition
> >    - resize2fs the fs
> >    - mount this at /mnt/target
> >    - delete files specific to livecd; that is
> >      - /mnt/target/etc/udev/rules.d/00-livecd.rules
> >      - /mnt/target/etc/init.d/livecd
> >      - /mnt/target/etc/rc5.d/livecd
> >      - (TODO: keep this list in sync with script and with what junk
> >         we put in the pristine ext3 fs.)
> >    - rewrite /mnt/target/etc/sysconfig/i18n
> >    - rewrite /mnt/target/etc/fstab (if no swap device is given use
> >      a swap file on the target fs. No, Swap Files Are Not Evil(tm),
> >      get over it :-)
> >    - run /sbin/mkinitrd in the /mnt/target chroot
> >    - set the root password
> >    - touch a file on /mnt/target so firstboot is run (TODO: need to
> >      either put firstboot on the live cd or make firstboot redundant.)
> >    - write /mnt/target/boot/grub/grub.conf
> >    - run /sbin/grub-install from /mnt/target/ chroot
> >    - run 'yum update' in the /mnt/target chroot if we have network
> >      connectivity. This is to update the installed OS with the latest
> >      security / feature patches etc. etc. 
> >    - probably need to include yum-updatesd but disable at livecd usage
> >      since the install system will need it
> >   Also
> >    - script should be invoked via a D-BUS system bus service so the
> >      GUI bits for doing the install become trivial
> >    - provide reasonable progress feedback / error reporting
> >    - need to write this tool with paranoia in mind; we're talking about
> >      messing with people's data here
> Cheers,
> David

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