New image organization and snap format

[Manik Taneja]

Sweet, thanks for updating the team Michael!

On Thu, Dec 17, 2015 at 1:41 PM, Michael Vogt <michael.vogt at canonical.com>
wrote:

> On Tue, Nov 24, 2015 at 02:30:04PM +0100, Michael Vogt wrote:
> > On Wed, Nov 11, 2015 at 04:26:13PM -0200, Gustavo Niemeyer wrote:
> > > This is (perhaps) the last major change which I'd like to raise
> attention
> > > to, and it's perhaps one of the most disruptive and exciting ones too.
> > >
> > > In the coming weeks we'll be landing relevant changes related to how
> the
> > > ubuntu core image itself is organized, and also to the packaged format
> of
> > > snaps. The new format is not backwards compatible, but there are
> relevant
> > > benefits that will become apparent as that work lands and unrolls.
> Michael
> > > Vogt is leading these changes for quite some time now, and we're
> expecting
> > > them to become visible in the following weeks.
> >
> > We made some good progress here in the last few weeks and there is an
> > experimental "all-snap" image available at:
> [..]
>
> The all-snap image [1] has reached a new milestone, I pushed a new amd64
> image to:
>
>   https://people.canonical.com/~mvo/all-snaps/
>
> that boot directly from the squashfs kernel-snap using the grub loop
> mount support (no need to extract the kernel anymore). It also uses a
> squashfs based gadget snap and follows the snap package names
> discussed during the most recent snappy sprint.
>
> Here is what it looks like on amd64:
>
> """
> ubuntu at localhost:~$ snappy list
> Name               Date       Version   Developer
> canonical-linux-pc 2015-12-14 4.3.0-2-1 canonical
> ubuntu-core        2015-12-17 16.04.0-2 canonical
> canonical-pc       2015-12-17 2.1       canonical
> """
>
> Note that when looking at /boot/grub there is no unpacked
> kernel/initramfs anymore:
>
> """
> ubuntu at localhost:~$ ls /boot/grub/
> fonts  grub.cfg  grubenv  i386-pc  install.yaml  locale  x86_64-efi
> """
>
> I also pushed a new rpi2 all-snap image which looks like this:
> """
> ubuntu at localhost:~$ snappy list
> Name                   Date       Version      Developer
> canonical-linux-raspi2 2015-12-17 4.2.0-1014-2 canonical
> ubuntu-core-armhf      2015-12-17 16.04.0-2    canonical
> canonical-pi2          2015-12-17 2.2          canonical
> """
> There we do have to unpack the kernel/initrd as uboot does not support
> squashfs4.
>
> Updates from the store should work on both images (as long as we keep
> the snap package names :) But be warned that this is all pretty new
> stuff.
>
> Enjoy the new images!
>
> Cheers,
>  Michael
>
>
> [1] Created with lp:~snappy-dev/goget-ubuntu-touch/all-snaps
>
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