[Bug 1730642] Re: Support generating a rootfs tree only

[Launchpad Bug Tracker]

This bug was fixed in the package livecd-rootfs - 2.441.10

---
livecd-rootfs (2.441.10) zesty; urgency=medium

  * For the IMAGEFORMAT=none parts to work for ubuntu-image classic builds, we
need to make sure IMAGEFORMAT is preserved and not overwritten if defined.
Backporting from artful.

livecd-rootfs (2.441.9) zesty; urgency=medium

  [ Gary Wang ]
  * Add the IMAGEFORMAT=none to support generating a single rootfs
(LP: #1730642)

 -- Łukasz 'sil2100' Zemczak   Tue, 21 Nov
2017 16:56:58 +0100

** Changed in: livecd-rootfs (Ubuntu Zesty)
   Status: Fix Committed => Fix Released

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

13:11 < xnox> sil2100, it has never passed.
13:11 < xnox> sil2100, "default-bootstraps   SKIP Test requires machine-level 
isolation but testbed does not provide that" it used "always-skip", now it is 
in fact "always failed"
13:12 < xnox> sil2100, the reason why it fails on zesty, has been fixed but has 
not yet been SRUed. =/
13:12 < xnox> sil2100, i will try to SRU that fix.

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

Quickly looking at the s390x livecd-rootfs failure, it doesn't seem to
be related to any of the changes that have been made by the new version.
It seems that during bootstrapping, udev is failing to configure
properly. I'll ask xnox to maybe take a look at it and see what could be
the reason. That being said, I'd opt for adding a hint on this as it's
certainly unrelated.

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[Bug 1730642] Re: Support generating a rootfs tree only

[Launchpad Bug Tracker]

This bug was fixed in the package livecd-rootfs - 2.408.24

---
livecd-rootfs (2.408.24) xenial; urgency=medium

  * For the IMAGEFORMAT=none parts to work for ubuntu-image classic builds, we
need to make sure IMAGEFORMAT is preserved and not overwritten if defined.
Backporting from artful.

livecd-rootfs (2.408.23) xenial; urgency=medium

  [ Gary Wang ]
  * Add the IMAGEFORMAT=none to support generating a single rootfs
(LP: #1730642)

  [ Christopher Glass (Ubuntu) ]
  * Backport "minimized round 2" changes from trunk to Xenial (LP: #1731492)
  * Remove apt, debconf, dpkg cruft files from /var/cache and /var/lib in
all our livefses.
  * Pass --cache false to lb config; otherwise we copy around caches of
.debs that are never used properly, and which prevent us from emptying
/var/cache/apt in images.
  * When building minimized cloud images, remove various packages that we
don't want installed by default.  Some are tools that aren't needed for
non-interactive use; some are libraries whose reverse-dependencies
will have already been removed; and one, open-vm-tools, should only be
included in images that are targeted to VMWare (which is not the case
for any of the current minimal images), rather than being included
directly in the cloud-image seed.

 -- Łukasz 'sil2100' Zemczak   Tue, 21 Nov
2017 17:01:14 +0100

** Changed in: livecd-rootfs (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

Verification xenial (package version 2.408.24):

$ cp -a `dpkg -L livecd-rootfs | grep "auto$"` .
$ sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE=xenial lb config
[2017-11-21 22:00:52] lb_config 
P: Executing auto/config script.
Building on xenial-test.canonistack
[2017-11-21 22:00:52] lb_config noauto --mode ubuntu --distribution xenial 
--bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source 
false --build-with-chroot false --apt-source-archives false --linux-flavours 
virtual --initsystem none --bootloader none --initramfs-compression lzma 
--cache false --chroot-filesystem none --initramfs=none --system=normal 
--hdd-label=cloudimg-rootfs --ext-resize-blocks=536870912 --ext-block-size=4096 
--ext-fudge-factor=15
P: Considering defaults defined in /etc/live/build.conf
P: Updating config tree for a ubuntu/amd64 system
$ sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE=xenial lb config
(...)
$ ls chroot/
bin   dev  homelibmedia  opt   root  sbin  srv  tmp  var
boot  etc  initrd.img  lib64  mntproc  run   snap  sys  usr  vmlinuz
$ ls config/hooks/ | grep binary
$

** Tags removed: verification-needed-xenial
** Tags added: verification-done-xenial

** Tags removed: verification-needed

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

Verification zesty (package version 2.441.10):

$ cp -a `dpkg -L livecd-rootfs | grep "auto$"` .
$ sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE=zesty lb config
[2017-11-21 22:40:28] lb_config
P: Executing auto/config script.
Building on zesty-test.canonistack
[2017-11-21 10:40:28] lb_config noauto --mode ubuntu --distribution zesty 
--bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source 
false --build-with-chroot false --apt-source-archives false --linux-flavours 
virtual --initsystem none --bootloader none --initramfs-compression lzma 
--initramfs none --chroot-filesystem ext4 --initramfs=none --system=normal 
--hdd-label=cloudimg-rootfs --ext-resize-blocks=536870912 --ext-block-size=4096 
--ext-fudge-factor=15
P: Considering defaults defined in /etc/live/build.conf
P: Updating config tree for a ubuntu/amd64 system
$ sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE=zesty lb build
(...)
$ ls chroot/
bin   dev  homelibmedia  opt   root  sbin  srv  tmp  var
boot  etc  initrd.img  lib64  mntproc  run   snap  sys  usr  vmlinuz
$ ls config/hooks/ | grep binary
$

** Tags removed: verification-needed-zesty
** Tags added: verification-done-zesty

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Title:
  Support generating a rootfs tree only

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[Bug 1730642] Re: Support generating a rootfs tree only

[Steve Langasek]

Hello Łukasz, or anyone else affected,

Accepted livecd-rootfs into zesty-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.441.10 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-zesty to verification-done-zesty. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-zesty. In either case, details of your testing
will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Tags removed: verification-failed-zesty
** Tags added: verification-needed-zesty

** Tags removed: verification-failed-xenial
** Tags added: verification-needed-xenial

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Title:
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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

** Description changed:

  [Impact]
  
  For the use of ubuntu-image classic image generation, it is required
  that livecd-rootfs supports a way to only generate the rootfs tree for a
  selected set of arguments (project, architecture etc.). By design
  ubuntu-image will use livecd-rootfs for preparation of the rootfs
  contents and then continue with building the image. Since ubuntu-image
  is backported feature-complete into artful, zesty and xenial, we would
  need the same change to be propagated to those stable series.
  
  [Test Case]
  
   * Install livecd-rootfs from -proposed
   * Create a temporary directory, cd into it
   * cp -a `dpkg -L livecd-rootfs | grep "auto$"` .
   * sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb 
config
   * sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb 
build
   * Make sure the build succeeds and that the current directory will have a 
chroot/ with the build rootfs contents
+  * Make sure that there config/hooks/ directory has no binary hooks
  
  [Regression Potential]
  
  The proposed change should be self-contained and not affecting any other
  code paths, but in the case of a very unlikely situation regular image
  builds could be broken by binary hooks not being executed.

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

I know now why it all worked for artful and bionic - there is a
conditional that preserves the IMAGEFORMAT for artful+ which is missing
from the earlier versions. Backporting that and re-releasing.

** Tags removed: verification-needed-xenial verification-needed-zesty
** Tags added: verification-failed-xenial verification-failed-zesty

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

Ok, I noticed an issue with Gary's branch right now. I didn't see this
during artful verification as the verification steps are missing one
check and in artful the whole lb build has passed successfully. But on
zesty I noticed that lb build failed on running a *binary* hook. All
binary hooks should have been removed due to the changes, but they're
not!

The reason is that both Gary and Steve didn't see that actually then we
set IMAGEFORMAT=none, for PROJECT=ubuntu-cpc in auto/config IMAGEFORMAT
is hard-coded back to ext4. This should not happen. Sadly I'll have to
fail this update...

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Title:
  Support generating a rootfs tree only

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

** Description changed:

  [Impact]
  
  For the use of ubuntu-image classic image generation, it is required
  that livecd-rootfs supports a way to only generate the rootfs tree for a
  selected set of arguments (project, architecture etc.). By design
  ubuntu-image will use livecd-rootfs for preparation of the rootfs
  contents and then continue with building the image. Since ubuntu-image
  is backported feature-complete into artful, zesty and xenial, we would
  need the same change to be propagated to those stable series.
  
  [Test Case]
  
   * Install livecd-rootfs from -proposed
   * Create a temporary directory, cd into it
   * cp -a `dpkg -L livecd-rootfs | grep "auto$"` .
-  * PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb config
-  * PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb build
+  * sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb 
config
+  * sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb 
build
   * Make sure the build succeeds and that the current directory will have a 
chroot/ with the build rootfs contents
  
  [Regression Potential]
  
  The proposed change should be self-contained and not affecting any other
  code paths, but in the case of a very unlikely situation regular image
  builds could be broken by binary hooks not being executed.

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[Bug 1730642] Re: Support generating a rootfs tree only

[Launchpad Bug Tracker]

This bug was fixed in the package livecd-rootfs - 2.478.1

---
livecd-rootfs (2.478.1) artful; urgency=medium

  [ Gary Wang ]
  * Add the IMAGEFORMAT=none to support generating a single rootfs
(LP: #1730642)

 -- Łukasz 'sil2100' Zemczak   Wed, 08 Nov
2017 12:02:04 +0100

** Changed in: livecd-rootfs (Ubuntu Artful)
   Status: Fix Committed => Fix Released

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  Support generating a rootfs tree only

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[Bug 1730642] Re: Support generating a rootfs tree only

[Brian Murray]

Hello Łukasz, or anyone else affected,

Accepted livecd-rootfs into xenial-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.408.23 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-xenial to verification-done-xenial. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-xenial. In either case, details of your
testing will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: livecd-rootfs (Ubuntu Xenial)
   Status: Confirmed => Fix Committed

** Tags added: verification-needed-xenial

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[Bug 1730642] Re: Support generating a rootfs tree only

[Brian Murray]

Hello Łukasz, or anyone else affected,

Accepted livecd-rootfs into zesty-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.441.9 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-zesty to verification-done-zesty. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-zesty. In either case, details of your testing
will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: livecd-rootfs (Ubuntu Zesty)
   Status: Confirmed => Fix Committed

** Tags added: verification-needed-zesty

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[Bug 1730642] Re: Support generating a rootfs tree only

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: livecd-rootfs (Ubuntu Zesty)
   Status: New => Confirmed

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[Bug 1730642] Re: Support generating a rootfs tree only

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: livecd-rootfs (Ubuntu Xenial)
   Status: New => Confirmed

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

Artful verification (package version 2.478.1):

$ cp -a `dpkg -L livecd-rootfs | grep "auto$"` .
$ sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE=artful ARCH=amd64 
lb config
[2017-11-15 11:29:05] lb_config 
P: Executing auto/config script.
Building on amatsu
[2017-11-15 11:29:05] lb_config noauto --mode ubuntu --distribution artful 
--bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source 
false --build-with-chroot false --apt-source-archives false --linux-flavours 
virtual --initsystem none --bootloader none --initramfs-compression lzma 
--chroot-filesystem none --initramfs=none --system=normal 
--hdd-label=cloudimg-rootfs --ext-resize-blocks=536870912 --ext-block-size=4096 
--ext-fudge-factor=15
P: Considering defaults defined in /etc/live/build.conf
P: Updating config tree for a ubuntu/amd64 system
$ sudo PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE=artful ARCH=amd64 
lb build
(...)
$ ls chroot/
bin   dev  homelibmedia  opt   root  sbin  srv  tmp  var
boot  etc  initrd.img  lib64  mntproc  run   snap  sys  usr  vmlinuz

The live-build succeeded and resulted in the rootfs in the chroot/
directory (without any final images) as expected.

** Tags removed: verification-needed-artful
** Tags added: verification-done-artful

** Description changed:

  [Impact]
  
  For the use of ubuntu-image classic image generation, it is required
  that livecd-rootfs supports a way to only generate the rootfs tree for a
  selected set of arguments (project, architecture etc.). By design
  ubuntu-image will use livecd-rootfs for preparation of the rootfs
  contents and then continue with building the image. Since ubuntu-image
  is backported feature-complete into artful, zesty and xenial, we would
  need the same change to be propagated to those stable series.
  
  [Test Case]
  
-  * Install livecd-rootfs from -proposed
-  * Create a temporary directory, cd into it
-  * cp -a `dpkg -L livecd-rootfs | grep "auto$"` .
-  * PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none lb config
-  * PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none lb build
-  * Make sure the build succeeds and that the current directory will have a 
chroot/ with the build rootfs contents
+  * Install livecd-rootfs from -proposed
+  * Create a temporary directory, cd into it
+  * cp -a `dpkg -L livecd-rootfs | grep "auto$"` .
+  * PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb config
+  * PROJECT="ubuntu-cpc" ARCH=amd64 IMAGEFORMAT=none SUITE= lb build
+  * Make sure the build succeeds and that the current directory will have a 
chroot/ with the build rootfs contents
  
  [Regression Potential]
  
  The proposed change should be self-contained and not affecting any other
  code paths, but in the case of a very unlikely situation regular image
  builds could be broken by binary hooks not being executed.

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[Bug 1730642] Re: Support generating a rootfs tree only

[Andy Whitcroft]

Hello Łukasz, or anyone else affected,

Accepted livecd-rootfs into artful-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.478.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-artful to verification-done-artful. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-artful. In either case, details of your
testing will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: livecd-rootfs (Ubuntu Artful)
   Status: New => Fix Committed

** Tags added: verification-needed verification-needed-artful

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  Support generating a rootfs tree only

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

You can invoke ubuntu-image for a classic image build right now. Yes,
you need a specific gadget tree, but it doesn't require any additional
special infrastructure to get such a gadget tree prepared. For instance,
for testing purposes we already use a custom gadget tree that's
available https://github.com/sil2100/pc-amd64-gadget . I would not like
to block 1.2 on something that is not required for ubuntu-image to work.
Yes, it would be more convenient to have livecd-rootfs do the gadget
tree setup for people, but ubuntu-image is designed such that one can
just run it by hand with a selected gadget tree and get the resulting
image.

For instance, with the current livecd-rootfs you get a working classic image if 
you run this:
sudo ./ubuntu-image classic --project ubuntu-cpc 
https://github.com/sil2100/pc-amd64-gadget.git

I see it this way: for snap-based images we also don't require people to
run ubuntu-image through livecd-rootfs, manually you also have to
somehow 'fetch' by yourself a fitting model assertion and feed it to the
command. In this case you need to give it a specific gadget tree, but
that's all doable.

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Title:
  Support generating a rootfs tree only

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Re: [Bug 1730642] Re: Support generating a rootfs tree only

[Steve Langasek]

On Wed, Nov 08, 2017 at 10:09:42AM -, Łukasz Zemczak wrote:
> In my opinion it is not required for us to wait on that as this change
> is not needed for ubuntu-image classic build support to work. Without
> the support for invoking ubuntu-image for builds in livecd-rootfs users
> can still invoke ubuntu-image directly to get a working classic image
> generated. This way we can release ubuntu-image, get more global testing
> from users and only then switch certain projects in livecd-rootfs to use
> ubuntu-image instead of the regular mechanisms.

My point is that "switching projects in livecd-rootfs" involves additional
development work that has not yet been done; you can't just invoke
ubuntu-image for a classic image build yet because you need to set up the
gadget tree, which there is no code yet to facilitate.

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Title:
  Support generating a rootfs tree only

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

In my opinion it is not required for us to wait on that as this change
is not needed for ubuntu-image classic build support to work. Without
the support for invoking ubuntu-image for builds in livecd-rootfs users
can still invoke ubuntu-image directly to get a working classic image
generated. This way we can release ubuntu-image, get more global testing
from users and only then switch certain projects in livecd-rootfs to use
ubuntu-image instead of the regular mechanisms.

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Title:
  Support generating a rootfs tree only

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[Bug 1730642] Re: Support generating a rootfs tree only

[Steve Langasek]

To my understanding, the other piece of this in livecd-rootfs - support
for setting up the trees and invoking ubuntu-image as part of a livefs
build - has not yet landed.  Should it, before we settle on SRUing this?

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  Support generating a rootfs tree only

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[Bug 1730642] Re: Support generating a rootfs tree only

[Łukasz Zemczak]

livecd-rootfs (2.480) bionic; urgency=medium

  [ Gary Wang ]
  * Add the IMAGEFORMAT=none to support generating a single rootfs.

 -- Steve Langasek   Mon, 06 Nov 2017
11:12:45 -0800

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  Support generating a rootfs tree only

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