This is a small guide tested on Ubuntu Trusty 14.04 to rebuild packages from the Ubuntu Cloud Archive adding your own patches.
This is probably not the right way to build Ubuntu packages, but it worked for me :)
Most of the steps are done by the Vagrant bootstrap.sh script.
After cloning the repository start the ubuntu VM with vagrant up.
Login into the VM with vagrant ssh
At the first login prepare your env for trusty
sg sbuild
sbuild-update --keygen
mk-sbuild trusty
Now for example let's rebuild the cinder package
apt-get source --download-only cinder-volume
gbp import-dsc cinder_2015.1.3-0ubuntu1.dsc
After these two command you will have a cinder folder that is a git
repository. An upstream branch contains the software version from upstream,
and the master branch contains the debian version.
New debian/ubuntu packages are built to hold the patches in a special folder:
cd cinder/
ls debian/patches/
Add your patch in debian/patches/
You can use the special folder /vagrant to copy the files from the host to
the VM (see Vagrant docs for details)
Add the namefile of your patch to debian/patches/series
Commit your changes
git add debian/patches/*
git commit -m "Commit msg that makes sense"
Run this command to update the debian changelog
gbp dch
Eventually edit debian/changelog so that your package will have a proper
version name. In my cinder example the changelog looks like:
cinder (1:2015.1.3-0ubuntu1+switch0) trusty-kilo; urgency=medium
* RBD: Make snapshot_delete more robust
-- Saverio Proto <saverio.proto@switch.ch> Thu, 31 Mar 2016 20:18:06 +0000
cinder (1:2015.1.3-0ubuntu1) trusty-kilo; urgency=medium
* New upstream stable release (LP: #1559215).
-- James Page <james.page@ubuntu.com> Sat, 19 Mar 2016 08:54:31 +0000
Now commit your changes to the changelog
git add debian/changelog
git commit --amend
Start the build
sbuild-kilo -d trusty-amd64
If the build is successful you will find the new deb packages in the parent folder
ls ../