Block device handling can be somewhat complex - especially
when taking things like md, lvm or encryption into account.
This patch factors out the creation and deletion of the local
loop image device handling into a python library.
The main propose of this patch is to implement the needed
infrastructure. Based on this, more advanced functions can be added.
Example: (advanced) partitioning, LVM, handling different boot
scenarios (BIOS, UEFI, ...), possibility of handling multiple images
(local loop image, iSCSI, physical hard disk, ...), handling of
different filesystems for different partitions / LVs.
Change-Id: Ib626b36a00f8a5dc3dbde8df3e2619a2438eaaf1
Signed-off-by: Andreas Florath <andreas@florath.net>
These new variables are a list of elements chosen for the build along
with their full paths. For Python elements, IMAGE_ELEMENT_YAML is a
YAML formatted list that can be easily parsed. For bash elements,
"get_image_element_array" will produce an associative-array of the
same (working around lack of array export in Bash).
This list is intended for consumption of elements who need to copy
files from other elements, such as pkg-map and svc-map. As discussed
in I2a29861c67de2d25c595cb35d850e92807d26ac6, this list has already
been pruned and had overrides processed, so it is safe to simply walk
over this list with no further processing.
Since we're presenting the element list in a couple of different ways,
we combine it all into the element-info script. It will output an
eval-able string that declares the appropriate variables.
I've added some inline documentation so they still appear in grep.
The documentation is updated with examples, and moved to a more
appropriate location as a sub-section of the element sytle guide.
To test this out, use the associative-array in generate_hooks, where
we can now find the element's directory without searching.
Change-Id: Ibbd07d082ec827441def2d3f6240df3efdc6eae3
As motivation for this; we have had two breakouts of dib in recent
memory. One was a failure to unmount through symlinks in the core
code (I335316019ef948758392b03e91f9869102a472b9) and the other was
removing host keys on the build-system
(Ib01d71ff9415a0ae04d963f6e380aab9ac2260ce).
For the most part, dib runs unprivileged. Bits of the core code are
hopefully well tested (modulo bugs like the first one!). We give free
reign inside the chroot (although there is still some potential there
for adverse external affects via bind mounts). Where we could be a
bit safer (and could have prevented at least the second of these
breakouts) is with some better checking that the "sudo" calls
*outside* the chroot at least looked sane.
This adds a basic check that we're using chroot or image paths when
calling sudo in those parts of elements that run *outside* the chroot.
Various files are updated to accomodate this check; mostly by just
ignoring it for existing code (I have not audited these calls).
Nobody is pretending this type of checking makes dib magically safe,
or removes the issues with it needing to do things as root during the
build. But this can help find egregious errors like the key removal.
Change-Id: I161a5aea1d29dcdc7236f70d372c53246ec73749
Add documentation to our developer guide about not creating executables
before or after 10/90 in the upstream element's phase directories.
Change-Id: I93ab70f37da0d81f8683a76fd3b341b761ea04e9
This simplifies and enhances the functional-test runner script for
much better interactive behaviour and to give us the ability to better
choose what is running in CI.
Firstly, I have split the image-output testing into a separate script.
This is not actually part of the functional testing of elements and is
both logically and functionally different. It currently does not run
in upstream CI because we don't have docker in the images. I have
nothing against it, but it can be it's own thing.
run_functests.sh is overhauled to have a useful interactive interface,
e.g.
---
$ ./run_functests.sh -h
run_functests.sh [-h] [-l] <test> <test> ...
-h : show this help
-l : list available tests
<test> : functional test to run
Special test 'all' will run all tests
$ ./run_functests.sh -l
The available functional tests are:
apt-sources/test-sources
debian/build-succeeds
fedora/build-succeeds
fedora/build-succeeds-f21
ironic-agent/build-succeeds-fedora
---
As described there, you can run a single test, a number of tests, the
default tests (as CI will do) or all tests. Running all tests is too
much for regular CI, but currently the only way to stop a low priority
test running, or temporarily pause is to remove it completely --
clearly sub-optimal (see I93c2990472e88ab3e5ff14db56b4ff1b4dd965ef).
There is nothing complicated about this, and to further simplify I
have merged the runner functions back into run_functests.sh which
remains a very modest ~150 lines, with most of that being argument
sanity. With that and the image-format cleanup, we can remove the
indirection of the 3 small library files.
For consistency, I have renamed the "dib_functions_test" (that tests
things from the dib functions library) with a run_* prefix.
Because the default list is the same as the current functional tests
run, this does not modify the status-quo. I plan to modify this,
however, to run fedora-minimal & centos-minimal tests in a future
change, as these are required to be stable for openstack ci.
Documentation is updated, and a README.rst is added in the tests
directory for discoverability.
Change-Id: I86d208bd34ff09a29fdb916a4e7ef740c7f65af8
Now 'tox -efunc' can be invoked to run all functional tests in
the 'venv' tox environment. Also `tox -efunc element-name` can be
used to run function tests for one element (e.g. ironic-agent).
Change-Id: Ia685d1b2a7deef2f8b98876ac09792134dd30f2f
Augment the developing_elements.rst by taking advantage of Sphinx
markup. Most of the doc used to be in /README.md and thus did not
leverage on Sphinx.
Use inline codeblock to denote variables, files, command: ``foo``
Phase Subdirectories:
List phase names in the preliminary introduction
Get rid of lists in favor of definitions
Highlight whether the phase runs in or outside the chroot
Input parameters are now lists
Use definition lists in Dependencies and Ramdisk sections.
Link to elements README when they exist.
Testing Element: split into two subsections: 'shell' and 'python'.
Use "sourcecode:: sh" for the couple examples at the very top and very
bottom of the document.
Change-Id: I2421f76ec452cac243ccb2208f88c7d320ffedd3
The README.rst has a lot of information that has been duplicated in the
Sphinx maintained documentation (3600330).
Remove dupes from README.rst
Point to http://docs.openstack.org/developer/diskimage-builder/
Change summary:
=====================+======================================
README.md | Sphinx document
section |
=====================+======================================
Installation | installation.rst
---------------------+--------------------------------------
Invocation | invocation.rst
---------------------+--------------------------------------
Requirements | installation.rst Speedups
---------------------+--------------------------------------
Caches/offline | caches.rst + changes from 849e9cb2
| fix some markup
---------------------+--------------------------------------
Install Types | install_types.rst
---------------------+--------------------------------------
Writing an element | developing_elements.rst + fe7823a2
| `Testing element` from b9b6640f
| `3rd party elements' from f1e7bf3a
---------------------+--------------------------------------
Existing elements | elements.rst
---------------------+--------------------------------------
What tools are there | components.rst
---------------------+--------------------------------------
Design | design.rst
---------------------+--------------------------------------
Change-Id: I578daa8e3a8d876b3ee3c9a748d7c8aa2bf7a0b7
jenkin => jenkins
on ci.md
documention => documentation
on developer/caches.html
typicallly => typically
on developer/developing_elements.html
Closes-Bug: #1476993
Change-Id: Ie40205debad5dbc6074e65672e0f3ebeaee5b08e
Having data files in the phase subdirs is an easy source of confusion
in reviews (especially when the data file is a script) and theres really
no reason to be putting data files there at this point. Lets make a
convention out of not doing this.
Change-Id: I99571a2a49e14e8c709af20f6d13d662ac745eb4
Adding a test function which allows us to use elements to perform
element-specific tests. In order for this to work sanely, also adding
some configuration to our break system so we can assert on negative
tests.
Also adding a test for apt-sources to verify this code actually works.
Change-Id: I378a74255010eca192f5766b653f8a42404be5ea
Add a small documentation paragraph about the operating system elements,
what they are required to provide (and thus what other elements can rely
on).
This makes DISTRO_NAME a prime-class variable, which can now be assumed
to always exists (it was de-facto required so far).
Change-Id: Iffbc69de0516b58bfde48e87cd73073428d66b05
Set the pbr option 'warnerrors' to make build_sphinx turns warnings into
error. Fix all warnings.
`tox -edocs` will thus abort whenever someone introduce a new error.
Change-Id: Id6d09768a241866e1fdc1a1e2bf90336f5c5087d
Our docs are very developer focused. Lets create a separate user guide
to help new users get started.
Change-Id: I8a03920e6d3306dd0405177875ea55ccb4b40fea
