Re: [RFC] Yocto Autobuilder and LAVA Integration


Anibal Limon
 



On Mon, 25 Nov 2019 at 10:23, Nicolas Dechesne <nicolas.dechesne@...> wrote:
hey,


On Mon, Nov 25, 2019 at 2:49 AM Chan, Aaron Chun Yew
<aaron.chun.yew.chan@...> wrote:
>
> Hi Anibal.
>
>
>
> Hope that all is well with you and good to hear from someone from the community.
>
>
>
> We are maintaining our own LAVA server/dispatcher and only the administrator can create a user account for you.
>
> With the access, each user can create their own authentication tokens. Steps are:
>
>
>
> API (tab) à Authentication Tokens à New (+) à Enter the Description of new token à Copy the token
>
>
>
> You can define the server URL and token into the yoctoabb/config.py like this:
>
>
>
> “lava-server”: {
>
>     “server”:  “https://staging.validation.linaro.org/”,
>
>     “token”: <New Generated User Token>
>
> },
>
> “artifactorial”: {
>
>    “server”: “https://archive.validation.linaro.org/artifacts/team/qa/2019/11/24/12/28/”,
>
>    “token”: <New Generated User Token>
>
> }
>
>
>
> To summarize on what had just mentioned about a year ago, the concept is that if your hardware is located on a remote site,
>
> we need to have user access to the LAVA server in order to schedule task/jobs and to retrieve the IP addr on the device
>
> which allow host to connect to the device on the network where both servers can communicate with each other.

Can you please summarize/explain how the device under test is being
used during the testing? The devices we have in our LAVA lab instance
are generally not accessible from the outside world with SSH. I think
I remember that SSH access was required to run the tests, but I am not
sure about the details.

Aaron is explaining the current implementation in the Yocto Autobuilder it relays of being in the same network/access with LAVA and the tests are driven only by OE testimage and right
it requires to have SSH access details.
 

The way we (Linaro) run tests on our devices in our LAVA lab (that
includes all kind of tests, such as kernel only, but also YP/OE based,
Android, ... ) is that the device under test is controlled via the
serial console, not SSH. The test is driven from a LAVA test case
definition. Do you think we can modify the YP ABB to behave in a
similar way? 

We can run OE ptest on the OE images that we built, here is an example
of LAVA test case that shows ptest was run:
https://validation.linaro.org/results/1890697/0_linux-ptest

To run ptest, we are using the following LAVA test definition (snippet):
https://github.com/Linaro/test-definitions/blob/master/automated/linux/ptest/ptest.yaml

which in turns use this test execution script:
https://github.com/Linaro/test-definitions/blob/master/automated/linux/ptest/ptest.py

LAVA was essentially designed to be used with a test definition, and I
was hoping we would find a way to integrate and link YP ABB 'output'
with LAVA in this way.

What do you think?

>
>
>
> We had also done publishing the artifacts into Artifactorial (similar to https://archive.validation.linaro.org/directories/),
>
> Artifactorial uses curl command to upload/download artifacts store on the remote server, we can  definitely integrate
>
> a python script using pycurl.
>
> However the setback on Artifactorial is that it creates a timestamp based on /<path>/<year>/<month>/<day>/<hour>/<minute>/<seconds>
>
> which can be tricky at times which automation may require to handle as we do not want to pick up the wrong image and flash into the
>
> hardware (e.g. beaglebone).
>
>
>
> On another approach you can bring up your own LAVA server thru Docker - https://hub.docker.com/r/lavasoftware/lava-server
>
> We had also explore this option in the past and its working for us. This way you can have access control and miniture board farm which you
>
> can run tests on, if we do not have the hardware which you require you may still need to have access to staging linaro LAVA server.
>
>
>
> Lastly, you may consider to have access to LAVA dispatcher on Linaro end, as “board_info.json” is generated on the hardware booted on Yocto
>
> will contain board information which maybe helpful in the future. The dispatcher holds the rootfs of the image were local results/data are stored.
>
> For do_testimage the results are already handle by the bitbake framework and does not require the effort to retrieve the results.
>
>
>
> Cheers,
>
> Aaron
>
> Open Source Technology Center Intel
>
>
>
> From: Anibal Limon <anibal.limon@...>
> Sent: Sunday, November 24, 2019 2:40 AM
> To: Chan, Aaron Chun Yew <aaron.chun.yew.chan@...>
> Cc: Richard Purdie <richard.purdie@...>; yocto@...; Nicolas Dechesne <nicolas.dechesne@...>; Orling, Timothy T <timothy.t.orling@...>; Sangal, Apoorv <apoorv.sangal@...>
> Subject: Re: [RFC] Yocto Autobuilder and LAVA Integration
>
>
>
> + Yang Wang
>
>
>
> Yang and me have been discussing about this Integration work (bugzilla [1]) and trying to breakdown the tasks needed.
>
>
>
> Nico: Yang and me talk about will be if Yocto Project can get a token to access staging LAVA instance in order to test the integration. [2]
>
>
>
> [1] https://bugzilla.yoctoproject.org/show_bug.cgi?id=13016
>
> [2] https://staging.validation.linaro.org/
>
>
>
> On Fri, 9 Nov 2018 at 14:59, Anibal Limon <anibal.limon@...> wrote:
>
>
>
> On Thu, 8 Nov 2018 at 20:49, Chan, Aaron Chun Yew <aaron.chun.yew.chan@...> wrote:
>
> Hi Anibal/RP,
>
> > In order to do a distributed Boards testing the Yocto Autobuilder
> > needs to publish in some place accessible the artifacts (image,
> > kernel, etc) to flash/boot the board and the test suite expected to
> > execute.
>
> [Reply] That is correct, since Linaro have this in place to use https://archive.validation.linaro.org/directories/ and I have look into this as well, we can leverage on this
>               but I am up for any suggestion you might have. So the idea here is that we have a placeholder to store the publish artifacts remotely and deploy using
>               native curl command with token access. Then based on your LAVA job definitions we can instruct LAVA to source the images via https.
>               Having said that, the deploy stage in LAVA must have some capabilities to read a token file in the LAVA job defintion and pick up the binaries from public repo (git LFS).
>
>               In order for Board Distributed Tests to happen, there are 2 items in my wish lists
>
>               1. Public hosting of binary repository - with access control
>
>
>
> For publish the artifacts (Rootfs, Kernel image, Test suite), if there is a public build a token isn't needed like targeting some boards already commercialized and can be published anywhere like in http://downloads.yoctoproject.org.
>
>
>
>               2. Ease Handshaking between two(2) different systems CI (e.g. Jenkins/Autobuilder) with LAVA
>                    a. Exchange build property (metadata) - includes hardware info, system info
>
>
>
> You can add meta-data to a LAVA test definition.
>
>
>
>                    b. Test reporting results
>
>
>
> For notify job results LAVA test definition support the notify block in test jobs or you can poll the API using for both needs a LAVA token.
>
>
>
>
>
>
> > I created a simple LAVA test definition that allows run testimage
> > (oe-test runtime) in my own LAVA LAB, is very simplistic only has a
> > regex to parse results and uses lava-target-ip and lava-echo-ipv4 to
> > get target and server IP addresses.
>
> [Reply] Although the lava test shell have these capabilities to use lava-target-ip or/and lava-echo-ipv4 this only works within LAVA scope, the way we retrieve the Ipv4
>               address is reading the logs from LAVA thru XML-RPC and grep the pattern matching string which contains IP even before the HW get initialize entirely then parse
>               IP back to the Yocto Autobuilder.
>
>               http://git.yoctoproject.org/cgit/cgit.cgi/yocto-autobuilder-helper/tree/lava/trigger-lava-jobs
>
>
>
> Yes, that's my idea the Yocto Autobuilder dosen't need to know about particular network configuration in tha LAVA server for execute the job, in this way the Yocto Autobuilder can communicate with LAVA server to retrieve the testing job results, and in a case that needs to debug the board LAVA support hacking sessions to allow connect to the board outside the LAB.
>
>
>
> https://validation.linaro.org/static/docs/v2/hacking-session.html
>
>
>
>
>
> > Some of the tasks, I identified,  (if is accepted)
> >
> > - Yocto-aubuilder-helper: Implement/adapt to cover this new behavior ,
> > move the EXTRA_PLAIN_CMDS to a class.
> > - Poky/OE: Review/fix test-export or provide other mechanism to export
> > the test suite. > - Poky/OE: Review/fix test-export or provide other mechanism to export
> > the test suite.
>
> [Reply] I would like to understand further what is the implementation here and how it addresses the problems that we have today. I believe in the past, Tim has tried
>               to enable testexport and transfer the testexport into the DUT but it was not very successful and we found breakage.
>
>
>
> Agree, The testexport functionality is on not usage so there are some bugs on it.
>
>
>
> Yang commented me that He is using testexport but I agree that isn't not has full functionality as testimage, so in any case a mechanism to use the test suite + artifacts is needed, could
>
> be making a copy of full build environment (bitbake + layers + config) and compress in order be able to execute inside LAVA.
>
>
>
>
>
>
> > -  Yocto-aubuilder-helper: Create a better approach to re-use LAVA job
> > templates across boards.
>
> [Reply] I couldn’t be more supportive on this having a common LAVA job template across boards but I would like to stress this, we don’t exactly know how
>               community will define their own LAVA job definition, therefore what I had in mind as per today is to create a placeholde where LAVA job templates
>               can be define and other boards/community can reuse the same template if it fits their use cases. In general the templates we have today are
>               created to fit into Yocto Project use cases.
>
>
>
> Agree, I not mean a single template but a manner to add easily new LAVA templates for boards in Yocto Autobuilder, this involves some base LAVA job templates and a set of scripts to
>
> generate the final template, like you are doing. For example there are different ways to deploy a board but the login process is the same for core-image's (login as root wo passwd).
>
>
>
> Cheers,
>
> Anibal
>
>
>
>
> Lastly  there are some works I've done on provisiong QEMU on LAVA sourceing from Yocto Project public releases, I am looking at where we can upstream this
> https://github.com/lab-github/yoctoproject-lava-test-shell
>
> Thanks!
>
> Cheers,
> Aaron Chan
> Open Source Technology Center Intel
>
> -----Original Message-----
> From: richard.purdie@... [mailto:richard.purdie@...]
> Sent: Thursday, November 8, 2018 6:45 AM
> To: Anibal Limon <anibal.limon@...>; yocto@...
> Cc: Nicolas Dechesne <nicolas.dechesne@...>; Chan, Aaron Chun Yew <aaron.chun.yew.chan@...>
> Subject: Re: [RFC] Yocto Autobuilder and LAVA Integration
>
> Hi Anibal,
>
> On Wed, 2018-11-07 at 16:25 -0600, Anibal Limon wrote:
> > We know the need to execute OE testimage over real HW not only QEMU,
> >
> > I'm aware that currently there is an implementation on the Yocto
> > Autobuilder Helper , this initial implementation looks pretty well
> > separating parts for template generation [1] and the script to send
> > jobs to LAVA [2].
> >
> > There are some limitations.
> >
> > - Requires that the boards are accessible trough SSH (same network?)
> > by the Autobuilder, so no distributed LAB testing.
> > - LAVA doesn't know about test results because the execution is
> > injected via SSH.
> >
> > In order to do a distributed Boards testing the Yocto Autobuilder
> > needs to publish in some place accessible the artifacts (image,
> > kernel, etc) to flash/boot the board and the test suite expected to
> > execute.
> >
> > Currently there is a functionality called testexport (not too
> > used/maintained) that allows you to export the test suite.
>
> I continue to have mixed feelings about testexport. It adds complexity but I'm not sure its actually worth it.
>
> An alternative would be to specify a set of commit hashes for the configuration under test (poky or oe-core+bitbake and any other layers), then have LAVA obtain those pieces and run the tests directly.
>
> Its worth considering that we already now have two difference pieces of code trying to package up the build system/layers, eSDK and testexport.
> Ideally if we had some kind of standardised layer setup/configuration approach we'd then just have a config file to share, then the tools could recreate the environment and allow the tests to be run there without testexport. Layer-setup is itself a harder subject but for example the layer setup code in autobuilder-helper could easily be reused as things stand today...
>
> In fact the more I think about it, the more I think we may want to do it that way...
>
> > I created a simple LAVA test definition that allows run testimage
> > (oe-test runtime) in my own LAVA LAB, is very simplistic only has a
> > regex to parse results and uses lava-target-ip and lava-echo-ipv4 to
> > get target and server IP addresses.
> >
> > In this way the LAVA server handles all the testing and finally the
> > Yocto Autobuilder can get/poll an event to know what was the actual
> > result of the job and the job could be send to different LAVA LAB's.
>
> That does sound useful and is likely a way we could end up doing this.
> Its probably worth highlighting that we now have a way of summarising the result of the test in the form of the json file the tests all generate. Sharing that back to the Yocto autobuilder would give us the test results we need.
>
> > Some of the tasks, I identified,  (if is accepted)
> >
> > - Yocto-aubuilder-helper: Implement/adapt to cover this new behavior ,
> > move the EXTRA_PLAIN_CMDS to a class.
> > -  Yocto-aubuilder-helper: Create a better approach to re-use LAVA job
> > templates across boards.
> > - Poky/OE: Review/fix test-export or provide other mechanism to export
> > the test suite.
>
> I think some of these are also independent of each other and good things to work on regardless...
>
> I would like to hear feedback from those at Intel using LAVA who submitted the existing code.
>
> Cheers,
>
> Richard

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