Hi folks,
We held our regular design meeting today via Hangout. Summary of brief
discussion:
# 31st July 2019
# Using celery inside LAVA [Rémi]
Could be used for:
* Parsing description.yaml
* Replace crontabs
* Compressing logs
* Removing old jobs
* Sending logs to ES
* Splitting scheduling
* notifications
# August release ? [Steve]
Yes - aim for 28th
The release will have database changes
Tag the day before to let some time for lavafed to test the tag
# LAVA sessions for Connect [Steve]
Three sessions has been accepeted:
* LAVA Users' Forum
* Hacking and contributing to LAVA
* Advanced testing in python
# Support packages in Debian removed/being removed [Steve]
* lava-tool removed (https://tracker.debian.org/pkg/lava-tool)
* django-compat marked for removal (
https://tracker.debian.org/pkg/django-compat)
* django-hijack depends on django-compat, marked for removal too (
https://tracker.debian.org/pkg/django-hijack)
* Rémi will remove the dependency/mention
* VLANd needs some rework to go to [python 3](
https://git.lavasoftware.org/lava/vland/issues/5)
# Migrating to django 2.2 (next LTS release) [Milosz]
* lava source code itself is compatible with django 2.2
* Dependencies on filters and rest framework
* Still waiting for a release compatible with django 2.0
* Trying to contact the maintainer to give some help (if needed)
# gitlab-runner on aarch64 [Steve]
The current package in [Debian](
https://tracker.debian.org/pkg/gitlab-ci-multi-runner) was a bit too old.
GitLab don't provide anything for arm64 but the Debian maintainer uploaded
a new version that fixe our issues.
============================================================================
The LAVA design meeting is held weekly, every Wednesday at 13:00 to
14:00 UTC using Google Hangouts Meet: https://meet.google.com/qre-rgen-zwc
Feel free to comment here or join us directly in the meeting.
Minutes from this and previous meetings are also stored in the LAVA wiki:
https://git.lavasoftware.org/lava/lava/wikis/design-meetings/index
Cheers,
--
Rémi Duraffort
LAVA Team, Linaro
Hi folks,
We held our regular design meeting today via Hangout. Summary of brief
discussion:
# 24th July 2019
# install.git-deps [milosz]
This feature works nicely:
https://lkft.validation.linaro.org/scheduler/job/834097
Proposal: keep `install` option but restrict it so it’s not trying to
install system packages.
[Rémi] Will submit a patch to remove the “deprecation” warning in the
documentation.
# Authentication refactoring [milosz]
Under review by Remi. Looks good.
# Connect sessions where accepted [Rémi]
* LAVA users forum
* Hacking and contributing to LAVA
* Advanced testing in python
# Playing with Sentry error reporting [Rémi]
* Will create a ticket to have it installed in the linaro lab.
* Will create sentry.lavasoftware.org
* No debian package available for python3-sentry-sdk
* Should be installed from pip (sentry-sdk)
* Will send a patch to install sentry-sdk from pip in lava-server docker
container.
* Activate it for lavafed instances.
============================================================================
The LAVA design meeting is held weekly, every Wednesday at 13:00 to
14:00 UTC using Google Hangouts Meet: https://meet.google.com/qre-rgen-zwc
Feel free to comment here or join us directly in the meeting.
Minutes from this and previous meetings are also stored in the LAVA wiki:
https://git.lavasoftware.org/lava/lava/wikis/design-meetings/index
Cheers,
--
Rémi Duraffort
LAVA Team, Linaro
Hi folks,
We held our regular design meeting today via Hangout. Summary of
brief discussion:
# 17th July 2019
# Large job definitions causing outages [deanb]
* Issue: https://git.lavasoftware.org/lava/lava/issues/299
* Wondering if for large jobs (configurable limit) simply not making
ActionData objects is a sensible approach.
* Tried this:
https://git.lavasoftware.org/dean-birch/lava/commit/dd220c0bd82bf092e35e643…
* In my test instance this reduced outage to 30 seconds (from hours).
* If not, what else can we do?
* Anything extra needs to be added?
* Documentation?
* [deanb] will send a patch with the first improvements (CLoader)
* [deanb] will look at using bulk save to save all objects in one call
* [stevan] investigate ActionData: is it possible to create them later on
or even maybe not creating them?
# Test from inline with git [milosz]
The idea is to source test-definition YAML from inline but use git
repository to prepare overlay. Example: https://github.com/andersson/bootrr
Bjorn doesn’t want to have YAML file in this repository
[Rémi] Using install.git-repos might work
*
https://git.lavasoftware.org/lava/lava/blob/master/lava_dispatcher/tests/te…
*
https://docs.lavasoftware.org/lava/lava_test_shell.html#adding-git-bzr-repo…
[milosz] will try install.git-repos
If that’s working Rémi will add some tests in lavafed or meta-lava
# Switching between serial connections on device with multiple UARTs
[Malcolm Brooks]
* Issue: We have devices which use separate serial outputs for MCC, AP and
SCP UARTs.
* Workaround: Use the `new_connection` boot method to switch between UART1
and UART2 in order to catch the kernel booting once MCC flash stage is
complete.
* Idea: Allow all connections (or possibly a subset defined in the
“connection_tags” for example) to be established and followed from the
beginning of the job, and allow each action/stage to select which they are
actually listening/interacting with the `connection` option (example below).
```yaml
- boot:
namespace: target
connection: uart1
method: minimal
```
[Rémi] Sounds like a good idea.
* Using feedback LAVA can already use one connection and listen/print the
other ones
* Malcom will create an issue on gitlab.
============================================================================
The LAVA design meeting is held weekly, every Wednesday at 13:00 to
14:00 UTC using Google Hangouts Meet: https://meet.google.com/qre-rgen-zwc
Feel free to comment here or join us directly in the meeting.
Minutes from this and previous meetings are also stored in the LAVA wiki:
https://git.lavasoftware.org/lava/lava/wikis/design-meetings/index
Cheers,
--
Rémi Duraffort
LAVA Team, Linaro
Hi All,
We've previously had an issue on our LAVA instance where it stopped
responding to workers and stopped dispatching jobs when it finished running
large job definition (around 25000 lines in the definition, around 1000
deploy/boot/test actions). I've been looking into reproducing this safely
in a development environment, and I've got a few observations and questions
about how the situation could be improved.
The lava-master process appears be stuck processing the job results, and
takes a painstakingly long time to finish this and send an ACK for END_OK.
During this processing, the master doesn't respond to worker pings, and
doesn't schedule other jobs. Tracking a bit deeper, it seems that the vast
majority of time (I've never seen it finish as I have always restarted the
lava services before it finishes) in the walk_actions and build_action
functions of the lava_results_app/dbutils.py file:
https://git.lavasoftware.org/lava/lava/blob/2019.05.post1/lava_results_app/…https://git.lavasoftware.org/lava/lava/blob/2019.05.post1/lava_results_app/…
What options is there to mitigate this issue? Some ideas below:
- Could we optimize the build_action function? There are a few Django
model/db queries in build_action, could some results be queried once and
cached? With an obscenely large job, would this even give us enough savings
to make the time invested in safely optimizing this worth it?
- What are the implications of not having created ActionData objects for a
job? Does this mean that no options will be available in the "Pipeline ↓"
drop-down on the job page for quick navigation? Could we optionally abort
after a certain amount of these (and make it configurable per LAVA
instance)?
- Should/could the handling of the results be forked off, so lava-master
can continue to schedule more jobs and respond to worker pings, but slowly
the ActionData objects can be populated? I'm unsure if you have to be on a
special thread to write to Django models. Even if this could be done, would
any weird behaviours occur on the slave side as it will still be waiting
for the ACK for END_OK from the master?
Any guidance on how to proceed with this would be appreciated! I'm happy to
place this and some more details in as a LAVA issue on git.lavasoftware.org
if this is easier to track and discuss.
Thanks,
Dean
Hi folks,
As Rémi and Stevan are both out and we don't have any items listed for
discussion in advance, I'm cancelling today's design meeting.
Cheers,
--
Steve McIntyre steve.mcintyre(a)linaro.org
<http://www.linaro.org/> Linaro.org | Open source software for ARM SoCs
Hi folks,
We held our regular design meeting today via Hangout. Summary of brief
discussion:
3rd July 2019
1. [Rémi] 2019.07 release?
1. Should we do one?
2. Most people will be out for most of the month
3. Maybe worth it for the LITE group (depends on the number of
patches).
4. Steve back from DebConf on the 28th, but…
5. Yes: releasing around the 18th
2. [Rémi] Debian buster is due soon
1. Basing the docker image on Buster?
2. No, wait for a little bit. Maybe 2019.08?
3. Staging is already running Buster, main v.l.o is still on Stretch
but the lab team will want to upgrade soon
4. How long do we support stretch-backports?
5. Add buster-backports soon, as new uploads will hit Debian
unstable (---> Bullseye).
6. Target 2019.08 at all three releases (stretch-backports,
buster-backports, bullseye)
3. [Rémi] Recommendations about VACUUM ANALYZE
1. This should be run regularly (every day) on busy instances to
clean up
2. Add a thing in the docs, test in the lab
3. See https://www.postgresql.org/docs/11/sql-vacuum.html for more
info - does a VACUUM then ANALYZE without the old data.
4. Lets the DB self-optimise for performance
4. [Rémi] Using git submodule to include docker sources into lava
sources
1. Still a separate repository
2. The exact commit hash used for the lava docker image is now known
and reproducible.
1. This is the main reason
2. Using version.py on the last commit of the docker directory
can also work.
3. See https://git.lavasoftware.org/lava/lava/merge_requests/637
4. Let's go with this instead of git submodule, it works fine
============================================================================
The LAVA design meeting is held weekly, every Wednesday at 13:00 to
14:00 UTC using Google Hangouts Meet: https://meet.google.com/qre-rgen-zwc
Feel free to comment here or join us directly in the meeting.
Minutes from this and previous meetings are also stored in the LAVA wiki:
https://git.lavasoftware.org/lava/lava/wikis/design-meetings/index
Cheers,
--
Steve McIntyre steve.mcintyre(a)linaro.org
<http://www.linaro.org/> Linaro.org | Open source software for ARM SoCs
