LAVA 2023.06 is out and bring lot of performance  improvment.

But we should take care that current version lacked 2 DB migration which handled by a "django auto migrate", but need to be handled by the upgrade.

LAVA-docker need to handle that.

Upgrade procedure:

Major problem that could be encountered: The migration script hack fail to apply

=> A backup is necessary (as always )

=> After start, verification of logs will be necessary (to ensure upgrade is ok)

Before upgrade, some cleaning could help reduce the backup size:

LAVA has currently history up to 4 year, perhaps some part could be cleaned.

Cleaning old healthcheck:

lava-server manage jobs rm --submitter lava-health --older-than 30d

Cleaning old jobs:

lava-server manage jobs rm --submitter kernel-ci --older-than 700d

Compress jobs output:

lava-server manage jobs compress --older-than 1h

compressing jobs has no drawbacks

The upgrade path is:

• backup via backup.sh
• checkout lava-docker: branch agl-2023.10 (master + aglrefhw, pi4, rcar )
• copy old boards.yaml to boards.yaml   and backup to      lava-master/backup/
• Generate output via ./lavalab-gen.py
• build it in output/xxx/ via docker-compose build --no-cache
• docker-compose up