Thanks for reply. I made the steps in that post and Pi booted.
However all docker containers failed to start: hassio_supervisor
was trying to start every few second without success.
This was the output of docker events
2022-03-11T15:40:23.179487749+01:00 container create a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827 (image=homeassistant/aarch64-hassio-supervisor, io.hass.arch=aarch64, io.hass.base.arch=aarch64, io.hass.base.image=homeassistant/aarch64-base:3.14, io.hass.base.name=python, io.hass.base.version=2022.02.0, io.hass.type=supervisor, io.hass.version=2022.03.3, name=hassio_supervisor, org.opencontainers.image.authors=The Home Assistant Authors, org.opencontainers.image.created=2022-03-10 12:24:42+00:00, org.opencontainers.image.description=Container-based system for managing Home Assistant Core installation, org.opencontainers.image.documentation=https://www.home-assistant.io/docs/, org.opencontainers.image.licenses=Apache License 2.0, org.opencontainers.image.source=https://github.com/home-assistant/supervisor, org.opencontainers.image.title=Home Assistant Supervisor, org.opencontainers.image.url=https://www.home-assistant.io/, org.opencontainers.image.version=2022.03.3)
2022-03-11T15:40:23.182858877+01:00 container attach a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827 (image=homeassistant/aarch64-hassio-supervisor, io.hass.arch=aarch64, io.hass.base.arch=aarch64, io.hass.base.image=homeassistant/aarch64-base:3.14, io.hass.base.name=python, io.hass.base.version=2022.02.0, io.hass.type=supervisor, io.hass.version=2022.03.3, name=hassio_supervisor, org.opencontainers.image.authors=The Home Assistant Authors, org.opencontainers.image.created=2022-03-10 12:24:42+00:00, org.opencontainers.image.description=Container-based system for managing Home Assistant Core installation, org.opencontainers.image.documentation=https://www.home-assistant.io/docs/, org.opencontainers.image.licenses=Apache License 2.0, org.opencontainers.image.source=https://github.com/home-assistant/supervisor, org.opencontainers.image.title=Home Assistant Supervisor, org.opencontainers.image.url=https://www.home-assistant.io/, org.opencontainers.image.version=2022.03.3)
2022-03-11T15:40:23.226870461+01:00 network connect caf4ec5ffcf6e30ae7ce4433a4e1000935c8f2173388a05693f1a58083d81e2c (container=a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827, name=bridge, type=bridge)
2022-03-11T15:40:23.861375470+01:00 network disconnect caf4ec5ffcf6e30ae7ce4433a4e1000935c8f2173388a05693f1a58083d81e2c (container=a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827, name=bridge, type=bridge)
2022-03-11T15:40:29.820824826+01:00 container attach a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827 (image=homeassistant/aarch64-hassio-supervisor, io.hass.arch=aarch64, io.hass.base.arch=aarch64, io.hass.base.image=homeassistant/aarch64-base:3.14, io.hass.base.name=python, io.hass.base.version=2022.02.0, io.hass.type=supervisor, io.hass.version=2022.03.3, name=hassio_supervisor, org.opencontainers.image.authors=The Home Assistant Authors, org.opencontainers.image.created=2022-03-10 12:24:42+00:00, org.opencontainers.image.description=Container-based system for managing Home Assistant Core installation, org.opencontainers.image.documentation=https://www.home-assistant.io/docs/, org.opencontainers.image.licenses=Apache License 2.0, org.opencontainers.image.source=https://github.com/home-assistant/supervisor, org.opencontainers.image.title=Home Assistant Supervisor, org.opencontainers.image.url=https://www.home-assistant.io/, org.opencontainers.image.version=2022.03.3)
2022-03-11T15:40:29.876597305+01:00 network connect caf4ec5ffcf6e30ae7ce4433a4e1000935c8f2173388a05693f1a58083d81e2c (container=a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827, name=bridge, type=bridge)
2022-03-11T15:40:30.065898273+01:00 network disconnect caf4ec5ffcf6e30ae7ce4433a4e1000935c8f2173388a05693f1a58083d81e2c (container=a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827, name=bridge, type=bridge)
2022-03-11T15:40:30.223447089+01:00 container destroy a3a47903e3879dc4cd2e0433ab254136bf9e312b0e7cc223a9f983655f68b827 (image=homeassistant/aarch64-hassio-supervisor, io.hass.arch=aarch64, io.hass.base.arch=aarch64, io.hass.base.image=homeassistant/aarch64-base:3.14, io.hass.base.name=python, io.hass.base.version=2022.02.0, io.hass.type=supervisor, io.hass.version=2022.03.3, name=hassio_supervisor, org.opencontainers.image.authors=The Home Assistant Authors, org.opencontainers.image.created=2022-03-10 12:24:42+00:00, org.opencontainers.image.description=Container-based system for managing Home Assistant Core installation, org.opencontainers.image.documentation=https://www.home-assistant.io/docs/, org.opencontainers.image.licenses=Apache License 2.0, org.opencontainers.image.source=https://github.com/home-assistant/supervisor, org.opencontainers.image.title=Home Assistant Supervisor, org.opencontainers.image.url=https://www.home-assistant.io/, org.opencontainers.image.version=2022.03.3)
2022-03-11T15:40:30.389909659+01:00 container create a6ed97dee7da931940bbad88e6d92385adba2b54225d8280fa564b269243402c (image=homeassistant/aarch64-hassio-supervisor, io.hass.arch=aarch64, io.hass.base.arch=aarch64, io.hass.base.image=homeassistant/aarch64-base:3.14, io.hass.base.name=python, io.hass.base.version=2022.02.0, io.hass.type=supervisor, io.hass.version=2022.03.3, name=hassio_supervisor, org.opencontainers.image.authors=The Home Assistant Authors, org.opencontainers.image.created=2022-03-10 12:24:42+00:00, org.opencontainers.image.description=Container-based system for managing Home Assistant Core installation, org.opencontainers.image.documentation=https://www.home-assistant.io/docs/, org.opencontainers.image.licenses=Apache License 2.0, org.opencontainers.image.source=https://github.com/home-assistant/supervisor, org.opencontainers.image.title=Home Assistant Supervisor, org.opencontainers.image.url=https://www.home-assistant.io/, org.opencontainers.image.version=2022.03.3)
It’s likely I had problems in the past with docker because…
root@homeassistant:~# apt-mark showhold
containerd.io
docker-ce
docker-ce-cli
After unholding these and upgrading, containers now start again.
Unfortunately there are other problems. Home Assistant become unresponsive (http or even SSH) some time after every reboot. It seems it’s busy in something. Maybe MariaDB addon?
It’s this related to the upgrade? How to further diagnose and solve?