HassOS REL-4 developer release

[pvizeli]

Hi

For everyone they have an interest, HassOS REL-4 first developer release is out. The images support:
- C2
- N2
- XU4

It uses Linux 5.4 mainline and u-boot 2020.01

Links:
- https://home-assistant.io/hassio
- https://github.com/home-assistant/hasso ... es/tag/4.0

[mad_ady]

Thanks for maintaining it. It makes it easier for people to get into home automation.

[mad_ady]

I see that the N2 is a supported (and recommended) device for Home Assistant, and got some publicity: https://www.home-assistant.io/blog/2020 ... other-news
@pvizelli - have you had a chance to test HassOS flashed to usb disk and booted by petitboot? (viewtopic.php?f=182&p=278060#p278060).

[pepeEL]

Anybody test it to boot it from USB SSD ?

[pvizeli]

I've not tested the petitboot. However, our u-boot script should support it.

Will try it in next days.

[pvizeli]

petitboot did not detect a system now over USB.

I can provide an u-boot.bin on first partition, would be nice if petitboot pick that up and boot. Is that possible?

[mad_ady]

As far as I know petitboot does not use uboot from the target device (it's built into the spi flash). It searches and parses boot.ini and boot.scr from known locations and builds new boot command lines based on what it finds. It uses kexec to load the kernel/dtb/initrd.
But upgrade your petitboot to the latest 2020 version because there were some parsing issues with older versions.

[pepeEL]

I have installed latest version Petitboot 20200118 and try boot from USB SSD but no boot. Not found....

IMG_20200122_092721.jpg (176.72 KiB) Viewed 101 times

Pvizeli please share this u-boot.bin i can test it...

[tobetter]

@pvizeli, I have questions about HASSOS how it works.

1. How the firmware/OS can be updated if new version is released? Is there an updating software on HASSOS itself? I am seeing that the HASSOS uses a seamless software update if my understanding is correct, what I am curious is that how yet another OS partitions are accessed when update is required. Do you use like /dev/mmcblk nodes or something else?

2. In the boot.ini, I found the command usb start. What is this for? Only to scan USB devices and storage?

3. I am seeing that HASSOS uses the squashfs, it probably the root file system and whole firmware is loaded to memory and running in the memory itself. Is there a heavy disk I/O happens while HASSOS is running? Does it mount another file system to the root file system?

[mad_ady]

HassOS runs some services in docker. Not sure where the docker volumes get mounted to, but some of them may be IO heavy (things like mysql, influxdb, etc).