usb drive with iso seems to be single use

[agracey]

What steps did you take and what happened: When I burn an iso to a USB drive then boot a NUC with it something seems to happen and I can't boot a second time without burning again.

What did you expect to happen: I would expect that the USB can be used many times without issue.

Anything else you would like to add: This seems to be new behavior in 0.6.0 or the newer Teal image.

NUCs use /dev/nvme0n1

Machine Registration:

apiVersion: elemental.cattle.io/v1beta1
kind: MachineRegistration
metadata:
  name: homelab
  namespace: fleet-default
spec:
  config:
    cloud-config:
      registration: {}
      users:
      - name: root
        passwd: root
    elemental:
      install:
        device: /dev/nvme0n1
        eject-cd: true
        poweroff: true
      registration: {}
      system-agent: {}
  machineInventoryLabels:
    registration: homelab
    serialNumber: ${Base Board Information/Serial Number}
  machineName: homelab-${Base Board Information/Serial Number}

I will keep this iso around in case anyone wants to shoulder surf to diagnose

Environment:

• Elemental release version (use cat /etc/os-release): 0.6.0
• Rancher version: 2.6.7
• Kubernetes version (use kubectl version): 1.22.x? (I need to upgrade again...)
• Cloud provider or hardware configuration: Digital Ocean for upstream cluster, Intel NUCs for downstream machines

[davidcassany]

What steps did you take and what happened: When I burn an iso to a USB drive then boot a NUC with it something seems to happen and I can't boot a second time without burning again.

Weird, did it happen after the installation or just with a simple boot?

[agracey]

After installation.

I could switch the auto-install flag and see if it happens after a simple boot as well. I'm running low on time this week so it might be a bit before I can try it though :(

[davidcassany]

I could not reproduce it on my libvirt env (I set added a real USB from plugged in my host into the VM for that). After the installation it reboots to the actual installed disk and if on early boot and get into the OVMF menu and I choose to boot from the USB it just works as expected...

I used the and ISO build from rancher/elemental-cli#336, the mentioned PR changes the ISO setup, however I doubt this has any relation to the issue reported here.

[agracey]

I wonder if there's only an issue with real hardware?

[agracey]

From a test with @Itxaka earlier this morning: after a bios change (that shouldn't have mattered), I can't reproduce again. Closing until I can...

[kkaempf]

after a bios change (that shouldn't have mattered)

Which BIOS setting was changed ??

[Itxaka]

Which BIOS setting was changed

I don't think this is relevant as each motherboard has a different efi settings, so it may not be applicable to others. Same thing as comparing ovmf efi settings with any others, they just won't match.

[agracey]

For posterity, I turned on the EUFI shell boot option...

My only guess is that something was weird with the boot order prior and that change fixed it? I had previously changed some boot order options but was seeing the issue even when selecting the boot device manually (via holding F10 at boot). Super weird 🤷‍♂️