This hasn’t happened to me yet but I was just thinking about it. Let’s say you have a server with an iGPU, and you use GPU passthrough to let VMs use the iGPU. And then one day the host’s ssh server breaks, maybe you did something stupid or there was a bad update. Are you fucked? How could you possibly recover, with no display and no SSH? The only thing I can think of is setting up serial access for emergencies like this, but I rarely hear about serial access nowadays so I wonder if there’s some other solution here.

  • InEnduringGrowStrong@sh.itjust.works@sh.itjust.works
    3·
    12 days ago

    I passthrough a GPU (no iGPU on this mobo).
    It only hijacks the GPU when I start the VM, for which I haven’t configured autostart.
    Before the VM is started it’s showing the host prompt. It doesn’t return to the prompt if the VM is shutdown or crashed, but a reboot would, hence not autostarting that VM.
    If it got borked too much, putting a temporary GPU might be easier.

    Also, don’t break your ssh.
    Pretty easy with PKI auth.

    • berylenara@sh.itjust.worksOPEnglish
      1·
      12 days ago

      It only hijacks the GPU when I start the VM

      How did you do this? All the tutorials I read hijack the GPU at startup. Do you have to manually detach the GPU from the host before assigning it to the VM?