my OS hanged (on qemu): how can I see more about what it is waiting for

[gcalliet]

Hello,

I try on ProxMox a little bit strange OS: OpenVMS. Something works in the boot but it hangs. (OpenVMS is supported on KVM, vmWare, VirtualBox since about 6 months).

I think it is waiting for a resource in a way impossible for the configuration. The OpenVMS support will soon answer me on what it is waiting. Is there way to understand from the ProxMox/qemu perspective what it is doing, for what it is waiting. I see one of the 4 cpu used at 100% and nothing is done.

 

[LnxBil]

Is there way to understand from the ProxMox/qemu perspective what it is doing, for what it is waiting.

Yes, via the QEMU monitor. You can inspect the hardware, but it may not be what you want. This is low level register and memory stuff.

If you want to know what the OS is doing, you need to debug it from the OS side. I never worked with OpenVMS, but for unix-like systems you can always use a serial debug console, maybe something like that is also possible with OpenVMS.