Qemu@SSH Connection failed while buliding diskImage using Packer for full system simu. about gem5

[Harshil2107]

I think that the reason packer is stuck on waiting for ssh could be due to either ubuntu not being installed correctly thus not booting properly or network not being initialized correctly. I would suggest adding a display as a qemu arg and using a vnc viewer to look at the install process.

In gem5 resources there we have disk images made via packer, I suggest taking a look at those as well: https://github.com/gem5/gem5-resources/tree/885e91ae8fa7003fddb9f78771049a7650ab6468/src/x86-ubuntu

[haotianmichael]

Thank you very much~The Problem has been solved.It turned out that ssh_wait_timeout is not long enough, I guess it's because qemu would spend more time withtcg accelerator than in kvm. So the ssh must wait for a long time? Because my server doesn't supoort kvm for some reason, so I set ssh_wait_timeout to 180m and update the scripts, now it works!

[haotianmichael]

And do you know there will be some simulation precision losing becase of the abscence of kvm? I'm trying to get accurate branch miss data of gem5's Minor core of which the workload is a binary mm2, I'm wondering if the data is not that accurate if I build a diskImage with kvm acc disabled. Thanks for your precious time again!