On Saturday, Dec 10, 2022 at 8:31 PM, Louis Abel via rocky <rocky@lists.resf.org> wrote:

I believe this page explains how to do that: https://docs.cloudstack.apache.org/en/latest/installguide/hypervisor/kvm.html#configure-cpu-model-for-kvm-guest-optional

If I had to guess, setting guest.cpu.mode to "host-passthrough" will likely get you there. But if you have different varying hardware, "host-model" might be the better pick.

On Sat, 10 Dec 2022 at 13:40, Jeremy Hansen via rocky <rocky@lists.resf.org> wrote:

Looks like it’s supported by the host hardware on my CS hosts:

[root@netman ~]# cexecs cs: "/lib64/ld-linux-x86-64.so.2 --help | grep x86-64-v2"

************************ cs  ************************

--------- cm01---------

  x86-64-v2 (supported, searched)

--------- cm02---------

  x86-64-v2 (supported, searched)

--------- cn04---------

  x86-64-v2 (supported, searched)

--------- cn05---------

  x86-64-v2 (supported, searched)

--------- cn06---------

  x86-64-v2 (supported, searched)

--------- cn07---------

  x86-64-v2 (supported, searched)

I am running KVM.  Any idea how to incorporate using the ‘—cpu host’ option in a Cloudstack environment?

Thanks!

On Saturday, Dec 10, 2022 at 3:35 PM, Louis Abel via rocky <rocky@lists.resf.org> wrote:

Rocky Linux 9 has a hard requirement on x86-64-v2. If the processor does not support it, system won't boot nor run. There's no workarounds as this is built into glibc.

What I would do is verify that the host supports x86-64-v2. You can do this by running something like:

/lib64/ld-linux-x86-64.so.2 --help | grep supported

If x86-64-v2 shows as supported, then the host CPU will work for 9. It'll be a matter of configuring your VM's to use the host CPU instead of emulating another. (Eg in KVM you'd use --cpu host on the CLI).

On Sat, Dec 10, 2022, 13:25 Jeremy Hansen via rocky <rocky@lists.resf.org> wrote:

In an effort to troubleshoot this, I decided to launch a Rocky 8 vm and do a manual upgrade to Rocky 9.  While I understand this isn’t recommended, I thought perhaps it would reveal what the issue are.  After I started doing package upgrade, I noticed this:

Fatal glibc error: CPU does not support x86-64-v2

I suspect this is the root of my issues.  Can anyone explain this further?

Thanks

-jeremy

On Friday, Dec 09, 2022 at 8:13 PM, Jeremy Hansen <jeremy@skidrow.la> wrote:

I’m running Cloudstack 4.17.1.0 and for unknown reasons, I’m having issues running Rocky 9. Kernel begins to boot and then it looks like it fails on loading initrd and I get a kernel oops.  Just curious if this is a known issue or if there’s a work around. I tried using the qcow2 image from Rocky as well and just using the install iso to create a new image. Same result. 

Rocky 8 works fine. 

Thanks

-jeremy

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--

-L

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