On Thu, May 12, 2022 at 11:35:44AM -0500, Ron Olson wrote:
> Hey all-
> I have a VM that I keep perpetually on Rawhide for testing that has
> working fine with updates until the latest 5.18 kernels; it just
> hangs. Nothing is shown on the screen, no kernel panics, just
> hangs. The VM is running on ESXi 6.0 on a X7350 Xeon (it’s a Dell
> PowerEdge R900 server FWIW), configured for 8 gig of ram, 8
> processors, and 90 gig of disk space. I’ve tried both rc6 kernels,
> as well as rc3 (that’s what’s showing up in grub), all hang. Only my
> ancient F33 rescue kernel works gets the VM to boot.
>
> For testing I built a new VM based on F35 on the same machine with
> the same specs, updated it to Rawhide, and I get the same behavior,
> just hangs with the rc6 kernel.
>
> Is there any troubleshooting tips I could try to figure out what’s
> going on? I’m worried that I’m hitting some
> too-new-kernel-on-ancient-hardware issue that will prevent using
> this machine with newer versions of Fedora.
First step is to attach a (virtual) serial console to the guest and
see if anything is printed. Hopefully grub and/or the kernel will
automatically recognise the serial console and use it, but it's
possible you might need to interrupt grub and add “console=ttyS0” to
the kernel command line.
If there are some messages but not enough for diagnosis, then remove
any “rhgb” and “quiet” and add “ignore_loglevel”.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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