Re: Rawhide kernel issues
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
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