Re: kexec not working in xen domU?

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On Mon, Dec 14, 2020 at 5:25 PM Phillip Susi <phill@xxxxxxxxxxxx> wrote:
> The regular xen cosole should work for this shouldn't it?  So
> earlyprintk=hvc0 I guess?  I also threw in console=hvc0 and loglevel=7:
>
> [  184.734810] systemd-shutdown[1]: Syncing filesystems and block
> devices.
> [  185.772511] systemd-shutdown[1]: Sending SIGTERM to remaining
> processes...
> [  185.896957] systemd-shutdown[1]: Sending SIGKILL to remaining
> processes...
> [  185.901111] systemd-shutdown[1]: Unmounting file systems.
> [  185.902180] [1035]: Remounting '/' read-only in with options
> 'errors=remount-ro'.
> [  185.990634] EXT4-fs (xvda1): re-mounted. Opts: errors=remount-ro
> [  186.002373] systemd-shutdown[1]: All filesystems unmounted.
> [  186.002411] systemd-shutdown[1]: Deactivating swaps.
> [  186.002502] systemd-shutdown[1]: All swaps deactivated.
> [  186.002529] systemd-shutdown[1]: Detaching loop devices.
> [  186.002699] systemd-shutdown[1]: All loop devices detached.
> [  186.002727] systemd-shutdown[1]: Stopping MD devices.
> [  186.002814] systemd-shutdown[1]: All MD devices stopped.
> [  186.002840] systemd-shutdown[1]: Detaching DM devices.
> [  186.002974] systemd-shutdown[1]: All DM devices detached.
> [  186.003017] systemd-shutdown[1]: All filesystems, swaps, loop
> devices, MD devices and DM devices detached.
> [  186.168475] systemd-shutdown[1]: Syncing filesystems and block
> devices.
> [  186.169150] systemd-shutdown[1]: Rebooting with kexec.
> [  186.418653] xenbus_probe_frontend: xenbus_frontend_dev_shutdown:
> device/vbd/5632: Initialising != Connected, skipping
> [  186.427377] kexec_core: Starting new kernel
>

Hm..not many prints, either earlyprintk didn't work, or it's a really
early boot issue. Might worth to investigate if it's not a purgatory
issue too - did you try to use the ""new"" kexec syscall, by running
"kexec -s -l" instead of just "kexec -l" ?
Also, worth to try that with upstream kernel and kexec-tools - I
assume you're doing that already?

Cheers,


Guilherme

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