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Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz

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On Sun, 12 Dec 2021, Andy Smith wrote:

> Hi Tim,
>
> On Fri, Dec 10, 2021 at 10:11:04PM +0000, Tim Woodall wrote:
>> Is there a simple way to tell if the kernel/hypervisor that was used to
>> boot is the one currently installed in /boot.
>
> I do not do this - I build my own hypervisor packages when there is
> an upstream XSA that affects me and then I have to schedule downtime
> to boot into it, so I am well aware of what is booted into what.
>
> However, it seems you can read the ELF build ID from the kernel file
> and also from "xl info" (or /sys/hypervisor/properties/buildid if
> you decode it). Please see attached file check_running_hypervisor.sh
> for an example.
>
Awesome! Thank you.

Tim.

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telling if we've actually booted from /boot/xen-4.14-amd64.gz Tim Woodall <debianuser@woodall.me.uk> - 2021-12-10 23:20 +0100
  Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Charles Curley <charlescurley@charlescurley.com> - 2021-12-11 04:40 +0100
    Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Tim Woodall <debianuser@woodall.me.uk> - 2021-12-11 07:00 +0100
      Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Charles Curley <charlescurley@charlescurley.com> - 2021-12-11 19:10 +0100
        Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Andrei POPESCU <andreimpopescu@gmail.com> - 2021-12-12 09:10 +0100
    Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Charles Curley <charlescurley@charlescurley.com> - 2021-12-11 22:00 +0100
  Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Andy Smith <andy@strugglers.net> - 2021-12-12 02:30 +0100
    Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Tim Woodall <debianuser@woodall.me.uk> - 2021-12-12 08:20 +0100
      Re: telling if we've actually booted from /boot/xen-4.14-amd64.gz Tim Woodall <debianuser@woodall.me.uk> - 2021-12-12 16:20 +0100

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