Q: Kernel being used in VM

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Ulrich Windl

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Dec 20, 2020, 7:26:03 PM12/20/20
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Hi!

I wonder: What sense is in updating the kernel in a VM (e.g. fedora-32)
when that kernel isn't used when booting the VM?

For example:
user@sys-firewall ~]$ rpm -qa kernel\*
kernel-core-5.9.11-100.fc32.x86_64
kernel-5.9.12-100.fc32.x86_64
kernel-modules-5.9.14-100.fc32.x86_64
kernel-modules-5.9.11-100.fc32.x86_64
kernel-headers-5.9.13-100.fc32.x86_64
kernel-devel-5.9.11-100.fc32.x86_64
kernel-debug-devel-5.9.11-100.fc32.x86_64
kernel-modules-5.9.12-100.fc32.x86_64
kernel-devel-5.9.12-100.fc32.x86_64
kernel-devel-5.9.14-100.fc32.x86_64
kernel-core-5.9.12-100.fc32.x86_64
kernel-5.9.14-100.fc32.x86_64
kernel-core-5.9.14-100.fc32.x86_64
kernel-debug-devel-5.9.14-100.fc32.x86_64
kernel-5.9.11-100.fc32.x86_64
kernel-debug-devel-5.9.12-100.fc32.x86_64
[user@sys-firewall ~]$ uname -a
Linux sys-firewall 4.19.155-1.pvops.qubes.x86_64 #1 SMP Mon Nov 9
06:37:34 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

Regards,
Ulrich

Mike Keehan

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Dec 21, 2020, 7:45:08 AM12/21/20
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On 12/21/20 12:23 AM, Ulrich Windl wrote:
> Hi!
>
> I wonder: What sense is in updating the kernel in a VM (e.g. fedora-32)
> when that kernel isn't used when booting the VM?
>

The VM's package manager can be told not to update specified packages,
if that is what you want.

Mike.

David Hobach

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Dec 21, 2020, 8:51:37 AM12/21/20
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On 12/21/20 1:45 PM, Mike Keehan wrote:
> On 12/21/20 12:23 AM, Ulrich Windl wrote:
>> Hi!
>>
>> I wonder: What sense is in updating the kernel in a VM (e.g. fedora-32) when that kernel isn't used when booting the VM?
>>

It's only for standalone VMs IIRC.
Uninstalling them shouldn't hurt if you don't use any standalone VM.

awokd

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Dec 21, 2020, 4:44:40 PM12/21/20
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David Hobach:
Like David suggests, leaving them installed can help if you ever want to
convert/clone the template to a standalone.

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Ulrich Windl

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Dec 29, 2020, 12:25:59 PM12/29/20
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On 12/21/20 1:45 PM, Mike Keehan wrote:
No, specifically for sys-net I wonder what the great support for newer
hardware is worth when an old kernel is being used.

>
> Mike.
>
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