[systemd-devel] systemctl daemon-reexec forgets running services and starts everything new

[Michael Biebl]

Am Mo., 10. Apr. 2023 um 09:46 Uhr schrieb Mantas Mikulėnas <grawity at gmail.com>:
>
> On Tue, Apr 4, 2023 at 11:33 AM Wasser, Erik <ewasser at maxcluster.de> wrote:
>>
>> # Some details to the hardware #
>>
>> Our metal runs OpenVZ/Virtuozzo with this kernel (without any problems):
>>
>> > Linux FQDN_REDACTED 3.10.0-1127.18.2.vz7.163.46 #1 SMP Fri Nov 20 21:47:55 MSK 2020 x86_64 x86_64 x86_64 GNU/Linux
>>
>> The container with the `systemctl daemon-reexec` problem reports the
>> following kernel:
>>
>> Linux FQDN_REDACTED 5.4.0 #1 SMP Thu Apr 22 16:18:59 MSK 2021 x86_64
>> x86_64 x86_64 GNU/Linux
>
>
> Hold on a moment – if it is actually an *OpenVZ container*, not a VM, how/why is it even reporting a different kernel than the host OS? Isn't the entire point of OpenVZ to share a single kernel with the guest containers? Is it actually 3.10 *pretending* to be 5.4 just to make it pass systemd's kernel version checks?

https://forum.openvz.org/index.php?t=msg&th=13275&goto=52802&#msg_52802

Interesting...