I’ve run CentOS VPSs for many years with Ionos and reboots have always been blissfully quick and painless but in the last year or so, and notably since moving to Rocky Linux 9, it seems that after a week or more of uptime a cli reboot appears to shutdown fine but does not ever reboot. I have to go i…

If with a vps you might have luck installing the upower package: dnf install -y upower systemctl enable --now upower but a lot of this can also depend on the hardware or the way the hypervisor underneath is configured. I’ve got a dedicated server with a certain VPS provider which will reboot with…

Ya, physical servers are fine for me, too. AI says there’s something about the hypervisor (qemu, kvm, etc.) that’s causing problems. A local VirtualBox host I run doesn’t have this problem with Rocky Linux, either.

To be fair, the long-uptime-specific behaviour points to the reboot method that the kernel uses to actually trigger the hardware restart. On KVM/QEMU hypervisors like Ionos uses, the default PCI reboot method sometimes fails to signal the hypervisor correctly after the system has been running for a …

[image] shovas: Ya, physical servers are fine for me, too. Mine’s actually different, I have a physical server at a hosting provider that doesn’t reboot so for this one it’s potentially something with the hardware or firmware. But I have installed upower on it to see if it will make a differ…

If I understand correctly, modern kernels default to acpi, and mine wasn’t specified in the grub file, so I added reboot=pci. It rebooted fine (which it does shortly after a hanging reboot and a force server restart) so we’ll see in a week, I guess. Thanks for the instructions.

reboot=pci didn’t work. Based on what I’m seeing, it’s a qemu host misconfiguration issue which I won’t be able to fix from my side. I’ll see if submitting a support ticket helps. Thought there was something of interest here but it also seems to be about the host: [image] R…

Thanks for the tip. Lots of handy nuggets in that thread but I can’t see anything obviously amiss based on it. I can’t see anything in my logs about any errors around reboots. From what I can see and experience, reboots shutdown completely fine but the actual reboot never happens. During this time,…

The key takeaway would be to check if your root partition is referenced somewhere by device name like /dev/sda1 and not its UUID or by logical volume name. This could be the case in cloud images. If you had two disks they might get assigned a different device name during boot (sdb instead of sda etc…

Doesn’t look like that’s the case: ▶ Summary I had the reboot freeze after 4 days uptime. I wasn’t able to watch the Ionos web remote console because it was already frozen. I’m sure this is the area (host-guest interaction) where the problem lies but I just don’t know enough about it. After manuall…

Ionos VPS with Rocky Linux 9 hang during cli reboot

Rocky Linux Help & Support

hs303 April 21, 2026, 12:41pm 8

Are you sure it does not boot again? Can you see the output of the console? If you have multiple disks you could have problems similar to those described in this topic:

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Ionos VPS with Rocky Linux 9 hang during cli reboot

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