16.04 server can't reboot

[sles]

Hello!

I run 5 (five) Ubuntu 16.04 VMs on Centos7 host, i.e. inside of kvm.
After several months of uptime I can't shutdown or reboot any of this VMs-
if I type reboot or shutdown then it runs forever...
No error messages, nothing...

Thank you!

[Valeri Rangelov (valeri.rangelov)]

May I ask you for your VM setup, host or anything else which can point to something specific. Is it working with one / few days uptime of VM ?

[sles (slesru)]

Hello!

I don't see any specific in my setup, it is just Centos 7.
VMs are created from virt-manager.
Btw, other VM, namely Oracle Linux, which uses systemd too, can be rebooted without problems.
And yes, reboot works after 2-3 days uptime.
And I don't think this is VM related, I just mentioned this to make sure it is not hardware related.

Thank you!

[Valeri Rangelov (valeri.rangelov)]

Hi,

What is the uptime of the affected VMs?

[sles (slesru)]

As I said - several months.
Right now it is just days, because I rebooted them by "powering off" from virt-manager.

[sles (slesru)]

OK, 59 days is not enough:

root@jabber:~# uptime
 13:30:35 up 59 days, 23:59, 1 user, load average: 0,01, 0,02, 0,00
root@jabber:~# sync
root@jabber:~# sync
root@jabber:~# reboot
Connection to jabber closed by remote host.
Connection to jabber closed.

I.e. reboot is OK, will try tomorrow on 2 other servers.

[sles (slesru)]

two other servers had uptime 56 days.
also rebooted without problems.

[Launchpad Janitor (janitor)]

[Expired for systemd (Ubuntu) because there has been no activity for 60 days.]