how do you reboot your linux VMs in hyper-v?

matteo nunziati

ok, stupid title

this is the issue:

brand new hyper-v server 2016
brand new ubuntu 16.04 server install (basic server+openssh)

I issue either "reboot" or "shutdown -r now", the system doesn't reboot it simply shutdown 9 on 10
hyper-v drivers are included in ubuntu and loaded:

user@zi-erp-as:~$ lsmod | grep hyp
hyperv_fb              20480  1
hid_hyperv             16384  0
hid                   118784  2 hid_hyperv,hid_generic
hyperv_keyboard        16384  0
hv_vmbus               90112  7 hv_balloon,hyperv_keyboard,hv_netvsc,hid_hyperv,hv_utils,hyperv_fb,hv_storvsc

reaaaallly strange... it seems an ACPI issue with the VM as now and then the reboot actually works.
no one encountered the issue yet?

EDIT:

in the while I've removed/edited a lot because I've been an idiot looking at wrong numbers and I've post other stuff which is simply wrong: previously I've cited wrong uptimes that's not right, uptimes are well recorded by VM. just reboot is an issue!

matteo nunziati

edited

matteo nunziati

ok, at least ubuntu records the reboots:

user@zi-erp-as:~$ last reboot
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:43   still running
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:42 - 09:43  (00:00)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:41 - 09:43  (00:01)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:37 - 09:43  (00:05)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:37 - 09:43  (00:06)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:35 - 09:43  (00:08)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:31 - 09:35  (00:03)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:28 - 09:35  (00:06)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:27 - 09:28  (00:00)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:26 - 09:27  (00:00)
reboot   system boot  4.4.0-66-generic Fri Mar 24 09:21 - 09:27  (00:06)
reboot   system boot  4.4.0-66-generic Fri Mar 24 08:59 - 09:20  (00:20)
reboot   system boot  4.4.0-66-generic Fri Mar 24 08:59 - 09:20  (00:20)
reboot   system boot  4.4.0-66-generic Fri Mar 24 08:59 - 08:59  (00:00)
reboot   system boot  4.4.0-66-generic Fri Mar 24 08:58 - 08:59  (00:00)
reboot   system boot  4.4.0-66-generic Fri Mar 24 08:57 - 08:58  (00:00)
reboot   system boot  4.4.0-66-generic Thu Mar 23 16:11 - 16:11  (00:00)
reboot   system boot  4.4.0-66-generic Thu Mar 23 16:10 - 16:11  (00:01)
reboot   system boot  4.4.0-66-generic Thu Mar 23 15:47 - 16:11  (00:24)
reboot   system boot  4.4.0-66-generic Thu Mar 23 15:39 - 16:11  (00:32)
reboot   system boot  4.4.0-66-generic Thu Mar 23 15:33 - 16:11  (00:38)
reboot   system boot  4.4.0-66-generic Thu Mar 23 15:11 - 16:11  (01:00)
reboot   system boot  4.4.0-66-generic Thu Mar 23 14:35 - 15:10  (00:35)

matteo nunziati

This post is deleted!

matteo nunziati

nothing new... reboot/shutdown -r just shuts down the machine.
[this is the SAM curse :P]

edit...

no it is not the SAM curse: even centos7 doesn't not reboot when asked...

matteo nunziati

ok, just installed a win server core 2012R2 VM. even this doesn't reboot

I'm surely doing something wrong but I really really don't know what and where to start searching for...

DustinB3403

Why doesn't sudo reboot now work?

DustinB3403

Or why aren't you able to reboot via the Hyper-V management interface?

matteo nunziati

@DustinB3403 because the machine shuts down but then it doesn't boot! it is like if you issue shutdown without -r.
This is the same with reboot or so. Also because all this commands are symlinks to systemctl.

there is something broken in the way hyper-v vUEFI is managed on ALL my VM.

DustinB3403

@matteo-nunziati curious...

DustinB3403

So if you did issue a reboot from the management interface, the VM just shuts down. Rather than actually rebooting.

Seems like a huge failure there if that's true. What hardware is hyper-v installed on?

matteo nunziati

@DustinB3403 said in how do you reboot your linux VMs in hyper-v?:

Or why aren't you able to reboot via the Hyper-V management interface?

what's this? I just have the "shutdown" button on the hyper-v GUI (win 10).
also if I enter a remote session in powershell and issue:

Restart-VM -Name VM-NAME-HERE

the machine shuts down it doesn't restart!

matteo nunziati

@DustinB3403 said in how do you reboot your linux VMs in hyper-v?:

So if you did issue a reboot from the management interface, the VM just shuts down. Rather than actually rebooting.

Seems like a huge failure there if that's true. What hardware is hyper-v installed on?

HPE DL380G9

I suppose something is broken in my setup: it is not possible people did notice this basic item!

DustinB3403

@matteo-nunziati said in how do you reboot your linux VMs in hyper-v?:

HPE DL380G9

According to the HPE HCL the hardware is fully supported...

Is anyone else experiencing the same results?

matteo nunziati

@DustinB3403 said in how do you reboot your linux VMs in hyper-v?:

@matteo-nunziati said in how do you reboot your linux VMs in hyper-v?:

HPE DL380G9

According to the HPE HCL the hardware is fully supported...

Is anyone else experiencing the same results?

found anything on the web, going to call HPE support... but I'm a bit in a hurry. hoped for a fast solution on-line

scottalanmiller

I've not heard of anyone having this issue. You might have something unique here.

matteo nunziati

@scottalanmiller said in how do you reboot your linux VMs in hyper-v?:

I've not heard of anyone having this issue. You might have something unique here.

yes. until it was ubuntu I was thinking about something strange in the vUEFI. but even win over win...

travisdh1

@scottalanmiller said in how do you reboot your linux VMs in hyper-v?:

I've not heard of anyone having this issue. You might have something unique here.

NOT what you want in IT. I'll be waiting to see what the problem is.

scottalanmiller

@matteo-nunziati said in how do you reboot your linux VMs in hyper-v?:

@scottalanmiller said in how do you reboot your linux VMs in hyper-v?:

I've not heard of anyone having this issue. You might have something unique here.

yes. until it was ubuntu I was thinking about something strange in the vUEFI. but even win over win...

If the VM does not start at all, then what is in the container won't be the issue.

matteo nunziati

mmm... got this:

Restart-VM -Name zi-erp-as

Confirm
Are you sure you want to restart virtual machine "zi-erp-as"?
[Y] Yes  [A] Yes to All  [H] Halt Command  [?] Guida (il valore predefinito è "Y"):
Restart-VM : 'zi-erp-as' failed to change state.
    + CategoryInfo          : NotSpecified: (:) [Restart-VM], VirtualizationException
    + FullyQualifiedErrorId : OperationFailed,Microsoft.HyperV.PowerShell.Commands.RestartVM

And the machine just stops.

Now performed a sequence of start-restart with no idle, just waiting in VM Manager to see the CPU go down and then fire the restart. So far so good... really weird. Let's the VM stay idle for a while and retry!

Yep! if the machine stays idle for a few tens of seconds everything go nuts:

Restart-VM -Name zi-erp-as

Confirm
Are you sure you want to restart virtual machine "zi-erp-as"?
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [?] Guida (il valore predefinito è "Y"):
Restart-VM : 'zi-erp-as' failed to change state.
    + CategoryInfo          : NotSpecified: (:) [Restart-VM], VirtualizationException
    + FullyQualifiedErrorId : OperationFailed,Microsoft.HyperV.PowerShell.Commands.RestartVM

Not this specific error but when people get this "change state" suggestions are to rebuild the machine but those are all brand new.

Apparently this is not the case with:

Stop-VM -Name zi-erp-as; Start-VM -Name zi-erp-as

But this is a no go for remote administration from within the VM. Need to sort this out