I HAVE WDS SERVER 2012R2 ONTHER MACHINE WINDOWS 8.1
I MAKE SYSPREP FOR WINDOWS 8.1 AND WHEN I WANT TO UPLOAD THAT WIM FILE TO WDS SERVER I GET THE DATA IS INVALID
↧
WDS ERROR
↧
WS2K19 Essentials Hyper-V powers down VM's each week
For the last month, something strange is happening with our new Hyper-V server. During the summer holidays we bought and installed a new physical server with Windows Server 2019 Essentials installed on it; on which we also enabled and configured the Hyper-V role. On that physical Hyper-V, we have three VM's running, which are:
1. Domain controller;
2. File sharing server, part of the domain;
3. App server, also part of the domain.
All of the three VM's also have Windows Server 2019 Essentials as OS. Each WS2K19 Essentials server has its own dedicated license.
Each monday between 9:30 am and 10:30 am the Hyper-V power downs both the File and App servers. When we look in the logs there isn't anything that explains the power down of the VM's. Updates are also disabled to make sure that isn't the culprit.
Does someone has any ideas of what might be wrong or where to look in what direction? I've been looking for over a month now and can't seem to find anything.
Thanks!
↧
↧
WDS ERROR
I HAVE TWO HYPER-V MACHINE (SERVER 2012 R2 - WINDOWS 8.1)
INSTALL WDS ON SERVER 2012 AND MAKE CONFIGURE THE WDS SERVER DONE NO PROBLEM
IN WINDOWS 8.1 MACHINE I MADE SYSPREP AND TURN OFF THAT MACHINE
WHEN I WANT TO UPLOADE THE IMAGE TO SERVER GET THE FOLLOWING ERROR
THE POERATION COMPLETD WITHE ERROR
TH DATA IS INVALID
↧
Windows server 2012 hyper-V - disable the failover cluster
Hello everyone,
Is there any way to disable the failover cluster on the hyper V windows server 2012?
I want to disable it in a virtual machine or if possible in a general way in the entire hyper-v cluster
Thanks in advanced
Manuel
Warm regards MeVs
↧
CSV STATUS_IO_TIMEOUT When starting a specific VM
Hi,
I have the strangest problem with a customers infrastructure that I can't seem to get to the bottom of.
Server OS Windows Server 2019 Standard
Two Servers in the cluster accessing the CSV on a Dell EMC SC277984 via iSCSI over a 10GB back bone.
Basically long story short, but when rebooting (the act of powering it on) a specific VM it causes the CSV to drain and produces a myriad of errors and mayhem, it takes the entire estate down for about 15 minutes whilst everything begins to resume and power up again.
This error is found in the event logs.
Cluster Shared Volume 'Volume1' ('Cluster Disk 2') has entered a paused state because of 'STATUS_IO_TIMEOUT(c00000b5)'. All I/O will temporarily be queued until a path to the volume is reestablished.
I have tried rebooting the SAN, rebooting the hosts running a Cluster Validation Test (passes with no errors)
I'm keen to try removing the role itself from the cluster and recreating the VM in hyper-V from scratch and re-attaching it's original disks but haven't had the opportunity to try this yet.
↧
↧
Server 2016 - Unable to apply checkpoints
We have a Server 2016 Hyper-V cluster (fully patched) with which we are experiencing issues applying checkpoints. If we manually create a production or standard checkpoint in Hyper-V manager on 2012R2/Server 2016 VMs we are unable to revert back to it. The error message we get is "An error occured while attempting to apply the checkpoint".
To simplify troubleshooting we have moved a Server 2016 VM out of the cluster and onto local storage, but with the same results. There doesn't appear to be much else to go on in the event viewer. Can anyone suggest a resolution please?
↧
a hypervisor has been detected. features required for hyper-v will not be displayed
I have a HP Proliant ML30 Gen10 and installed Microsoft Server 2016 Std. through the Intelligent Provisioning with Hyper-V. But after installation I cannot find the Hyper-V Management and in the System Information it says at the bottom: a hypervisor has been detected. features required for hyper-v will not be displayed. I called HP Support and they said the machine is supported for Hyper-V and that I should get a fix (software) for this problem? The CPU is Intel Xeon E2124. I thought it was a BIOS setting but HP said it was software related. Hopefully someone here knows the answer :-(.
↧
Network port error
Hi guys,
I had this network issue, When I wanted to start one of my VM operating system. It was showing me this kind of error (synthetic ethernet port failed to allocate resources while connection to a virtual network)
Try this if it works for you guys.
Go to virtual machine setting click on Network Adapter and change the virtual switch option to "Not connected" It worked for me. maybe this solution will help you guys too.
↧
Left over Snapshots files for a VM, filling volume
When a cluster volume got too full Veeam B&R started to fail on the affected VMs. I have moved some VMs to a different Volume to test that they will back up in the correct circumstances, but most of the extra space (unexpected) that's filled the volume is for a specific VM which has a lot of snapshot files left after the backup.
The VM itself is using AVHDX files instead of both its assigned VHDs.
Veeam Support told me to try shutting down the VM from Failover Cluster Manager (not the host OS) and that should merge the snapshots but this hasn't worked. Veeam said that anything beyond that could involve data loss and I should call Microsoft.
My understanding is that the VM needs to be shut down and that the avhdx files need to be converted to VHD files in order to resolve this issue. I am also warned that simply removing the unused avhdx files will cause the VM to fail.
I have also noted that if I try and move this VM it is showing only the avhdx files that are connected to the VM, and not any of the parents which I see for each avhdx that I've inspected on this machine.
This
↧
↧
HPE Smart Path and Storage Spaces Direct
Hello Guys,
does anyone have a recommendation on enabling or disabling SSD Smart Path on S2D-Nodes?
I know that it should be disabled f.e. for vSAN.
Thanks!
↧
Stuck " Connecting to virtual machine manager service ......", need to reboot host
I have another bad hyper-v bug
Sometimes, ramdomly, VM are not accessible, when we launch hyper-v 2019/2016 manager, we are stuck on:
" Connecting to virtual machine manager service ......"
During this time , VM doesn't respond
3 times in one week and on different hardware ( HP proliant gen 9 and Gen 10 )
Only way to solve this issue : Server Reboot !!
Regards
Cedric Beaumois
Cedric Beaumois
↧
Veeam leaves a Recovery Checkpoint after backup job is run?
Hello,
I tend to have a few VM's with "leftovers" from Veeam Backup Jobs - and the only way to delete them is by doing this :
https://blog.workinghardinit.work/2015/10/15/remove-lingering-backup-checkpoints-from-a-hyper-v-virtual-machine
Get-VMSnapshot -ComputerName "MyHyperVHost" -VMName "VMWithLingeringBackupCheckpoint" | Remove-VMSnapshot
Hyper-V is running on Server 2016 Datacenter with Veeam Backup and Replication 9.5 Update 3
https://www.veeam.com/kb2353
So - anyone else experiencing this?
↧
Performance & Best practices HYPER-V virtual switch
Hello,
For some time now, I have been wondering whether and how powerful the "private virtual switch" in HYPER-V is.
Here I have a HYPER-V server configuration (SM Server H11DSU, AMD EPYC 2x 16 Core, 256 GB RAM, VM all on NVMe) with VMs in file/print server, MS SQL Server and RDS structure.
All external users should access only via RDP to the RDS structure from an external LAN (1 GBE LAN).
So my idea is only connect the RDS server with the external LAN (HYPER-V switch external) and all other VMs connect via HYPER-V private switch (only internal in the VMs needed).
The HYPER-V privat virtual switch should be a 10GBE switch - right?
If so - the LAN speed test with the privat virtual switch are disastrous (tested with ipfer3). My privat virtual switch only achieves a throughput of 500-600 Mbps from VM to VM. So miles away from 10 GB/s.
What can be the cause of this?
Does anything still need to be optimized on the privat virtual switch? Or is the privat virtual switch always so bad in performance? Or is it better to use an external physical 10 GBE switch, even if I don't need it?
Thanks for your helps!
Danke und liebe Grüße Oliver Richter
↧
↧
VMs not restarting properly in Server 2016
I have several VMs running in Hyper-V on Server 2016 that we shutdown remotely and then reboot the host. They're all configured to automatically restart upon the host's reboot, with a startup delay varying between 30 and 600 seconds (each VM is different).
SOME of the VMs will happily restart. SOME of the VMs do not start at all.
Looking in the Hyper-V event logs, there are absolutely no errors or complaints logged at all. It's as if it never even tries to restart those VMs.
We're not doing anything weird storage-wise; all VMs are using the same HDD storage area. We're well within the available RAM of the host machine (128GB). There's nothing odd about their boot options. Several of these VMs are identically configured to each other, and one will start while the other won't.
What in the world is going on?
↧
Supported Guest OS for 2012R2 Hyper-V
Hey guys, I have a 2012 R2 Hyper-V / Fail over Cluster.
I'm looking to add a new DC / DFS server with the latest OS. I'm curious if running a 2019 Guest Server is supported running on a 2012R2 cluster. I'm hoping I don't have to upgrade the cluster to run a new VM (And I don't believe I need to, but I'd like some confirmation).
I see the two articles for supported guest OS, but they haven't been updated recently (for 2012R2):
and 2019 Cluster:
I'm sure it's possible, but is it "recommended" and/or "supported" by Microsoft?
↧
Windows Server 2019 Hyper-V: Questions about backup encryption
Hi,
we want to use Hyper-V with Windows Server 2019.
Is there a way to encrypt VM backups? Out-of-the-box, PowerShell or third party ?
Thanks for the answers.
Best Regards,
Ralf
↧
"Invisible" guest on Hyper-V host
Hello,
I am looking in my environment for a virtual Linux host that, according to its MAC address, is hosted on a Hyper-V machine running W2K8. The guest responds to ping and and MAC shows up in the range of MACs assigned in the Virtual Network Manager.
Yet, the machine is not visible in the Hyper-V manager (which is only holding six guests).
I'm thinking that in some manner the guest is hidden, but the Virtual Machine folders on disk show nothing strange.
We have managed switches and the port we see the MAC of interest on is connected to the Hyper-V box. It may be that one our "development geniuses" created a VM inside a VM that picked up that address. Unfortunately "Elvis has left the building".
The VM is running Linux from what I can see with Apache Tomcat as a web server since the only ports open on the VM are SSH and port 3000 for the Web App (Redmine).
And, sad to say, the vm stopped responding to ping after a Windows Update to the Hyper-V host. I have restarted all the guest VMs and have restarted the host with no positive results.
I am looking in my environment for a virtual Linux host that, according to its MAC address, is hosted on a Hyper-V machine running W2K8. The guest responds to ping and and MAC shows up in the range of MACs assigned in the Virtual Network Manager.
Yet, the machine is not visible in the Hyper-V manager (which is only holding six guests).
I'm thinking that in some manner the guest is hidden, but the Virtual Machine folders on disk show nothing strange.
We have managed switches and the port we see the MAC of interest on is connected to the Hyper-V box. It may be that one our "development geniuses" created a VM inside a VM that picked up that address. Unfortunately "Elvis has left the building".
The VM is running Linux from what I can see with Apache Tomcat as a web server since the only ports open on the VM are SSH and port 3000 for the Web App (Redmine).
And, sad to say, the vm stopped responding to ping after a Windows Update to the Hyper-V host. I have restarted all the guest VMs and have restarted the host with no positive results.
↧
↧
2012 R2 guest hangs at hyper-v logo
Windows Server 2012 R2 Host with GUI.
Windows Server 2012 R2 Guest with GUI.
When the guest is turned on, it gets to the Hyper-V log with the spinning circle and goes no further. The circle continues to spin. After rebooting the guest three times, the recovery console comes up. I can also enter the recovery console using the Windows Server 2012 R2 DVD/ISO.
ChkDsk says the disk is fine.
SCF /SCANNOW/ /OFFDIR /OFFWINDIR did fix some files but that didn't help.
I have reason to believe the last round of MS updates hosed the guest. Are there any boot logs I can check to see where boot is failing?
JamesNT
ATTENTION MODERATORS: I do indeed mark responses as answers after I have had time to test said response and verify that it works. Please do NOT assume you speak on my behalf by marking responses to my questions as answers. Mass-proposing responses as answers gets on my nerves, too. Thank you.
↧
Script to Detect No Heartbeat, Turn Off and Turn On VMs
Occasionally it happens that our VMs are non-responsive, Heartbeat is listed as "No contact"
Typically after MS updates and restarts.
At that point there's nothing to do but forcibly Turn Off the VM and Turn On.
I'm working on automating this process. I put together a Powershell script that seems to work but throws some errors. I could use some advice on this to perfect it. Then I can schedule it to run each night.
I am testing by shutting down some VMs, where it will list "No Contact"
It's not quite the same as when the VM becomes non-responsive, but it'll have to do for testing.
In my testing this script actually works to turn the shut down machines back on, but there are errors as well that I'll chronicle below.
My script looks like this...
=============================================
$VMs = Get-VM
foreach ($vm in $VMs)
{
Get-VMIntegrationService -VMName $VM -Name Heartbeat
if ($VM.PrimaryStatusDescription -ne "OK")
{
Stop-VM $VM -Force -TurnOff
Start-VM $VM
}
}
=============================================
The errors I'm getting...
Get-VMIntegrationService : The specified wildcard character pattern is not valid: VirtualMachine (Name = 'VDI-50')
[Id = '9164986e-9a1a-4be6-922d-4abeddb1c855']
At C:\updates\test.ps1:4 char:5
+ Get-VMIntegrationService -VMName $VM -Name Heartbeat
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Get-VMIntegrationService], VirtualizationException
+ FullyQualifiedErrorId : Unspecified,Microsoft.HyperV.PowerShell.Commands.GetVMIntegrationService
Let me know what you think- thank you!
Jack
↧
Script to Detect No Heartbeat, Turn Off and Turn On Hyper-V VMs
Occasionally it happens that our Hyper-V VMs are non-responsive, Heartbeat is listed as "No contact"
Typically after MS updates and restarts.
At that point there's nothing to do but forcibly Turn Off the VM and Turn On.
I'm working on automating this process. I put together a Powershell script that seems to work but throws some errors. I could use some advice on this to perfect it. Then I can schedule it to run each night.
I am testing by shutting down some VMs, where it will list "No Contact"
It's not quite the same as when the VM becomes non-responsive, but it'll have to do for testing.
In my testing this script is actually working to turn the shut down machines back on, but there are errors as well that I'll chronicle below.
My script looks like this...
=============================================
$VMs = Get-VM
foreach ($vm in $VMs)
{
Get-VMIntegrationService -VMName $VM -Name Heartbeat
if ($VM.PrimaryStatusDescription -ne "OK")
{
Stop-VM $VM -Force -TurnOff
Start-VM $VM
}
}
=============================================
The errors I'm getting...
Get-VMIntegrationService : The specified wildcard character pattern is not valid: VirtualMachine (Name = 'VDI-50')
[Id = '9164986e-9a1a-4be6-922d-4abeddb1c855']
At C:\updates\test.ps1:4 char:5
+ Get-VMIntegrationService -VMName $VM -Name Heartbeat
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Get-VMIntegrationService], VirtualizationException
+ FullyQualifiedErrorId : Unspecified,Microsoft.HyperV.PowerShell.Commands.GetVMIntegrationService
The Hyper-V servers are Windows 2016
The VMs are Windows 10 (1809)
Let me know what you think- thank you!
Jack
↧