Archives

Best Practice

Hello everyone:

I am new to Hyper-V, and I’m using it to configure some new VM’s.  I would like to ask a few networking questions.

I’m running 3 physical servers.

Server #1 has 3 VM’s and 8 physical NIC’s

Servers #2 and 3 have identical configurations: 4 VM’s and 4 physical NIC’s on each of these servers

What would be the ideal network setup for this configuration?  I’m a bit confused on teaming NIC’s in Windows explorer in the Adapters page vs. teaming NIC’s in the Hyper-V section of Server Manager.

Any input would be greatly appreciated!!

Read full post . . . .

Best Practice

Hello everyone:

I am new to Hyper-V, and I’m using it to configure some new VM’s.  I would like to ask a few networking questions.

I’m running 3 physical servers.

Server #1 has 3 VM’s and 8 physical NIC’s

Servers #2 and 3 have identical configurations: 4 VM’s and 4 physical NIC’s on each of these servers

What would be the ideal network setup for this configuration?  I’m a bit confused on teaming NIC’s in Windows explorer in the Adapters page vs. teaming NIC’s in the Hyper-V section of Server Manager.

Any input would be greatly appreciated!!

Read full post . . . .

VMs get rebooted every 4 hours (RHS Deadlock)

Hi,

2012R2 cluster with 17 hosts, 400 VMs. We have one host that decided this morning that some VMs were not responding and the failover cluster manager rebooted the VMs. Exactly 4 hours later the same happened.

We’ve had this happen before about a month ago. Different host, different VMs, same cluster. At once all VMs of a host started rebooting and the VMs were kept on the same host. This happened again exactly 4 hours later and again 4 hours later untill we completely
removed the host.

Is there any process that resets itself every 4 hours? Or does maintenance? Or if failed tries to restart every 4 hours?Timing is on the minute 4 hours.

In the cluster log I found this for the first occurrence:

00000908.0000a7d4::2018/12/11-08:09:51.192 INFO  [CAM] Token Created, Client Handle: 802f993c
00001428.0000cbf4::2018/12/11-08:09:51.536 INFO  [RES] Physical Disk : VolumeIsNtfs: Volume ?GLOBALROOTDeviceHarddisk99ClusterPartition2 has FS type NTFS
00006c5c.00006fa0::2018/12/11-08:09:51.599 ERR   [RHS] RhsCall::DeadlockMonitor: Call RESOURCECONTROL timed out by 15 milliseconds for resource 'SCVMM UMCUGW001 Configuration'.
00006c5c.00006fa0::2018/12/11-08:09:51.599 INFO  [RHS] Enabling RHS termination watchdog with timeout 1200000 and recovery action 3 from source 5.
00006c5c.00006fa0::2018/12/11-08:09:51.599 ERR   [RHS] Resource SCVMM UMCUGW001 Configuration handling deadlock. Cleaning current operation and terminating RHS process.
00006c5c.00006fa0::2018/12/11-08:09:51.599 ERR   [RHS] About to send WER report.
00000d94.000058c8::2018/12/11-08:09:51.599 WARN  [RCM] HandleMonitorReply: FAILURENOTIFICATION for 'SCVMM UMCUGW001 Configuration', gen(0) result 4/0.
00000d94.000058c8::2018/12/11-08:09:51.599 INFO  [RCM] rcm::RcmResource::HandleMonitorReply: Resource 'SCVMM UMCUGW001 Configuration' consecutive failure count 1.
00000d94.000058c8::2018/12/11-08:09:51.927 INFO  [RCM [RES] SCVMM DE-BATCH02 embedded failure notification, code=0 _isEmbeddedFailure=false _embeddedFailureAction=2
00000d94.0000d5f0::2018/12/11-08:09:51.927 INFO  [RCM [RES] SCVMM VHSACC01 (1) embedded failure notification, code=0 _isEmbeddedFailure=false _embeddedFailureAction=2
00006c5c.00006fa0::2018/12/11-08:09:52.036 ERR   [RHS] WER report is submitted. Result : WerReportQueued.
00000d94.000062cc::2018/12/11-08:09:52.052 ERR   rcm::RcmMonitor::HandleProcessSignal[RCM] rcm::RcmMonitor::RecoverProcess: Recovering monitor process 27740 / 0x6c5c

Read full post . . . .

VMs get rebooted every 4 hours (RHS Deadlock)

Hi,

2012R2 cluster with 17 hosts, 400 VMs. We have one host that decided this morning that some VMs were not responding and the failover cluster manager rebooted the VMs. Exactly 4 hours later the same happened.

We’ve had this happen before about a month ago. Different host, different VMs, same cluster. At once all VMs of a host started rebooting and the VMs were kept on the same host. This happened again exactly 4 hours later and again 4 hours later untill we completely
removed the host.

Is there any process that resets itself every 4 hours? Or does maintenance? Or if failed tries to restart every 4 hours?Timing is on the minute 4 hours.

In the cluster log I found this for the first occurrence:

00000908.0000a7d4::2018/12/11-08:09:51.192 INFO  [CAM] Token Created, Client Handle: 802f993c
00001428.0000cbf4::2018/12/11-08:09:51.536 INFO  [RES] Physical Disk : VolumeIsNtfs: Volume ?GLOBALROOTDeviceHarddisk99ClusterPartition2 has FS type NTFS
00006c5c.00006fa0::2018/12/11-08:09:51.599 ERR   [RHS] RhsCall::DeadlockMonitor: Call RESOURCECONTROL timed out by 15 milliseconds for resource 'SCVMM UMCUGW001 Configuration'.
00006c5c.00006fa0::2018/12/11-08:09:51.599 INFO  [RHS] Enabling RHS termination watchdog with timeout 1200000 and recovery action 3 from source 5.
00006c5c.00006fa0::2018/12/11-08:09:51.599 ERR   [RHS] Resource SCVMM UMCUGW001 Configuration handling deadlock. Cleaning current operation and terminating RHS process.
00006c5c.00006fa0::2018/12/11-08:09:51.599 ERR   [RHS] About to send WER report.
00000d94.000058c8::2018/12/11-08:09:51.599 WARN  [RCM] HandleMonitorReply: FAILURENOTIFICATION for 'SCVMM UMCUGW001 Configuration', gen(0) result 4/0.
00000d94.000058c8::2018/12/11-08:09:51.599 INFO  [RCM] rcm::RcmResource::HandleMonitorReply: Resource 'SCVMM UMCUGW001 Configuration' consecutive failure count 1.
00000d94.000058c8::2018/12/11-08:09:51.927 INFO  [RCM [RES] SCVMM DE-BATCH02 embedded failure notification, code=0 _isEmbeddedFailure=false _embeddedFailureAction=2
00000d94.0000d5f0::2018/12/11-08:09:51.927 INFO  [RCM [RES] SCVMM VHSACC01 (1) embedded failure notification, code=0 _isEmbeddedFailure=false _embeddedFailureAction=2
00006c5c.00006fa0::2018/12/11-08:09:52.036 ERR   [RHS] WER report is submitted. Result : WerReportQueued.
00000d94.000062cc::2018/12/11-08:09:52.052 ERR   rcm::RcmMonitor::HandleProcessSignal[RCM] rcm::RcmMonitor::RecoverProcess: Recovering monitor process 27740 / 0x6c5c

Read full post . . . .

VMs get rebooted every 4 hours

Hi,

2012R2 cluster with 17 hosts, 400 VMs. We have one host that decided this morning that some VMs were not responding and the failover cluster manager rebooted the VMs. Exactly 4 hours later the same happened.

We’ve had this happen before about a month ago. Different host, different VMs, same cluster. At once all VMs of a host started rebooting and the VMs were kept on the same host. This happened again exactly 4 hours later and again 4 hours later untill we completely
removed the host.

Is there any process that resets itself every 4 hours? Or does maintenance? Or if failed tries to restart every 4 hours?Timing is on the minute 4 hours.

Read full post . . . .

Hyper-V Live Migration between AMD EPYC and AMD Bulldozer Processors

Looking at replacing one node of our Windows 2012 Cluster with a new AMD EPYC processor based server.

The cluster currently has four AMD Opteron (Bulldozer) processor based servers. Trying to confirm that I will be able to perform Hyper-V live migrations between the new EPYC and the old AMD Opteron processors. 

I did find an AMD document on movement between AMD EPYC and Intel Processors -

https://www.amd.com/system/files/documents/vm-migration-guide.pdf
, but this has no mention of older AMD processors

 I posted this question on the AMD forum, but got no response.  Does anyone know whether the Live migration will work between these two AMD processor generations?

Cheers

Ceri

Read full post . . . .

2012 R2 Guest, Disk issues on one Host to another

Hello,

We’ve experienced a bit of an issue with our setup which I’m hitting a blank at. Any suggestions on what could be causing this would be great.

What’s our Setup?

We have a 3 node Hyper-V cluster, all running Windows Server 2012 R2.

They share a Dell EqualLogic PS4100X hosting the single CSV.

All hosts are matching Windows Updates and use Sophos Cloud as the AV (C:ClusterStorage, vmms.exe and vmwp.exe set as Exceptions)

We use a Remote Desktop Service solution with thin clients for our end users, they share 3 Remote Desktop Session hosts which are shared over all three Hyper-V Hosts and 1 Gateway Server hosting everything connection-wise and Remote Desktop User Profile
Disks.

What’s our Problem?

Roughly two weeks ago a disk failed in the SAN, causing a rebuild onto one of the host-spares.

At the point of the Failure - RDSGateway (RD Gateway server and User Profile Disk host) - was running on VMHost1. On this day all users of RDS was experiencing slowness issues (after the point of failure, it was running perfectly fine beforehand). We looking
into the Guest and noticed disk queue lengths through the roof for the User Profile Disk store - where obviously all AppData, etc lives for all users using RDS.

We put this down to "The array was in the process of rebuilding and causing the slowness issue whilst it rebuilt" however, the issue continued past the point of rebuild - so the disk array is now healthy, all other VM’s have no issues however RDSGateway,
running on VMHost1 will choke up.

How do we get this working?

We Live-Migrate the Guest "RDSGateway" from VMHost1 to VMHost2, and the issue with Disk lifts and immediately responds without issue. All users immediately return to normal operation and minimal latency and disk queue lengths return back below
1, hovering around 0.2 to 0.3 normally (when running on VMHost1, this sits around 15.0- 30.0).

What have I tried?

I’ve checked, "Get-ClusterSharedVolumeState" the CSV has direct communication with the SAN over all Hosts.

All hosts are using the provided Dell MPIO and all report multiple paths, I’ve confirmed Jumbo Frames are used across the board. Flow-Control is also in operation.

Windows Updates match across all hosts.

Correct Exceptions in place for RDSGateway (D:UserProfileDisks) to stop the scanning of UPD’s. (Sophos AV)

Reading; https://docs.microsoft.com/en-us/previous-versions//dn567657%28v%3dvs.85%29, I’ve turned off the IO Load Balancer on VMHost1 by setting the registry key "HKLMSystemCurrentControlSetServicesStorVspIOBalance_Enabled (REG_DWORD)"
to 0. I then rebooted the Host, Shutdown RDSGateway, quick moved to VMHost1 and booted once more.

I simply see no differences between the three hosts, and I’m simply stuck as to what to try next - getting this running without issue on VMHost1.

Hopefully someone has some ideas?

Kind Regards,

Oliver

Read full post . . . .

Hyper-V checkpoints: The selected virtual machine has no checkpoints

I have a VM on Hyper V that had around 10 checkpoints but post upgrading the VM’s configuration Version from 8.0 to 8.3, I cannot see any checkpoints for this VM. The checkpoint window says ‘The selected virtual machine has no checkpoints.’ When I browse
to the folder where all the checkpoints are stored (D:VM NameSnapshots) I can see all the checkpoints in that folder. But I can’t see them in the Checkpoints window of Hyper V.

I am running Windows 10 with Hyper V version 10.0.17134.1. The VM had Server 2012 R2 installed

Read full post . . . .

Server 2019 VM: Extremely Slow Internet Access

I installed Windows Server 2019 Standard Edition on a Dell server with 64gb and teamed NICs.  I imported VMs that I previously created with Windows Server 2016 (generation 2), and they work fine with no issues.  I created a new WS 2019 VM on
this machine which has one major issue: extremely slow internet access.  The problem is limited only to this VM.  I have checked all the settings, but I can’t figure out why internet downloads that take seconds on other VMs take hours on this one. 
Any help would be appreciated.

Read full post . . . .

Lenovo Yoga 910

I’ve used all the PowerShell and CDM to try to enable or activate Hyper-V, I’ve run it as an administrator and nothing happened I just get red codes

Enable-WindowsOptionalFeature : Feature name Microsoft-Hyper-V is unknown.
At line:1 char:1
+ Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V  …
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Enable-WindowsOptionalFeature], COMException
    + FullyQualifiedErrorId : Microsoft.Dism.Commands.EnableWindowsOptionalFeatureCommand 

ive copied the line of code straight from https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/quick-start/enable-hyper-v  and thats what i got if anybody can plase help me Id love it, thank you.

Read full post . . . .

Go Que Newsroom

Categories