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Re: Poor CPU performance after ESXi 6.5 patch

July 5, 2018, 6:16 pm
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I am not an employee of VMware.

 

To be clear I suspect it is the Spectre variant 4 (Speculative Store Bypass) that has caused the slowdown.

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV180012

 

There are four major Spectre variants. Spectre variant 3, aka Meltdown or rogue data cache load, does not require an Intel CPU microcode update. There is also Spectre variant 3a.

 

Microcode updates usually come in the form of the a BIOS/EFI firmware update of the physical machine. VMware has provided microcode updates for certain CPUs (Sandy Bridge and newer) through ESXi VIBs. Microsoft also provided microcode updates for Haswell and newer CPUs. If I am not mistaken, the microcode update can be updated through Linux OS updates. The microcode delivery through Microsoft Windows and Linux OS updates allows machines that no longer have BIOS/EFI updates from the system vendor to be updated. Apple also provided microcode updates through macOS updates.

 

One way to check the Spectre microcodes updates is to look at the vmware.log of any VM the value of EDX register CPUID leaf 7. I don't have a machine that has the microcode update for Spectre variant 4 yet. This is from the vmware.log of a VM running Fusion 8.5.10 on a MacBook Pro.

 

vmx| I125: hostCPUID level 00000007, 0: 0x00000000 0x000027ab 0x00000000 0x0c000000

 

It has the microcode updates for Spectre variants 1 and 2 but it does not have the variant 4 microcode update that is why bit 31 is 0 for the EDX register while bit 26 and 27 are 1.

 

If you are not familiar with the VMware ESXi patches with regards to Spectre variants 1 and 2, I'd suggest you look at this KB.

 

https://kb.vmware.com/kb/52085

 

Sorry I am not clicking on that link you provided and I won't try those tools. Microsoft has provided similar tools in the form of Powershell scripts to check Spectre and Meltdown status. And they also provided information on how to disable them at the Windows OS level.

 

https://support.microsoft.com/en-us/help/4073119/protect-against-speculative-execution-side-channel-vulnerabilities-in

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How to add the number of vSphere HA heartbeat datastores for the ESXi host

July 5, 2018, 6:19 pm
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I have a cluster and enabled vSphere HA.

After enabled vSphere HA, have a warning:

The number of vSphere HA heartbeat datastores for this host is 0, which is less then required:2

1.PNG

 

I have a iSCSI Storage（Windows Server 2012）

And add storage to ESXi hosts

2.PNG

 

What should I do?

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Re: How to add the number of vSphere HA heartbeat datastores for the ESXi host

July 5, 2018, 6:26 pm
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Re: How to add the number of vSphere HA heartbeat datastores for the ESXi host

July 5, 2018, 6:29 pm
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Re: VMWare Player crashing on Windows Guest Shutdown

January 4, 2018, 9:58 am
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In addition to the two workarounds I provided above, I've also digged a little bit further and found that the issue doesn't happen only when the machine is shutdown, but when vmware tools exit, which also happens during shut down (actually right, after the user request the shutdown).

 

Continuing the investigation, I've isolated the VMCI driver in VMWare tools as the culprit of triggering the issue (by uninstalling this specific driver).  Later, I've found a better and less radical approach that is to disable the vmci virtual hardware instead of uninstalling its driver from VMWare tools.

 

The VMCI virtual hardware enables two features: 1) allows two Virtual machines to communicate to each other circumventing the network layer; 2) allows the use of shared folders (mount host files in guest os).  I actually use none of them (I use actual samba exports in a physical server to share files instead).  If this is also your case not to need any of these features, this third workaround is for you.  The procedure is very simple: With the virtual machine stopped, first make a backup copy of your .vmx file, then edit it and change the line containing:

vmci0.present = "TRUE"

                    to

vmci0.present = "FALSE"

OBS: It is important to back the .vmx file up because after the first boot with the vmci disabled, other options will also be changed automatically (like the pci slot of the vmci hardware being changed to -1, so the backup will allow you to re-enable it in the future in case you want.

 

In summary there are currently 3 workarounds available:

 

1)  Use a file system other than ext4 for holding the virtual machine files (like btrfs, xfs or jfs)

     trade off: requires a separate partition just for the VM files (or a reformatting of the current one);

 

2) bindfs (fuse) mount the directory containing the virtual machine files on top of itself before turning on the virtual machine

    trade off: a small hit in performance;

 

3) disable the vmci virtual hardware in the .vmx file

    trade off: cannot use shared folders

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Opening an existing Virtual Machine in vmplayer GUI doesn't work if "remember recently used files" is set to disabled under Privacy Settings

July 5, 2018, 5:52 pm
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In reference to another thread (https://communities.vmware.com/thread/573225), I've created this one with a clearer title as well as a better description of the issue use case so that it gets the proper attention from VMWare (note that many people have struggled in this other thread for a while until the cause of this issue got better understood (and there was a high chance that this never get read there).

 

Use case and issue:

vmplayer 14 (and probabbly vmware-workstation) is not able to open a Virtual Machine in the GUI if the user sets the system to not remember recently used files under privacy settings.

 

* In Fedora, this is achieved by turning "Usage & History" under "Settings / Privacy / Usage & History" off.

* In Ubuntu, this is the "Record file & application usage" setting under "All Settings / Security & Privacy / Files & Applications".

 

It is important to notice that this is the same system-wide parameter that allows users to disable things like a text editor to remember which was the last document he/she edited.  It is a perfectly valid use case that the user doesn't want applications to remember their recently open files in text editors, web browsers, graphical editors, etc. and yet wants vmplayer to keep a library of virtual machines, but this is even worse: Simply Opening a Virtual Machine in the GUI doesn't work if this parameter is set to keep the users privacy (being the only alternative to issue the vmplayer command line directly opening the VM, but this turns it immediately on, not allowing many settings modifications).

 

After some research I understand that VMWare developers use the GtkRecentManager family of functions (that work with the ~/.local/share/recently-used.xbel file) to store and manage the Virtual Machines library.  In my understanding this is a design mistake because it relies in the user letting this privacy setting as active (with less privacy) in order to be able to open a Virtual Machine for editing in the GUI, which implies is a system-wide side effect in the privacy settings for all applications.

 

In any case, even if VMWare understands this is the proper location to store the library, which is very controversial, the VMWare GUI should at least be able to open a Virtual Machine for editing in this scenario, even if it is the case that vmplayer will not remember the last opened VMs in the next session (a "meno male" fix).

 

This is clearly a BUG considering a valid use case that doesn't work: opening a VM.

 

OBS: As a system-wide parameter I mean system-wide for an specific user.

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Re: How to add the number of vSphere HA heartbeat datastores for the ESXi host

July 5, 2018, 7:09 pm
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I have seen this KB.

I want to solve the warning instead of ignoring it.

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Re: How to add the number of vSphere HA heartbeat datastores for the ESXi host

July 5, 2018, 7:14 pm
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You need to add a second datastore.

Then right click each of the ‘hosts’ and select ‘Reconfigure for HA’.

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Re: How to add the number of vSphere HA heartbeat datastores for the ESXi host

July 5, 2018, 7:18 pm
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Thanks, I has been solve the warning.

add second datastore in Heartbeat Datastores

 

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Re: Post Install script

July 5, 2018, 7:30 pm
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This is what host profiles are for.

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Re: Distored resizing window resolution in OS X Guest

July 5, 2018, 7:36 pm
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In Fusion 10.x, it supports HiDPI in macOS guest. After VMtools installed, the "Use Full resolution for Retina display" will be enabled in Settings -> Display.

It makes the UI in the macOS guest  as clear as that in the host.

When resizing window, it will change the resolution of the guest with full pixels first. That is why you see the smaller UI elements flash across. After that, it applies the HiDPI support in guest, the UI goes to the normal size.

You can uncheck the "Use full resolution for Retina display" to confirm it.

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NSX DFW Exclusion List

July 5, 2018, 7:39 pm
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I am using NSX 6.3.2 & I was trying to export the list of VMs under the NSX Exclusion list.

There is option to export the VMs under the exclusion list. Whenever i try this option, the outout csv file is blank with the word "Virtual Machine"

 

Has any one faced this & is there any work around to this.

There is REST API command in which I can get the output, but i want it in excel file.

 

 

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I have two ESXI servers, I use FC shared storage, and the linked clone desktop pool should have only one replica disk, but now there are two replica disk.

July 5, 2018, 7:50 pm
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I have two ESXI servers, I use FC shared storage, and the linked clone desktop pool should have only one replica disk, but now there are two replica disk.

My vmware view version is 7.2

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6.5 U2 upgrade to 6.7 - will there ever be a supported upgrade path

July 5, 2018, 8:07 pm
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6.5 U2 upgrade to 6.7 - will there ever be a supported upgrade path?

 

I think the answer will be yes, in due time. But I just wanted to hear what you guys had to say about this.

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Dell R210 II Raid controller

July 5, 2018, 8:10 pm
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Hello Vmware guys, i recently bought a 1u Dell r210 II Server 1270v2 cpu, it has a Perc S300 raid controller which is Not compatible with esxi, so im looking for advice of what aternatives i have for replacing this raid controller with working one? i have look at LSI 9260-4i MegaRAID 6Gb/s  but not sure if it will work, please any help/suggestion will be appreciated it. thank you very much

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Re: VM Guest unresponsive

July 5, 2018, 8:14 pm
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I have upgraded to 6.5U2. I'm hoping that resolves the issue.

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Re: VCP7-CMA certification 2v0-731

July 5, 2018, 8:37 pm
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Hi ,

 

I have tried the exam two times in last two weeks .

Had already gone through training , documentation and also VMware practice exams (mylearn) .

Still failed the exam with one quetion wrong both the times .

I had gone through exam collection dumps as well .

I have already lost two on exam fees (250 $ ) . Can someone help how can I clear the exam in the next attempt .

It seems answers mentioned in the dumps are wrong ...can we get correct answers for questions .

 

Your help is really appreciated

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test

July 5, 2018, 8:54 pm
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Re: error while I run .ps script

July 5, 2018, 9:02 pm
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I tried 2 test.

 

1st test.

I opened PowerShell console, I run script .ps1 which you described.

Here is output:

 

Get-Item : Cannot find path 'HKCR:\.ps1\OpenWithProgids' because it does not exist.

At C:\Users\administrator.AUSL6\Desktop\test cruscotto auto di battaglia\prova.ps1:3 char:1

+ Get-Item "HKCR:\$($assoc.split('=')[0])\OpenWithProgids"

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ObjectNotFound: (HKCR:\.ps1\OpenWithProgids:String) [Get-Item], ItemNotFoundException

    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.GetItemCommand

    Hive: HKEY_CLASSES_ROOT\Microsoft.PowerShellScript.1\Shell\Open

 

Name                           Property

----                           --------

Command                        (default) : "C:\Windows\System32\notepad.exe" "%1"

 

 

 

2nd test.

I Open by, Windows Explorer, new windows and I click on script ps1 which you described.

I got :

 

. : The term 'C:\Program Files (x86)\VMware\Infrastructure\vSpherePowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

At line:1 char:3

+ . "C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\Scri ...

+   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ObjectNotFound: (C:\Program File...Environment.ps1:String) [], CommandNotFoundException

    + FullyQualifiedErrorId : CommandNotFoundException

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guest introspection use case?

July 5, 2018, 9:15 pm
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i've read some documents of guest introspection but still don't understand it completely.

my doubts are:

 

1. the guest introspection is made for anti-virus/malware purpose only?

2. the thin agent driver replaces the traditional AV program in VMs so there's no need to configure antivirus in the VM?

3. is it meaningless to install and use guest introspection without third party's(vmware partners) secure virtual appliances?

4. the thin agent and secure virtual appliance do all the antivirus tasks instead of what typical antivirus programs do?

5. how does it protect offline VMs?

6. is there redundancy between SVMs (since the SVM will be installed on each host in the cluster)?

7. is there any features/functions similar to guest introspection in pure vSphere platform?

 

sorry for the stupid questions, any reply will be appreciated!

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