How can i limit concurrent tasks of a Hyper-V host?

[kjo@deif.com]

Like the title says, how can i limit concurrent tasks of a Hyper-V host with powershell?

I have not been able to find a command to do this.

Thanks in advance.

[DGrinev]

Hi Kim,

Have you read the article Set-VBRBackupRepository in the PowerShell Reference guide?
Another one for the Hyper-V proxy is here where you can set MaxTasks.

That's all I could find related to the topic.

Thanks!

[veremin]

If you post a screenshot or location of the UI setting you're talking about, we will be able to tell you the name of suitable PS cmdlet. Thanks!

[kjo@deif.com]

Hi veremin and DGrinev

Sorry for not replying sooner, work happened.

You can find the setting in: BACKUP INFRASTUCTURE -> Managed Servers -> Microsoft Hyper-V -> Right-click on a Hyper-V Server -> Properties -> Apply -> Max Tasks.

This is what I'm looking for (instead of New it says Edit in the top):


Add-VBRHvProxy has MaxTasks, but it is used when adding a Hyper-V Proxy. What I want is something like a Set-VBRHvProxy for modifying existing Hyper-V, but it doesn't appear to exist.

[chris.arceneaux]

Hi Kim,

The code below will allow you to update an Off-Host proxy configuration.

Code: Select all

$proxy = Get-VBRHvProxy -Name '10.0.2.110'
$options = $proxy.Options
$options.MaxTasksCount = 2
$proxy.SetOptions($options)

If you're looking to update an On-Host proxy configuration, the below code will work on both types of proxies. Note that an undocumented function is used. Please use at your own risk as this is subject to change in the future.

Code: Select all

$HvProxies = [Veeam.Backup.Core.CHvProxy]::GetAll()
$proxy = $HvProxies | Where-Object {$_.Name -eq '10.0.2.110'}
$options = $proxy.Options
$options.MaxTasksCount = 2
$proxy.SetOptions($options)

[oleg.feoktistov]

Hi Kim,

Adding to what Chris wrote - I also documented your comments as a feature request:
1. Set-VBRHvHost cmdlet.
2. -MaxTasks attribute for Add-VBRHvHost and Set-VBRHvHost (on-host backup proxy configuration).
3. Set-VBRHvProxy cmdlet (off-host backup proxy configuration).

Thanks!
Oleg

[kjo@deif.com]

Thanks!

[InfernalX64]

Hi veremin and DGrinev

Sorry for not replying sooner, work happened.

You can find the setting in: BACKUP INFRASTUCTURE -> Managed Servers -> Microsoft Hyper-V -> Right-click on a Hyper-V Server -> Properties -> Apply -> Max Tasks.

This is what I'm looking for (instead of New it says Edit in the top):


Add-VBRHvProxy has MaxTasks, but it is used when adding a Hyper-V Proxy. What I want is something like a Set-VBRHvProxy for modifying existing Hyper-V, but it doesn't appear to exist.

So glad I found this!

[JRRW]

Did this get disabled? I'm getting an error now when trying to use this script.

Code: Select all

PS C:\scripts\> $options.MaxTasksCount = 6
The property 'MaxTasksCount' cannot be found on this object. Verify that the property exists and can be set.
At line:1 char:1
+ $options.MaxTasksCount = 6
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentException

PS C:\scripts> $options.maxtaskscount
4
4
4
4
4

So it pulls the maxtaskscount fine but doing an = isn't assigning a new value to the object.

Worked fine prior to 11/11a - wondering if they changed how this value is assigned/handled in powershell.

When looking at the hv details it almost seems like they added the maxtaskscount not as an option, unless it's always been this way, but still doesn't let you adjust it:

Code: Select all

PS C:\scripts> $proxy.maxtaskscount
4
4
4
4
4
PS C:\scripts> $proxy.maxtaskscount=6
The property 'maxtaskscount' cannot be found on this object. Verify that the property exists and can be set.

Digging in further to try another route, it looks like perhaps they set this read only:

Code: Select all

PS C:\scripts> Foreach($proxy_specific in $proxy){$proxy_specific.maxtaskscount = 6}
'maxtaskscount' is a ReadOnly property.

'maxtaskscount' is a ReadOnly property

Why Veeam? Why...

[oleg.feoktistov]

Hi Ryan,

In your first two code snippets it looks like you are trying to set the value for MaxTasksCount property for an array of proxies at once. If it is the case, makes sense that it doesn't work.

As for the read-only restriction, yes, our developers might have set it so. But as Chris mentioned in his message, this function is undocumented and a subject to changes in the future, which means it is not supported. Besides, setting properties on objects directly via Powershell is not a best practice and should be avoided unless no other way is available. Cmdlet parameters should be used instead. That's why I noted a feature request for this.

Thanks,
Oleg