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function New-AzVmOsSnapshot {
<#
.SYNOPSIS
Create a snapshot of the OS disk of an Azure VM.
.DESCRIPTION
If we can unambiguously determine a single VM name inside the subscription
we are logged into through the input string, we will create a snapshot
of its OS disk.
.INPUTS
System.Object. @{ VmName = VMNAME; SnapshotName = SNAPSHOTNAME }
.OUTPUTS
String. Status messages and the actual AzureCLI outputs.
#>
[Alias(
'Create-AzVmOsSnapshot',
'azvmsnapshot',
'azvmsnap'
)]
Param(
[Parameter(
Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
HelpMessage="String that is a VM name or is part of one unambiguous VM",
Position=0
)
]
[ValidateLength(1,64)]
[string]
$VmName,
[Parameter(
Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
HelpMessage="Name of the snapshot",
Position=1
)
]
[ValidateLength(1,64)]
[string]
$SnapshotName
)
$ErrorActionPreference = 'Stop'
$myvm = Find-AzVm -VmName $VmName
$myDisk = (az vm show -g $myvm.resourceGroup -n $myvm.name --query "storageProfile.osDisk.managedDisk.id" -o json | ConvertFrom-Json)
Write-Host "Identified VM: ${myvm.name}"
Write-Host "Creating OS disk snapshot `"${SnapshotName}`""
az snapshot create -o jsonc -g $myvm.resourceGroup --source $myDisk --name $SnapshotName `
--query '[].{creationData: creationData, diskSizeGB: diskSizeGB, encryptionType: encryption.type, hyperVGeneration: hyperVGeneration, id: id, name: name, resourceGroup: resourceGroup, publicNetworkAccess: publicNetworkAccess}'
}
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