AzStackHci.EnvironmentChecker

1.2100.2405.201

AzStackHciStorage/AzStackHci.Storage.Helpers.psm1

                                class HealthModel

{

    # Attributes for Azure Monitor schema

    [string]$Name #Name of the individual test/rule/alert that was executed. Unique, not exposed to the customer.

    [string]$Title #User-facing name; one or more sentences indicating the direct issue.

    [string]$Severity #Severity of the result (Critical, Warning, Informational, Hidden) – this answers how important the result is. Critical is the only update-blocking severity.

    [string]$Description #Detailed overview of the issue and what impact the issue has on the stamp.

    [psobject]$Tags #Key-value pairs that allow grouping/filtering individual tests. For example, "Group": "ReadinessChecks", "UpdateType": "ClusterAware"

    [string]$Status #The status of the check running (i.e. Failed, Succeeded, In Progress) – this answers whether the check ran, and passed or failed.

    [string]$Remediation #Set of steps that can be taken to resolve the issue found.

    [string]$TargetResourceID #The unique identifier for the affected resource (such as a node or drive).

    [string]$TargetResourceName #The name of the affected resource.

    [string]$TargetResourceType #The type of resource being referred to (well-known set of nouns in infrastructure, aligning with Monitoring).

    [datetime]$Timestamp #The Time in which the HealthCheck was called.

    [psobject[]]$AdditionalData #Property bag of key value pairs for additional information.

    [string]$HealthCheckSource #The name of the services called for the HealthCheck (I.E. Test-AzureStack, Test-Cluster).

}

class AzStackHciStoragePoolTarget : HealthModel {}

class AzStackHciStorageVolumeTarget : HealthModel {}

Import-LocalizedData -BindingVariable lnTxt -FileName AzStackHci.Storage.Strings.psd1

# Test Methods

function Test-HciStoragePool

{

    [CmdletBinding()]

    param (

        [Parameter(Mandatory = $true, HelpMessage = "Pool configuration xml from Storage role.")]

        [XML]

        $PoolConfigXml,

        [Parameter(Mandatory = $true, HelpMessage = "Total number of cluster nodes.")]

        [uint32]

        $NodeCount

    )

    try

    {

        $instanceResult = New-Object AzStackHciStoragePoolTarget

        $instanceResult.Name = 'AzStackHci_Storage_Test_Storage_Pool'

        $instanceResult.Title = 'Test Storage Pool'

        $instanceResult.Severity = 'Critical'

        $instanceResult.Description = 'Checking storage pool for upgrade readiness'

        $instanceResult.TargetResourceID = 'StoragePool'

        $instanceResult.TargetResourceName = '(None)'

        $instanceResult.TargetResourceType = 'Storage Pool'

        $instanceResult.Timestamp = [datetime]::UtcNow

        $instanceResult.HealthCheckSource = $ENV:EnvChkrId

        $instanceResult.Status = 'Succeeded'

        # Get storage pool

        $pool = Get-StoragePool -IsPrimordial:$false -ErrorAction Ignore

        Log-Info -Message "Storage Pool: `n$($pool | ft | Out-String)"

        # Get S2D status

        $s2d = Get-ClusterS2D -ErrorAction Ignore

        Log-Info -Message "ClusterS2D: `n$($s2d | fl | Out-String)"

        $s2dEnabled = $s2d -and $s2d.State -eq 'Enabled'

        # Check pool existence vs S2D status, only below combinations are valid

        #   1. S2D is enabled and single storage pool found

        #   2. S2D is not enabled and no storage pool is found

        Log-Info -Message "Checking storage pool existence vs S2D status"

        if ($pool)

        {

            if (@($pool).Count -eq 1)

            {

                $instanceResult.TargetResourceName = $pool.FriendlyName

                if (-not $s2dEnabled)

                {

                    $instanceResult.Status = 'Failed'

                    $instanceResult.Remediation = ($lnTxt.RemNonS2DStoragePoolFound -f $pool.FriendlyName)

                    return $instanceResult

                }

            }

            else

            {

                $instanceResult.Status = 'Failed'

                $instanceResult.Remediation = $lnTxt.RemMultipleStoragePoolFound

                return $instanceResult

            }

        }

        else

        {

            if ($s2dEnable)

            {

                $instanceResult.Status = 'Failed'

                $instanceResult.Remediation = $lnTxt.RemS2DEnabledWithoutStoragePool

                return $instanceResult

            }

        }

        # Check pool health status

        if ($pool)

        {

            Log-Info -Message "Checking health state for storage pool '$($pool.FriendlyName)'"

            if ($pool.OperationalStatus -ne 'OK' -or $pool.HealthStatus -ne 'Healthy')

            {

                $instanceResult.Status = 'Failed'

                $instanceResult.Remediation = ($lnTxt.RemStoragePoolNotHealthy -f $pool.FriendlyName, $pool.OperationalStatus, $pool.HealthStatus)

                return $instanceResult

            }

            elseif ($pool.IsReadOnly)

            {

                $instanceResult.Status = 'Failed'

                $instanceResult.Remediation = ($lnTxt.RemStoragePoolIsReadOnly -f $pool.FriendlyName)

                return $instanceResult

            }

        }

        # Check pool capacity for infrastructure volumes creation

        if ($pool)

        {

            Log-Info -Message "Checking remaining capacity in storage pool '$($pool.FriendlyName)'"

            $remainingCapacity = $pool.Size - $pool.AllocatedSize

            $requiredInfraCapacity = GetRequiredInfraVolumeRawSizeTotalInBytes -PoolConfigXml $PoolConfigXml -NodeCount $NodeCount

            if ($remainingCapacity -lt $requiredInfraCapacity)

            {

                $instanceResult.Status = 'Failed'

                $instanceResult.Remediation = ($lnTxt.RemInsufficientPoolCapacityForInfraVolumes -f $pool.FriendlyName, $remainingCapacity, $requiredInfraCapacity)

                return $instanceResult

            }

        }

        return $instanceResult

    }

    catch

    {

        throw $_

    }

}

function Test-HciStorageVolumes

{

    [CmdletBinding()]

    param (

        [Parameter(Mandatory = $true, HelpMessage = "Pool configuration xml from Storage role.")]

        [XML]

        $PoolConfigXml,

        [Parameter(Mandatory = $true, HelpMessage = "Total number of cluster nodes.")]

        [uint32]

        $NodeCount

    )

    try

    {

        $instanceResults = @()

        # Get the preserved names of infra volumes

        $infraVolumeNames = @(GetRequiredInfraVolumeNames -PoolConfigXml $PoolConfigXml -NodeCount $NodeCount)

        # Get current volumes on the stamp

        $currentVDs = Get-VirtualDisk -ErrorAction Ignore

        Log-Info -Message "Virtual Disks: `n$($currentVDs | ft | Out-String)"

        $currentVolumeNames = @($currentVDs | % FriendlyName)

        # Check if current volume name conflicts with preserved infrastructure volumes

        Log-Info -Message "Checking storage volume name conflicts"

        foreach ($infraName in $infraVolumeNames)

        {

            $instanceResult = New-Object AzStackHciStorageVolumeTarget

            $instanceResult.Name = 'AzStackHci_Storage_Test_Storage_Volume'

            $instanceResult.Title = 'Test Storage Volume'

            $instanceResult.Severity = 'Critical'

            $instanceResult.Description = 'Checking storage volumes for upgrade readiness'

            $instanceResult.TargetResourceID = $infraName

            $instanceResult.TargetResourceName = $infraName

            $instanceResult.TargetResourceType = 'Storage Volume'

            $instanceResult.Timestamp = [datetime]::UtcNow

            $instanceResult.HealthCheckSource = $ENV:EnvChkrId

            $instanceResult.Status = 'Succeeded'

            if ($currentVolumeNames -contains $infraName)

            {

                $instanceResult.Status = 'Failed'

                $instanceResult.Remediation = ($lnTxt.RemInfraVolumeNameConflict -f $infraName)

            }

            $instanceResults += $instanceResult

        }

        return $instanceResults

    }

    catch

    {

        throw $_

    }

}

# Intenral Methods

function GetRequiredInfraVolumeRawSizeTotalInBytes

{

    [CmdletBinding()]

    param (

        [Parameter(Mandatory = $true)]

        [XML]

        $PoolConfigXml,

        [Parameter(Mandatory = $true)]

        [uint32]

        $NodeCount

    )

    $poolConfig = $PoolConfigXml.StoragePool

    # Compute total size of (fixed-size) infrastructure volumes

    $totalInfraVolSize = 0

    foreach ($volConfig in $poolConfig.Volumes.Volume | ? { $_.Size -and $NodeCount -ge $_.MinNodeCount })

    {

        $volSize = Invoke-Expression $volConfig.Size

        $totalInfraVolSize += $volSize

    }

    # Compute raw size after mirroring

    $storageEfficiency = if ($NodeCount -le 2) { 1/2 } else { 1/3 }

    $totalInfraVolSize = [uint64]($totalInfraVolSize / $storageEfficiency)

    Log-Info -Message "Total infrastructure volumes raw size required: $totalInfraVolSize, with storage efficiency: $storageEfficiency"

    return $totalInfraVolSize

}

function GetRequiredInfraVolumeNames

{

    [CmdletBinding()]

    param (

        [Parameter(Mandatory = $true)]

        [XML]

        $PoolConfigXml,

        [Parameter(Mandatory = $true)]

        [uint32]

        $NodeCount

    )

    $poolConfig = $PoolConfigXml.StoragePool

    $infraVolumeNames = $poolConfig.Volumes.Volume | ? { $_.Size -and $NodeCount -ge $_.MinNodeCount } | % Name

    Log-Info -Message "Required infrastructure volumes: [$infraVolumeNames]"

    return $infraVolumeNames

}

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