Public/Disconnect-SilkCNode.ps1
|
function Disconnect-SilkCNode { param( [Parameter(Mandatory)] [ipaddress] $cnodeIP, [Parameter()] [switch] $noUpdate, [Parameter()] [switch] $force ) # Try clearing the portal LAST... $portal = Get-IscsiTargetPortal | Where-Object {$_.TargetPortalAddress -eq $cnodeIP.IPAddressToString} # Removes persistence for those now-undiscovered sessions $allConnections = Get-IscsiConnection | where-object {$_.TargetAddress -eq $cnodeIP.IPAddressToString} # Chnage this to a while loop, and put a counter threshold on to run through it perhaps 3 times in case the connections remain after the MPIO claim if ($allConnections) { $killSessions = $allConnections | Get-IscsiSession # ensure unique sessions for the desired portal if ($killSessions) { $v = "Discovered " + $killSessions.count + " iscsi sessions to remove." $v | Write-Verbose foreach ($k in $killSessions) { $v = "Removing session " + $k.SessionIdentifier + " from the session list." $v | Write-Verbose # catch errors removing silk target if ($force) { $v = "Removing session " + $k.SessionIdentifier + " from WMI." $v | Write-Verbose $k | Remove-SilkFavoriteTarget -ErrorAction SilentlyContinue | Out-Null } Unregister-IscsiSession -SessionIdentifier $k.SessionIdentifier -ErrorAction SilentlyContinue Disconnect-IscsiTarget -SessionIdentifier $k.SessionIdentifier -Confirm:0 -ErrorAction SilentlyContinue } } if (!$noUpdate) { $v = "Updating MPIO claim." $v | Write-Verbose Update-MPIOClaimedHW -Confirm:0 | Out-Null # Rescan } } if ($portal) { $v = "Portal on IP " + $cnodeIP.IPAddressToString + " discovered, removing portal from the configuration." $v | Write-Verbose Remove-IscsiTargetPortal -TargetPortalAddress $cnodeIP.IPAddressToString -InitiatorInstanceName $portal.InitiatorInstanceName -InitiatorPortalAddress $portal.InitiatorPortalAddress -Confirm:0 | Out-Null Get-IscsiTarget | Update-IscsiTarget -ErrorAction SilentlyContinue | Out-Null Get-IscsiTargetPortal | Update-IscsiTargetPortal -ErrorAction SilentlyContinue | Out-Null if (!$noUpdate) { $v = "Updating MPIO claim." $v | Write-Verbose Update-MPIOClaimedHW -Confirm:0 | Out-Null # Rescan } } $allConnections = Get-IscsiConnection | where-object {$_.TargetAddress -eq $cnodeIP.IPAddressToString} # Chnage this to a while loop, and put a counter threshold on to run through it perhaps 3 times in case the connections remain after the MPIO claim if ($allConnections) { $killSessions = $allConnections | Get-IscsiSession | Where-Object {$_.IsDiscovered -eq 0} # ensure unique sessions for the desired portal if ($killSessions) { $v = "Discovered " + $killSessions.count + " iscsi sessions to remove." $v | Write-Verbose foreach ($k in $killSessions) { $v = "Removing session " + $k.SessionIdentifier + " from the session list." $v | Write-Verbose # catch errors removing silk target if ($force) { $v = "Removing session " + $k.SessionIdentifier + " from WMI." $v | Write-Verbose $k | Remove-SilkFavoriteTarget -ErrorAction SilentlyContinue | Out-Null } Unregister-IscsiSession -SessionIdentifier $k.SessionIdentifier -ErrorAction SilentlyContinue Disconnect-IscsiTarget -SessionIdentifier $k.SessionIdentifier -Confirm:0 -ErrorAction SilentlyContinue } } if (!$noUpdate) { $v = "Updating MPIO claim." $v | Write-Verbose Update-MPIOClaimedHW -Confirm:0 | Out-Null # Rescan } } # Now, add the desired number of sessions back in... $return = Get-SilkSessions return $return } |