Public/Disconnect-SilkCNode.ps1
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function Disconnect-SilkCNode { param( [Parameter(Mandatory)] [ipaddress] $cnodeIP, [Parameter()] [switch] $force, [Parameter()] [switch] $rebalance, [Parameter()] [switch] $update ) # information gathering $total = Get-SilkSessions -totalOnly # Try clearing the portal LAST... # Removes persistence for those now-undiscovered sessions if ($force) { if ($rebalance) { $msg = "You cannot use -force with -rebalance. Please select one, and then the other." return $msg | Write-Error } Remove-SilkStaleSessions -cnodeIP $cnodeIP.IPAddressToString -force } else { $portal = Get-IscsiTargetPortal | Where-Object {$_.TargetPortalAddress -eq $cnodeIP.IPAddressToString} $allConnections = Get-IscsiConnection | where-object {$_.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) { $sid = $k.SessionIdentifier Write-Verbose "Removing session $sid from the session list." Write-Verbose "--> Unregister-IscsiSession -SessionIdentifier $sid" Unregister-IscsiSession -SessionIdentifier $sid -ErrorAction SilentlyContinue Write-Verbose "--> Disconnect-IscsiTarget -SessionIdentifier $sid -Confirm:0" Disconnect-IscsiTarget -SessionIdentifier $sid -Confirm:0 -ErrorAction SilentlyContinue } } if ($update) { $v = "Updating MPIO claim." $v | Write-Verbose Write-Verbose "--> Update-MPIOClaimedHW -Confirm:0" Update-MPIOClaimedHW -Confirm:0 | Out-Null # Rescan } } if ($portal) { $v = "Portal on IP " + $cnodeIP.IPAddressToString + " discovered, removing portal from the configuration." $v | Write-Verbose $cmd = "--> Remove-IscsiTargetPortal -TargetPortalAddress " + $cnodeIP.IPAddressToString + " -InitiatorInstanceName " + $portal.InitiatorInstanceName + " -InitiatorPortalAddress " + $portal.InitiatorPortalAddress + " -Confirm:0" $cmd | Write-Verbose Remove-IscsiTargetPortal -TargetPortalAddress $cnodeIP.IPAddressToString -InitiatorInstanceName $portal.InitiatorInstanceName -InitiatorPortalAddress $portal.InitiatorPortalAddress -Confirm:0 | Out-Null if ($update) { $cmd = "--> Get-IscsiTarget | Update-IscsiTarget" $cmd | Write-Verbose Get-IscsiTarget | Update-IscsiTarget -ErrorAction SilentlyContinue | Out-Null $cmd = "--> Get-IscsiTargetPortal | Update-IscsiTargetPortal" $cmd | Write-Verbose Get-IscsiTargetPortal | Update-IscsiTargetPortal -ErrorAction SilentlyContinue | Out-Null $v = "Updating MPIO claim." $v | Write-Verbose Write-Verbose "--> Update-MPIOClaimedHW -Confirm:0" Update-MPIOClaimedHW -Confirm:0 | Out-Null # Rescan } } $return = Get-SilkSessions if ($rebalance) { $sessions = $total.'Configured Sessions' $cnodes = $total.CNodes $cnodes-- $sessionsPer = Get-SilkSessionsPer -nodes $cnodes -sessions $sessions $v = "Set-SilkSessionBalance -sessionsPer " + $sessionsPer $v | Write-Verbose Set-SilkSessionBalance -sessionsPer $sessionsPer $return = Get-SilkSessions } return $return | Format-Table } |