Hi bdave,
Thanks for the pointer to your Perl example, I'll take a look! The Powershell command I was building (resizing a primary and all secondary destinations) is now in production testing. I'm appending the code if you're interested.
# ResizeSourceAndDestVolume Command Version 3.3
param (
[parameter(Mandatory=$true, HelpMessage="Array name or IP address")]
[string] $Array,
[parameter(Mandatory=$true, HelpMessage="Name of primary volume to be modified")]
[string]$VolumeName,
[parameter(Mandatory=$true, HelpMessage="The max size of the volume while autosizing in MBytes")]
[int]$TargetSize,
[parameter(Mandatory=$true, HelpMessage="Maximum % full level of a volume after resize")]
[int]$MaxFillPercentage
)
# connect to controller
Connect-WFAController -Array $Array
# Check if volume exists
$volume = Get-NaVol -Names $VolumeName -ErrorAction Stop
if($volume.State -eq "restricted")
{
throw "Volume " + $VolumeName + " is in restricted state"
}
elseif($volume.State -eq "offline")
{
throw "Volume " + $VolumeName + " is in offline state"
}
# If the size is 0GB and we've gotten this far, remap it to 20mb (minimum size for a volume).
# Someone apparently wants a minimally sized volume.
if($TargetSize -eq 0)
{
$TargetSize = 20
}
# Enforce the policy that a volume may not be resized to be more than (usable space) MaxFillPercentage full.
$SnapReserve = Get-NaSnapshotReserve -Name $VolumeName
$FuturePercentFull=($volume.Used) * $TargetSize / (($volume.TotalSize + $SnapReserve.Size)/1024/1024)
if($FuturePercentFull -gt $MaxFillPercentage)
{
throw "Volume " + $VolumeName + " would be " + [string]$FuturePercentFull + "% full after resizing. Maximum permitted is " + [string]$MaxFillPercentage + "%"
}
Get-WFALogger -Info -message $("Resizing volume " + $VolumeName + " with value: "+ ([string]$TargetSize + "m"))
Set-NaVolSize -Name $VolumeName -NewSize ([string]$TargetSize + "m")
# Find out if the volume being changed is a source volume for a replication relationship.
# If it is, try to resize the destination volume(s) as well. The destination will be
# resized to be MaxFillPercentage full after resizing (e.g if MaxFillPercentage is 85, the volume
# will be set to be whatever size would result in an 85% full level). If this is too small, the
# autogrow policies on the nearstores will extend the volume dynamically.
Get-NaSnapvaultPriDestinations | Where-Object{$_.SourcePath -match "/vol/$VolumeName/"} | ForEach-Object {
$SecondaryVolume=$_.ChainedDestinations[0].DestinationPath.split("/")[2]
$SecondaryArray=$_.ChainedDestinations[0].DestinationSystem
Connect-WFAController -Array $SecondaryArray
$destVolume=Get-NaVol -Names $SecondaryVolume -ErrorAction Stop
# The minimum size for a destinatino volume is 10 GB per policy.
$NewSize=$destVolume.SizeUsed/($MaxFillPercentage/100)/1024/1024
if($NewSize -lt 10*1024*1024*1024)
{
$NewSize=10*1024*1024*1024
}
$StringNewSize=[string]$NewSize + "m"
$message="Resizing SnapVault destination volume " + $SecondaryVolume + " with value: " + $StringNewSize
Get-WFALogger -Info -message $($message)
Set-NaVolSize -Name $SecondaryVolume -NewSize $StringNewSize
}
Connect-WFAController -Array $Array
# Valid for QSM only (need to separate QSM and VSM to avoid searching for "vol1" and resizing destinations of "vol1a"
Get-NaSnapmirrorDestination | Where-Object{$_.SourceLocation -match "/vol/$VolumeName/"} | ForEach-Object {
$SecondaryVolume=$_.DestinationLocation.split("/")[2]
$SecondaryArray=$_.DestinationLocation.split(":")[0]
Connect-WFAController -Array $SecondaryArray
$destVolume=Get-NaVol -Names $SecondaryVolume -ErrorAction Stop
$NewSize=$destVolume.SizeUsed/($MaxFillPercentage/100)
# The minimum size for a destinatino volume is 10 GB per policy.
if($NewSize -lt 10*1024*1024*1024)
{
$NewSize=10*1024*1024*1024
}
$StringNewSize=[string]$NewSize + "m"
$message="Resizing Qtree SnapMirror destination volume " + $SecondaryVolume + " with value: " + $StringNewSize
Get-WFALogger -Info -message $($message)
Set-NaVolSize -Name $SecondaryVolume -NewSize $StringNewSize
}
Connect-WFAController -Array $Array
# Valid for VSM only
# Note: shrinking a destination will fail, as the file system in the destination will be resized only
# after a VSM update is completed.
# ***This resize is expected to fail in the unlikely event that a VSM destination is shrunk!***
Get-NaSnapmirrorDestination | Where-Object{$_.SourceLocation.split(":")[1] -eq $VolumeName} | ForEach-Object {
$SecondaryVolume=$_.DestinationLocation.split(":")[1]
$SecondaryArray=$_.DestinationLocation.split(":")[0]
Connect-WFAController -Array $SecondaryArray
$destVolume=Get-NaVol -Names $SecondaryVolume -ErrorAction Stop
$NewSize=$destVolume.SizeUsed/($MaxFillPercentage/100)
# The minimum size for a destinatino volume is 10 GB per policy.
if($NewSize -lt 10*1024*1024*1024)
{
$NewSize=10*1024*1024*1024
}
$StringNewSize=[string]$NewSize + "m"
$message="Resizing Volume SnapMirror destination volume " + $SecondaryVolume + " with value: " + $StringNewSize
Get-WFALogger -Info -message $($message)
Set-NaVolSize -Name $SecondaryVolume -NewSize $StringNewSize
}
