Hello all,
I just came across this post, and figured I will throw my version into the mix. My version is actually a command and not a function. It's based on Cron jobs already being setup with a naming convention of "maint_##_r" for replication, and "maint_##_d" for deduplication. The "_d" will run an hour before the "_r"(see below). It will choose the appropriate "_r" job based on the least number of snapmirror relationships using those cron schedules. You can easily take the script and turn it into one that looks at the capacity of what is replicated as well, but I chose not to look at that as it isn't a true measurement of the change rate.
Once it chooses the replication cron job, it will also choose the associated deduplication job, and add those variables into the workflow parameters for later use down the line of the workflow.
It also checks to see if the efficiency schedule is already setup on the source side, and creates the effeciency policy if it doesn't exist.
----- Example Cron Jobs -----
Name Description
---------------- -----------------------------------------------------
maint_01_d @21:00
maint_01_r @22:00
maint_02_d @22:00
maint_02_r @23:00
maint_03_d @23:00
maint_03_r @0:00
maint_04_d @0:00
maint_04_r @1:00
maint_05_d @1:00
maint_05_r @2:00
maint_06_d @2:00
maint_06_r @3:00
maint_07_d @3:00
maint_07_r @4:00
maint_08_d @4:00
maint_08_r @5:00
-------------------------- Command -----------------------------
param (
[parameter(Mandatory=$true, HelpMessage="Name or IP address of a cluster where the schedule exists.")]
[string]$Cluster,
[parameter(Mandatory=$false, HelpMessage="Name of the SVM where the volume is being created.")]
[string]$vServer
)
Get-WFALogger -Info -message $("Connecting to the cluster: " +$Cluster)
#Connect to the Cluster
Connect-WfaCluster $Cluster
#Get Current Snapmirror Schedules
$mirrorschedules = Get-NcJobCronSchedule | Where-Object {$_.JobScheduleName -like 'maint_??_r'}
#Get Listing of Current SnapMirrors
$mirrors = Get-NcSnapmirror
#Sort Snapmirror Schedules and find the schedule with the fewest number of snapmirrors
$mirrorscheduleinfo = @()
foreach ($mirrorschedule in $mirrorschedules)
{
$scheduleinfo = @{
schedule = $mirrorschedule.JobScheduleName
mirrorCount = $($mirrors | Where-object {$_.Schedule -eq $mirrorschedule.JobScheduleName} | measure).Count}
$newObject = New-Object PSObject -Property $scheduleinfo
$mirrorscheduleinfo += $newObject
}
$selectedmirror = $($mirrorscheduleinfo | Sort-Object MirrorCount | Select-Object -Index 0).Schedule
Get-WFALogger -Info -message $("The selected mirror schedule is: " +$selectedmirror)
$dedupeschedule = $selectedmirror -replace "_r", "_d"
Get-WFALogger -Info -message $("The selected dedupe schedule is: " +$dedupeschedule)
##Check to see if Effeciency Policy Exists and if it doesn't create it.
if (!$(Get-NcSisPolicy -vserver $vServer -Name $dedupeschedule))
{
Get-WFALogger -Info -message $("No Effeciency Policy Exists. Creating one now." )
New-NcSisPolicy -name $dedupeschedule -Schedule $dedupeschedule -VserverContext $vServer
Get-WFALogger -Info -message $("Created Effeciency Policy: " +$dedupeschedule + " on: " +$vServer)
}
Add-WfaWorkflowParameter -Name SelectedMirror -Value $selectedmirror -AddAsReturnParameter $true
Add-WfaWorkflowParameter -Name DedupeSchedule -Value $dedupeschedule -AddAsReturnParameter $true
