Why storage replica failover failed either use New-PSSession or Enter-PSSession

Question

The following script will finish successfully, but after failover, the new DestinationComputer data volume still in mount state and the Replication status is "WaitingForDestination"

$cred = Get-Credential domain\adminaccount
$s = New-PSSession -computerName DestinationSrv01 -credential $cred
Invoke-Command -Session $s -Scriptblock {Set-SRPartnership -NewSourceComputerName DestinationSrv01 -SourceRGName rg02 -DestinationComputerName SourceSrv01 -DestinationRGName rg01 -confirm:$false}
Remove-PSSession $s

SourceSrv01:

DataVolume IsMounted ReplicationMode   ReplicationStatus
---------- --------- ---------------   -----------------
D:\                     Synchronous WaitingForDestination

I tested the same command using Enter-PSSession , the result is the same as above.

If I RDP to DestinationSrv01 and open PowerShell console run the following command, every is working.

Set-SRPartnership -NewSourceComputerName DestinationSrv01 -SourceRGName rg02 -DestinationComputerName SourceSrv01 -DestinationRGName rg01 -confirm:$false

SourceSrv01:

DataVolume IsMounted ReplicationMode     ReplicationStatus
---------- --------- ---------------     -----------------
D:\           False   Synchronous ContinuouslyReplicating

Answer 1

I'm navigating blind here but with current comments and the suspicion of a timing issue try adjusting the position of Start-Sleep :

$cred = Get-Credential domain\adminaccount
$s = New-PSSession -computerName DestinationSrv01 -credential $cred

$ScriptBlock = {
    $SRPartnerShip = Set-SRPartnership -NewSourceComputerName DestinationSrv01 -SourceRGName rg02 -DestinationComputerName SourceSrv01 -DestinationRGName rg01 -confirm:$false
    Start-Sleep -Seconds 30
    $SRPartnerShip = $SRPartnerShip | Get-SRPartnership
}

Invoke-Command -Session $s -Scriptblock $ScriptBlock
Remove-PSSession $s

This waits 30 seconds before refreshing then returning. The way you had it you were waiting 30 seconds after the return. If the refresh via a simple re-get didn't fix it it wouldn't change anything except to wait longer to return bad info.