Fixed Path via PowerCLI on new Datastores in Stretched Clusters

[svillar]

Hi,

I've been using the following script to set datastores to FIXED path.  Because we are using a stretch cluster, each datastore can connect to 2 of 4 paths.  We additionally load balance over both fabrics.  So even named hosts will use the path to fabric A and odd named hosts will use the path to fabric B.

get-scsilun -vmhost esx01* | Get-Scsilunpath -ScsiLun { $_ } | where { $_.SanID -eq "20:00:00:00:00:00:00:01" -or $_.SanID -eq "20:00:00:00:00:00:10:02" } | Set-Scsilunpath -scsilunpath { $_ } -preferred

get-scsilun -vmhost esx02* | Get-Scsilunpath -ScsiLun { $_ } | where { $_.SanID -eq "20:00:00:00:00:00:00:03" -or $_.SanID -eq "20:00:00:00:00:00:10:04" } | Set-Scsilunpath -scsilunpath { $_ } -preferred

The script works fine, however, it targets all datastores on each host which have been previously set, not just new ones.  How can I adjust it to target only new datastores by name?

Thanks!

[LucD · Accepted solution]

You could expand the Where-clause and only take the paths that not set as preferred.

Get-ScsiLun -VmHost esx01* |

Get-Scsilunpath |

where { ($_.SanID -eq "20:00:00:00:00:00:00:01" -or $_.SanID -eq "20:00:00:00:00:00:10:02") -and -not $_.Preferred} |

Set-Scsilunpath -Preferred