VMNSDg resource status showing Unknown for Parallel or Replicated Data Cluster

book

Article ID: 100047166

calendar_today

Updated On:

Description

Error Message

Checking the VMNSDg_A log from %VCS_HOME%\Logs, would reveal below error

VCS WARNING V-16-10051-19538 VMNSDg:datadg:monitor:The DiskGroup is configured on disk (Signature:-XXXXXX, DiskBusType:9) that can be shared. Configure the SkipStorageValidation attribute to 1 for this resource or switch to use a clustered disk group (VMDg) for such configurations.

Cause

The resource type "VMNSDg" stands for "Volume Manager Non Shared Diskgroup" and is used in cases when there are plans to use non-shared storage in Cluster.

The SkipStorageValidation attribute needs to be enabled to support external disk or disks that are configured on the same SCSI controller as that of the OS disk 

For more information, please refer https://www.veritas.com/support/en_US/doc/129406946-129406949-0/br731_wxrt-tot_v75450513-129406949

Resolution

1. Highlight the VMNSDg without expanding the tree. On the right pane, top right, click on "Show all attributes"

2. Select SkipStorageValidation attribute and select Edit.

3. Enable checkbox on  SkipStorageVailidation as seen below

4. Once done, "Save and Close Configuration" from Java Console, to save the changes. 

CAUTION: "SkipStorageValidation" attribute should only be used, when it is known for sure that the disks are not shared across nodes. Possible data corruption may occur if the attribute is enabled for shared disks 

 

 

 

 

Issue/Introduction

When using VMNSDg resource in Replicated Data Cluster, the Service Group is marked as Parallel to allow the Service Group to be online on both cluster nodes at the same time. While attempting an Online for the VMNSDg resource for this Parallel group, the resource fails to probe and the status shows as Unknown.