Upgrading the dynamic disk group version


Upgrading the dynamic disk group version
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The dynamic disk group version is not upgraded automatically after you upgrade SFW or SFW HA. If a service group in the previous configuration contains a dynamic disk group, you must upgrade its version after you complete the SFW or SFW HA upgrade.

Please note that the following features and operations are introduced with the new disk group version and, therefore, will not be supported if the disk group version is not upgraded:

The snapshot feature (prepare, snap shot, snap back, snap abort, and snap clear operations)
The dirty region logging (DRL) feature (add a log and remove a log operations)
Fast Resync and Fast File Resync features for volumes (add a log and remove a log operations)
Import disk group (import a legacy disk group as a shared disk group operation)
SSD caching

Note:

When a legacy disk group with dirty region logging (DRL) logs in its volumes is upgraded, the DRL logs are deleted on upgrade. You need to add the DRL logs manually after the upgrade.

Note:

Once a disk group version is upgraded, it cannot be changed back to an earlier disk group version and you can not import it on another server that is running any earlier versions of SFW.

Note:

After upgrading the disk group to the latest version and importing a disk group as a cluster-shared disk group (CSDG), you need to manually create the Volume Manager Shared Volume resource for each volume in a disk group.

You can upgrade the dynamic disk group using the Veritas Enterprise Administrator (VEA) console or the CLI.

To upgrade the dynamic disk group version from the command line:

To upgrade the disk group using CLI, run the following command. You must run this command for each dynamic disk group separately.
vxdg -gDynamicDiskGroupName [-T version] upgrade

Where,

DynamicDiskGroupName = Name of the dynamic disk group

version = Target version of the dynamic disk group
After the disk group version is upgraded successfully, the disk group version should be 171. Run the following command to verify the upgraded version:
vxdg -gDynamicDiskGroupName dginfo

To upgrade the dynamic disk group version using VEA

From the VEA console, right-click the disk group. You must perform these steps for each dynamic disk group separately.
Select Upgrade Dynamic Disk Group Version.
A notification indicating that the disk group version has been upgraded is seen in the alert logs. After the disk group version is upgraded successfully, the disk group version should be 171. You can verify the disk group properties to confirm the upgraded version. After the disk group version is upgraded successfully, the disk group version should be 171.

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