Upgrading the instant snap Data Change Objects (DCOs) and DCO volumes for a VxVM volume


Upgrading the instant snap Data Change Objects (DCOs) and DCO volumes for a VxVM volume
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Instant snap DCOs, formerly known as version 20 DCOs, support the creation of instant snapshots for VxVM volumes. Upgrade the instant snap DCOS and DCO volumes to ensure compatability with the latest version of VxVM. The upgrade operation can be performed while the volumes are online.

The upgrade operation does not support upgrade from version 0 DCOs.

To upgrade the instant snap DCOs for all volumes in the disk group

Make sure that the disk group is at least version 180. To upgrade the disk group:
```
# vxdg upgrade diskgroup
```
Use the following command to upgrade the instant snap DCOs for all volumes in the disk group:
```
# vxsnap -g diskgroup upgradeall
```
Where:diskgroup is the disk group that contains the volumes to be upgraded.

For additional options to the upgradeall operation, see the vxsnap(1M) manual page.

To upgrade the instant snap DCOs for specified volumes

Make sure that the disk group is at least version 180. To upgrade the disk group:
```
# vxdg upgrade diskgroup
```
To upgrade the DCOs, specify one or more volumes or volume sets to the following command:
```
# vxsnap [-g diskgroup] upgrade 
[volume1|volset1][volume2|volset2...]
```
Where:diskgroup is the disk group that contains the volumes to be upgraded.

For additional options to the upgrade operation, see the vxsnap(1M) manual page.

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