Veritas Storage Foundation 5.1 SP1 for Oracle RAC Release Notes (5900-1513, April 2011)

Support for importing shared disk groups

The CVMVolDg agent now imports the shared disk group from the CVM master

node, if the disk group is not already imported, when the corresponding CVMVolDg

resource is brought online.

Support for deporting shared disk groups

When the last online CVMVolDg resource for a shared disk group is taken offline,

the CVMVolDg agent now deports the disk group if the CVMDeportOnOffline

attribute is set to 1.

Review the following notes before setting the attribute value:

■ If multiple CVMVolDg resources are configured for a shared disk group, set

the value of the CVMDeportOnOffline attribute to 1 for all of the resources.

The CVM disk group is deported based on the order in which the CVMVolDg

resources are taken offline. If the CVMVolDg resources in the disk group

contain a mixed setting of 1 and 0 for the CVMDeportOnOffline attribute, the

disk group is deported only if the attribute value is 1 for the last CVMVolDg

resource taken offline. If the attribute value is 0 for the last CVMVolDg resource

taken offline, the disk group is not deported.

■ The shared disk group is not deported if it contains open volumes.

Support for I/O polling on volume sets

You can enable the CVMVolDg agent to perform periodic I/O polling on volume

sets by specifying their names in the CVMVolumeIoTest attribute of the resource.

This enables the CVMVolDg agent to proactively check the availability of the

volume sets by reading 4 KB blocks from its component volumes every monitor

cycle. Errors, if any, are reported to the log file /var/VRTSvcs/log/engine_A.log.

Note: The CVMVolDg agent takes a volume set offline if the file system metadata

volume in a volume set is discovered to be offline in a monitor cycle. However, if

the CFSMount resource goes offline and the file system on the volume set is

unmounted, the agent retains the online state of the volume set even if the

metadata volume in the volume set is offline. This is because the CVMVolDg agent

is unable to determine whether or not the volumes that are offline are metadata

volumes.

New attribute CVMDeportOnOffline

The CVMDeportOnOffline attribute setting enables the CVMVolDg agent to

determine whether or not a shared disk group must be deported when the

Storage Foundation for Oracle RAC Release Notes

Changes introduced in version 5.1 Service Pack 1