Veritas Cluster Server Bundled Agents Reference Guide

26
Storage agents
DiskReservation (DiskRes) agent
Table 2-2
DiskRes agent optional attributes
Optional Attributes
ConfigPercentage
Description
The percentage of shared disks a system must reserve to be
designated owner of the DiskRes resource. When a system acquires
reservation to the number of disks that equals this value, the
resource is brought online on the system.
Set this attribute to at least 51 percent. If you set this attribute to
a value less than 50 percent, the agent changes it to 51 percent.
Default is 80 percent.
Note: If you set this attribute to a value less than 51 percent, the
agent internally treats it to be 51 percent. However, this is not
updated in the GUI.
Type and Dimension: integer-scalar
FailFastInterval
Number of seconds the resource waits before bringing down the
system after reservation fails. If during this interval the resource
acquires reservation, it is not brought down. The resource is
brought down in case of a reservation conflict, that is, if another
system acquires reservation to the shared disks. Note that if a
resource is brought down under these conditions, all service groups
on the system might fail over to another system in the cluster.
Default is 1 second.
Type and Dimension: integer-scalar
GracePeriod
Number of seconds the agent waits before taking over disk
reservation after issuing a bus reset.
Default is 5 seconds.
Type and Dimension: integer-scalar
Sample configuration
In the following example, the Disk Reservation agent is configured to monitor
three shared disks. The resource is brought online on a system when it acquires
reservation to all disks.
DiskRes DiskRes_A (
)
Signatures = {2336572, 2336573, 2336574}
ConfigPercentage = 100;