QuorumType XML schema definition for Db2 High Availability Instance Configuration Utility (db2haicu) input files
A QuorumType
element
specifies the quorum device for the cluster domain.
Superelements
QuorumType
subelements:
XML schema definition
<xs:complexType name='QuorumType'>
<xs:attribute name='quorumDeviceProtocol'
type='QuorumDeviceProtocolType'
use='required'/>
<xs:attribute name='quorumDeviceName'
type='xs:string'
use='required'/>
</xs:complexType>
Subelements
None.
Attributes
- quorumDeviceProtocol (required)
quorumDeviceProtocol
specifies the type of quorum to use.A quorum device helps a cluster manager make cluster management decisions when the cluster manager's normal decision process does not produce a clear choice.
The type of the
quorumDeviceProtocol
attribute isQuorumDeviceProtocolType
.Here is the XML schema definition for the
QuorumDeviceProtocolType
:<xs:simpleType name='QuorumDeviceProtocolType'> <xs:restriction base='xs:string'> <xs:enumeration value='disk'/> <xs:enumeration value='scsi'/> <xs:enumeration value='network'/> <xs:enumeration value='eckd'/> <xs:enumeration value='mns'/> </xs:restriction> </xs:simpleType>
Currently supported values for this attribute are specified in the following table:
Table 1. Valid values for the quorumDeviceProtocol
attributequorumDeviceProtocol
valueMeaning network A network quorum device is an IP address to which every cluster domain node can connect at all times. MNS Cluster must have an odd number of hosts. In the event of an outage, quorum is preserved as long as a majority of nodes in the cluster survives. disk A disk that is shared by one or more nodes in the peer domain. In case of an outage, any node that cannot acquire this lock is assumed to be out of quorum. - quorumDeviceName
- The value of the
quorumDeviceName
depends on the type of quorum device specified inquorumDeviceProtocol
.Valid values for this attribute are specified in the following table:
Table 2. Valid values for the quorumDeviceName
attributeValue of quorumDeviceProtocol
Valid value for quorumDeviceName
network A string containing a properly formatted IP address. For example: 12.126.4.5
For the IP address that you specify to be valid as a network quorum device, every cluster domain node must be able to access this IP addressed (using the
ping
utility, for example.) - quorumDiskValue
-
The value of the
quorumDiskValue
depends on the type of quorum device specified inquorumDeviceProtocol
.Valid values for this attribute are specified in the following table:
Table 3. Valid values for the quorumDiskValue attribute Value of quorumDeviceProtocol
Valid value for quorumDeviceName
disk A valid identifier for the shared disk. It can be in the following format:
AIX- device path
- PVID=<pvid>
Linux- device path
- WWID=<wwid>
- WWN=<wwn>