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sys_attrs_clubase(5)
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sys_attrs_clubase - clubase subsystem attributes
This reference page lists and describes attributes for the
cluster base (clubase) kernel subsystem. Refer to the
sys_attrs(5) reference page for an introduction to the
topic of kernel subsystem attributes.
Returns a string representing the susbystem name
(Cluster base component).
Supported operations: Query
String representing the installed version of TruCluster
Server; for example, TruCluster Server
X5.1A-2 (Rev. 267); 10/06/00 04:48
Supported operations: Query
Name of the cluster. The cluster installation procedure
prompts for this information sets this
attribute.
Supported operations: Query; Configure at boot time
TruCluster Server major version number. For example,
the major version of Version 5.1A is 5.
Supported operations: Query
TruCluster Server minor version number. For example,
the minor version of Version 5.1A is 1.
Supported operations: Query
Host name of this cluster member. The cluster
installation procedure sets this attribute.
Supported operations: Query; Configure at boot time
IP name associated with this member's cluster
interconnect interface. The cluster installation
procedure prompts for this information and sets
this attribute.
Supported operations: Query; Configure at boot time
Number of votes this member contributes towards
quorum. The connection manager uses this value to
determine cluster expected votes and cluster quorum
votes. The cluster installation procedure prompts
for this information sets this attribute. You can
use the clu_quorum command to adjust a member's
votes.
Supported operations: Query; Configure at boot
time; Reconfigure at run time
Minimum value: 0
Maximum value: 2147483647
Total number of votes expected in the cluster when
all members are up. The connection manager uses the
initial value of this attribute to derive an estimate
of the correct value for cluster quorum votes.
The cluster installation procedure and the clu_quorum
command set this attribute.
Supported operations: Query; Configure at boot
time; Reconfigure at run time
Minimum value: 0
Maximum value: 2147483647
Major device number of the h partition on the quorum
disk. The cluster installation procedure and
the clu_quorum command set this attribute.
Supported operations: Query; Configure at boot
time; Reconfigure at run time
Minimum value: 0
Maximum value: 4294967295
Minor device number of the h partition on the quorum
disk. The cluster installation procedure and
the clu_quorum command set this attribute.
Supported operations: Query; Configure at boot
time; Reconfigure at run time
Minimum value: 0
Maximum value: 4294967295
Number of votes the quorum disk contributes towards
quorum. The connection manager uses this value to
determine cluster expected votes and cluster quorum
votes. The cluster installation procedure and the
clu_quorum command set this attribute.
Supported operations: Query; Configure at boot
time; Reconfigure at run time
Minimum value: 0
Maximum value: 2147483647
Major device number of the h partition on this member's
boot disk. The cluster installation procedure
sets this attribute.
Supported operations: Query; Configure at boot time
Minimum value: 0
Maximum value: 4294967295
Minor device number of the h partition on this member's
boot disk. The cluster installation procedure
sets this attribute.
Supported operations: Query; Configure at boot time
Minimum value: 0
Maximum value: 4294967295
Number of times per second this member announces to
the cluster that it is alive.
Supported operations: Query; Configure at boot time
Default value: 4
Minimum value: 0
Maximum value: 18446744073709551615
Number of seconds the member waits, before proceeding
to form a cluster, to see if there is an existing
cluster for it to join.
Supported operations: Query; Configure at boot time
Default value: 10
Minimum value: 0
Maximum value: 18446744073709551615
Distributed lock manager (DLM) directory vector
weight value. Setting the directory weight value
increases the likelihood that this member will be
the director of a resource managed by the DLM.
This attribute is set to the value of the dlm_dirwt
attribute of the dlm kernel subsystem.
Supported operations: Query; Configure at boot time
Default value: 1
Minimum value: 0
Maximum value: 4
Kernel group services (KCH) directory vector weight
value. This attribute is set to the value of the
kch_dirwt attribute of the kch kernel subsystem.
Supported operations: Query; Configure at boot time
Default value: 1
Minimum value: 0
Maximum value: 4
Interconnect type to be used for cluster internode
communications. Currently allowed values are tcp
(LAN-based interconnect) and mct (Memory Channel).
Supported operations: Query; Configure at boot time
The time (in seconds) that the members of a cluster
with quorum allow between the occurrence of a communication
failure and the initiation of a rebuild
of cluster state (for example, the Distributed Lock
Manager database) following the removal of a cluster
member that has been presumed failed. This
delay ensures that the removed member has had sufficient
time to recognize the communication failure
and realize that it no longer has quorum and can no
longer perform I/O.
This attribute contributes to how aggressively
cluster members attempt to detect communication
failures by influencing the value of timers, such
as the keep-alive timers used in a LAN interconnect
configuration. A lower value results in faster
failure detection and cluster failover at the risk
of unnecessarily marking a cluster member as down.
A higher value results in slower failure detection
and cluster failover with a decreased likelihood of
unnecessarily marking a cluster member as down.
Setting the value too low creates the potential for
failure of a member to be able to join a cluster or
for a cluster member to be removed, because of a
perceived communication failure, during times of
heavy load.
Supported operations: Query; Configure at boot time
Default value: 240
Minimum value: 25
Maximum value: 18446744073709551615
sys_attrs(5), clu_quorum(8)
TruCluster Server Cluster Installation
sys_attrs_clubase(5)
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