.TH mmgetstate 02/16/06
mmgetstate Command
.SH "Name"
.PP
The \fBmmgetstate\fR command displays the state of the GPFS daemon on one
or more nodes.
.SH "Synopsis"
.PP
\fBmmgetstate\fR [\fB-L\fR] [\fB-s\fR]
[\fB-v\fR] [\fB-a\fR | \fB-N\fR
{\fINode\fR[,\fINode\fR...] | \fINodeFile\fR |
\fINodeClass\fR}]
.SH "Description"
.PP
Use the \fBmmgetstate\fR command to show the state of the GPFS daemon on
one or more nodes.
.SH "Parameters"
.PP
.RS +3
\fB-a
\fR
.RE
.RS +9
List all nodes in the GPFS cluster. The option does not display
information for nodes that cannot be reached. You may obtain more
information if you specify the \fB-v\fR option.
.RE
.PP
.RS +3
\fB-N {\fINode\fR[,\fINode\fR...] |
\fINodeFile\fR | \fINodeClass\fR}
\fR
.RE
.RS +9
Directs the \fBmmgetstate\fR command to return GPFS daemon information
for a set of nodes. For information on how to specify node names, see \fISpecifying nodes as input to GPFS commands\fR
in \fIGPFS: Administration and Programming Reference\fR.
.PP
This command does not support a \fINodeClass\fR of
\fBmount\fR.
.RE
.SH "Options"
.PP
.RS +3
\fB-L
\fR
.RE
.RS +9
Display quorum, number of nodes up, total number of nodes, and other
extended node information.
.RE
.PP
.RS +3
\fB-s
\fR
.RE
.RS +9
Display summary information such as: number of local and remote
nodes that have joined in the cluster, number of quorum nodes.
.RE
.PP
.RS +3
\fB-v
\fR
.RE
.RS +9
Display intermediate error messages.
.RE
.PP
The GPFS states recognized and displayed by this command are:
.PP
.RS +3
\fBactive
\fR
.RE
.RS +9
GPFS is ready for operations.
.RE
.PP
.RS +3
\fBarbitrating
\fR
.RE
.RS +9
A node is trying to form a quorum with the other available nodes.
.RE
.PP
.RS +3
\fBdown
\fR
.RE
.RS +9
GPFS daemon is not running on the node.
.RE
.PP
.RS +3
\fBunknown
\fR
.RE
.RS +9
Unknown value. Node cannot be reached or some other error
occurred.
.RE
.SH "Exit status"
.PP
.PP
.RS +3
\fB0
\fR
.RE
.RS +9
Successful completion.
.RE
.PP
.RS +3
\fBnonzero
\fR
.RE
.RS +9
A failure has occurred.
.RE
.SH "Security"
.PP
You must have root authority to run the \fBmmgetstate\fR command.
.PP
When using the \fBrcp\fR and \fBrsh\fR commands for remote
communication, a properly configured \fB.rhosts\fR file must exist
in the root user's home directory on each node in the GPFS
cluster. If you have designated the use of a different remote
communication program on the
\fBmmcrcluster\fR or the
\fBmmchcluster\fR command, you must ensure:
.RS +3
.HP 3
1. Proper authorization is granted to all nodes in the GPFS cluster.
.HP 3
2. The nodes in the GPFS cluster can communicate without the use of a
password, and without any extraneous messages.
.RE
.SH "Examples"
.RS +3
.HP 3
1. To display the quorum, the number of nodes up, and the total number of
nodes for the GPFS cluster, issue:
.sp
.nf
mmgetstate -a -L
.fi
.sp
.sp
The system displays output similar to:
.sp
.nf
Node number  Node name  Quorum  Nodes up Total nodes  GPFS state
----------------------------------------------------------------
       1      k154gn01      3        5        8       active
       2      k154gn02      3        5        8       active
       3      k154gn09      3        5        8       active
       4      k154gn10      3        5        8       active
       5      k155gn01      3        5        8       active
       6      k154gn02      3        5        8       down
       7      k154gn09      3        5        8       down
       8      k154gn10      3        5        8       down
.fi
.sp
.sp
The 3 under the Quorum column means that you must have three quorum nodes
up to achieve quorum.
.HP 3
2. This is an example of a cluster using node quorum with tiebreaker
disks. Note the * in the Quorum field, which indicates that tiebreaker
disks are being used:
.sp
.nf
mmgetstate -a -L
.fi
.sp
The system displays output similar to:
.sp
.nf
Node    Node       Nodes Total GPFS
number  name Quorum  up  nodes state   Remarks
----------------------------------------------
 1      k5n91   5*   8    21   active
 2      k5n92   5*   8    21   active  quorum node
 3      k5n94   5*   8    21   active
 5      k5n96   5*   8    21   active
 6      k5n97   5*   8    21   active  quorum node
 7      k5n98   5*   8    21   active
 8      k5n99   5*   8    21   active  quorum node                                                            
.fi
.sp
.HP 3
3. To displays summary information, issue this command: 
.sp
.nf
mmgetstate -s
.fi
.sp
The system displays output similar to:
.sp
.nf
Node number Node name GPFS state
------------------------------------------
1 k154n05 active
Summary information
---------------------
Number of nodes defined in the cluster: 8
Number of local nodes active in the cluster: 8
Number of remote nodes joined in this cluster: 0
Number of quorum nodes defined in the cluster: 2
Number of quorum nodes active in the cluster: 2
Quorum = 1*, Quorum achieved
.fi
.sp
.RE
.SH "See also"
.PP
mmchconfig Command
.PP
mmcrcluster Command
.PP
mmshutdown Command
.PP
mmstartup Command
.SH "Location"
.PP
\fB/usr/lpp/mmfs/bin\fR