Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

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In some cases, if the master switching operation is interrupted by another
reconfiguration operation, the master change fails. In this case, the existing master
remains the master of the cluster. After the reconfiguration is complete, reissue
the vxclustadm setmaster command to change the master.
If the master switching operation has started the reconfiguration, any command
that initiates a configuration change fails with the following error:
Node processing a master-switch request. Retry operation.
If you see this message, retry the command after the master switching has
completed.
Determining if a LUN is in a shareable disk group
The vxdisk utility manages VxVM disks. To use the vxdisk utility to determine
whether a LUN is part of a cluster-shareable disk group, use the following
command:
# vxdisk list accessname
where accessname is the disk access name (or device name).
For example, a portion of the output from this command (for the device c4t1d0)
is shown here:
Device: c4t1d0
devicetag: c4t1d0
type: auto
clusterid: cvm2
disk: name=shdg01 id=963616090.1034.cvm2
timeout: 30
group: name=shdg id=963616065.1032.cvm2
flags: online ready autoconfig shared imported
...
Note that the clusterid field is set to cvm2 (the name of the cluster), and the
flags field includes an entry for shared. The imported flag is only set if a node
is a part of the cluster and the disk group is imported.
453Administering cluster functionality (CVM)
Administering VxVM in cluster environments