Use the following procedure to add disks to the coordinator disk group, or to remove disks from the coordinator disk group.
Note the following about the procedure:
You must have an odd number (three minimum) of disks/LUNs in the coordinator disk group.
The disk you add must support SCSI-3 persistent reservations; see Viewing guidelines for checking SCSI-3 support.
You must reboot each system in the cluster before the changes made to the coordinator disk group take effect.
To remove and replace a disk in the coordinator disk group
/etc/vxfendg
includes the name of the disk group (typically, vxfencoorddg
) that contains the coordinator disks, so use the command:
# vxdg -tfC import 'cat /etc/vxfendg'
-t
specifies that the disk group is imported only until the system restarts.
-f
specifies that the import is to be done forcibly, which is necessary if one or more disks is not accessible.
vxdiskadm
.