3.7.0 HP StorageWorks HP Scalable NAS File Serving Software command reference guide HP Scalable NAS for Linux (AG513-96003, October 2009)

Active and inactive membership partitions
A membership partition can be either active or inactive. (This attribute is reported in
the last field of the record displayed by the mprepair --get_current_mps
command.) The current membership partitions should all be active. If there are old
membership partitions in the cluster, you may want to either remove them or mark
them as inactive.
A cluster could have an old membership partition if the disk containing it becomes
inaccessible and you then add another partition in its place. When the disk access
problem is corrected, the old membership partition will still be on the disk and will
be marked active.
When a membership partition is active, the disk containing the partition cannot be
imported into the cluster. You may see this situation if you want to import a disk that
was previously used by another cluster.
To fix this problem, use the --inactivate_mp option (described under “mprepair
Options” below) to change the state of the membership partition to “inactive.” You
can then import the disk into the cluster.
Export configuration changes
When you change the membership partition configuration with mprepair, it updates
the membership list on the local server. It also updates the lists on the disks containing
the membership partitions specified in the local MP file.
After making changes with mprepair, you will need to export the configuration to
the other servers in the cluster. To do this, start HP Scalable NAS on the server where
you ran mprepair and then connect to the HP Scalable NAS Management Console.
Select Tools > Configuration Utility to display the Configure Cluster window and go
to the Cluster Wide Configuration tab. Select the other servers in the Address column
and then click Export.
mprepair options
HP Scalable NAS can operate with either one membership partition or three
membership partitions. To ensure that a membership partition is always available,
HP recommends that you use three membership partitions.
Display membership partitions. To display information about membership partitions,
run the following command:
Cluster commands32