Novell BUSINESS CONTINUITY CLUSTERING 1.2.1 - ADMINISTRATION, Руководство администратора

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144 BCC 1.2.1: Administration Guide for OES 2 SP2 Linux
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C.2 Creating NSS Volumes
After you create the pool and its mirror, you must create an NSS volume on each of the pool
resources so that it works properly as a cluster resource. To create an NSS volume on a shared pool,
follow the instructions in “
Creating NSS Volumes on a Shared Pool ” in the OES 2 SP2: Novell
Cluster Services 1.8.7 for Linux Administration Guide .
You must create at least one shared volume in a cluster-enabled pool. Typically, all volumes are
created when you initially set up the cluster resource and before you need to cluster migrate or fail
over the resource to other servers in the cluster.
You can add volumes to the pool later by cluster migrating the pool cluster resource back to the
original server node in the cluster where the pool was created. Otherwise, you get an eDirectory
TM
error because the tools only look for the Pool object under its current server node, and not under the
original node where it it was created.
To create or modify home directories, Distributed File Services junctions, or any other elements that
are managed through eDirectory objects, you must cluster migrate the pool resource back to the
node where it was created before you perform those management tasks. This restriction also applies
to management tasks like renaming a pool or volume that change information in the eDirectory
objects for the shared pool or volume.
C.3 Novell Cluster Services Configuration and
Setup
After configuring NSS mirroring and creating a volume on the mirrored NSS partition and pool, if
you did not cluster-enable the NSS pool on the mirrored partition when you created it, do so by
following the instructions in “
Cluster-Enabling an Existing NSS Pool and Its Volumes ” in the OES 2
SP2: Novell Cluster Services 1.8.7 for Linux Administration Guide .
When you cluster-enable a shared disk pool, the commands to start and stop the pool resource are
automatically added to the resource load and unload scripts.
C.4 Checking NSS Volume Mirror Status
After you have configured NSS mirroring with Novell Cluster Services
TM
, you should check to
ensure that it is working properly in a cluster environment.
1 Ensure that the volumes on the cluster-enabled pool are mounted on an assigned server by
entering
nsscon volumes
at the server console.
2 Enter
exit
to exit the NSSCON utility.
3 Check the mirror status of the mirrored partition by starting NSSMU and selecting the RAID
device you created in
Step 11 on page 143 .
NSSMU displays the mirror status of the RAID device. If the partitions are still synchronizing,
it could take time for NSSMU to display the mirror status.
4 Migrate the pool to another server in the cluster and check again to ensure that the volumes on
the pool are mounted by entering
nsscon volumes
at the server console.
Enter
exit
to exit the NSSCON utility.
5 Using NSSMU, check the mirror status of the partition again.