5.3.2 Adding or Moving Storage Units
You create and manipulate storage units (in the form of storagesets) using
ACS commands at the HSG80 array controller. Each unit has a unique LUN,
which the operating system uses to address the target of an I/O request.
For the most part, you can manipulate existing storage units in a cluster as
long as you take care to coordinate any changes with the LSM, file system,
or application use of those storagesets. If you create new storage units,
you must ensure that new device special files are created for the associated
LUNs and, if the new storage units involve the addition of new disks, you
must follow the procedure discussed in Section 5.3.1 for adding those disks.
You do not need to reboot member systems to perform these procedures.
5.3.3 Adding or Replacing a KGPSA Adapter
When you replace a KGPSA adapter in a Fibre Channel configuration, you
must perform the following tasks:
•
If this adapter is to be used in an arbitrated loop configuration, configure
it as described in Section 4.5.3.
•
Update the target ID mapping for the old adapter with the new adapter’s
worldwide name.
•
Delete the connection to the old adapter in all HSG80 controllers to
which it was attached.
This section discusses the following topics:
•
Replacing a KGPSA adapter in a cluster
•
Adding a new Fibre Channel bus to a cluster
5.3.3.1 Replacing a KGPSA Adapter in a Cluster
To replace a KGPSA adapter in a cluster, follow these steps:
1.
Remove the member system from the cluster or ASE.
2.
Use the
emxmgr
utility to display the information for the Fibre Channel
topology for the host bus adapter to be replaced. The following example
uses
emx1
:
#
/usr/sbin/emxmgr -t emx1
emx1 state information:
Link :
connection is UP
Point to Point
Fabric attached
FC DID 0x210413
5–6 Troubleshooting and Component Replacement Guidelines
