Dynamic Reconfiguration Issues

This section describes different issues that involve dynamic reconfiguration on Sun Enterprise 10000 domains.

DR Model 3.0

You must use DR 3.0 on Sun Enterprise 10000 domains that run the Solaris OS beginning with the Solaris 9 12/03 release. DR model 3.0 refers to the functionality that uses the following commands on the SSP to perform domain DR operations:

• addboard

• moveboard

• deleteboard

• showdevices

• rcfgadm

You can run the cfgadm command on domains to obtain board status information. DR model 3.0 also interfaces with the Reconfiguration Coordination Manager (RCM) to coordinate the DR operations with other applications that are running on a domain.

For details about DR model 3.0, refer to the Sun Enterprise 10000 Dynamic Reconfiguration User Guide.

DR and Bound User Processes

For this Solaris release, DR no longer automatically unbinds user processes from CPUs that are being detached. You must perform this operation before initiating a detach sequence. The drain operation fails if CPUs are found with bound processes.

Network Device Removal Fails When a Program Is Holding the Device Open (5054195)

If a process is holding open a network device, any DR operation that would involve that device fails. Daemons and processes that hold reference counts stop DR operations from completing.

Workaround: As superuser, perform the following steps:

1. Remove or rename the /rplboot directory.

2. Shut down NFS services.

   # sh /etc/init.d/nfs.server stop

3. Shut down Boot Server services.

   # sh /etc/init.d/boot.server stop

4. Perform the DR detach operation.

5. Restart NFS services.

   # sh /etc/init.d/nfs.server start

6. Restart Boot Server services.

   # sh /etc/init.d/boot.server start