Complete Detach; Network Devices - Sun Microsystems Sun Enterprise 10000 Dynamic Reconfiguration User Manual

During the drain period, Hostview and dr(1M) are available to monitor the detach
progress. You can view the current status of the drain operation, including the
number of memory pages remaining to be drained, and the usage of devices on the
board. With this information, you can prepare the domain for detaching the
remaining board devices.
If you decide not to proceed with the detach operation, you can abort the operation,
and the memory on the board is returned to regular usage. You can also abort the
operation during the drain process or after the drain has been completed. If extreme
memory pressure exists during the drain, you will see little, or no, progression in the
percentage of drained pages, and you may want to abort the drain and wait until the
workload on the domain has decreased, enabling it to accommodate the reduction in
memory.
The drain operation is complete when all of the memory pages are free from usage.
You can then complete the detach operation.

Complete Detach

Before you can complete the detach operation, you must terminate all usage of board
resources (processors, memory, and I/O devices). DR terminates the use of memory,
processors, and network devices automatically, but you must terminate the use of all
non-network I/O devices.
Note – To identify the components that are on the board to be detached, use
drshow(1M), which is an option of the dr(1M) command, or use the display
windows in Hostview (select the Configuration menu and then choose the Board
pull-down menu and the Detach menu item). Another somewhat less informative
way to identify the components is to use the prtdiag(1M) command on the
domain.

Network Devices

DR automatically terminates usage of all network interfaces on the board that is
being detached. When you complete the detach operation, the dr_daemon(1M)
identifies all configured interfaces on the board being detached and issues the
following ifconfig(1M) commands on each such interface.
ifconfig interface down
ifconfig interface unplumb
Chapter 27