Rpc Time-Out Or Loss Of Connection - Sun Microsystems Sun Enterprise 10000 Dynamic Reconfiguration User Manual

The DR feature allows the user to reconfigure the hardware while the operating
system is running. Thus, DR is required to make an IDN aware of the changes so
that the IDN can maintain consistent, up-to-date information about the hardware.
DR accomplishes this requirement by unlinking the domain from the IDN,
reconfiguring the hardware, and relinking the domain to the IDN. The unlinking
and relinking of the domain occurs during the Complete Attach or Complete Detach
phase of the DR operation. DR determines if the domain is a member of an IDN, and
it performs the unlinking and relinking of the domain during the Complete phase.
No interaction is needed by the user. However, if a member domain is in an unkown
state (that is, AWOL), the unlink operation will not succeed, especially if the domain
is in a non-responsive state. If one or more domains were in an unknown state when
you attempted to perform a DR operation, you must unlink all of the AWOL
domains within the IDN in a single step (that is, use the domain_unlink(1M)
command with all of the names of the AWOL domains).
During the period in which the domain is not linked to the IDN, no transmission to
or from the domain are allowed. In contrast, the domain remains a member of the
IDN as defined in the domain_config(4) file on the SSP, and the domain continues
to be listed as a member of the IDN when you use the domain_status(1M)
command.
Note – Due to the interaction between the DR and IDN features, only one DR or
IDN operation is allowed at any given time within a single Sun Enterprise 10000
system.
Certain conditions may require you to use the force option. In the context of a DR
operation, you can use the DR force option, which is passed to the
domain_unlink(1M) command. When used on a domain that is a member of an
IDN, the force option should be used with extreme care. See the Sun Enterprise 10000
Inter-Domain Networks User Guide for more information about the force option and its
use.

RPC Time-Out or Loss of Connection

The dr_daemon(1M), which runs in each domain, communicates with Hostview
and the dr(1M) shell application (both of which run on the SSP) by way of Remote
Procedure Calls (RPCs). If an RPC time-out or connection failure is reported during
10 Sun Enterprise 10000 Dynamic Reconfiguration User Guide • February 2000