Managing
SPARC Host I/O Reconfiguration Policy
For some SPARC servers, Oracle ILOM provides a policy that enables system administrators to
control whether the host IO paths are optimized and require modification at the next power on or
power reset. By default, the host I/O reconfigure policy is enabled and configurable from the Oracle
ILOM CLI or web interface. For further details about setting this policy in Oracle ILOM, see the
following table.
Note - Reconfiguring the I/O paths will change the PCIe addresses
and external addresses associated with boot devices.
Note - If the PCIE switches in the I/O path are not currently
in use, and ioreconfigure is set to true, configure the I/O paths
for maximum connectivity. Otherwise, configure the new paths for
optimal I/ O bandwidth
Table 79 SPARC Host I/O Reconfiguration Policy Properties
|
|
|
|
IO Reconfigure Policy
(ioreconfigure=) |
true |
false|true|add_only
true – When enabled, Oracle ILOM (if necessary) will check and reconfigure the I/O
paths each time the server SP or PDomain is powered on or reset.
Note: PCIe switches will
be configured to create the minimum required number of virtual switches
to connect all of the available root complexes, which might result
in changes to the I/O paths. false – When enabled, Oracle ILOM will
not check and reconfigure the I/O paths each time the server SP
or PDomain is powered on or reset. add_only – When enabled and when a new
CMP (root complex) has been added since the last boot or reset,
Oracle ILOM will reconfigure the I/O paths for optimal bandwidth.
Note: When the control
domain creates its first guest domain, the IO Reconfigure Policy
property is automatically set to add_only.
CLI Syntax for IO Reconfigure Policy
For SPARC single-server SP, type:
set /SP/Host
ioreconfigure=true|false|add_only
For SPARC multi-domain server SP, type:
set /Servers/PDomains/PDomain_n/Host
ioreconfigure=true|false|add_only |
|