User`s guide

Chapter 8 Virtual Host Bus Adapters (vHBAs) 147
The Oracle Fabric Interconnect relies on fibre channel’s Registered State Change
Notification (RSCN) to send target-state updates from the remote switch to the
Oracle Fabric Interconnect. The Oracle Fabric Interconnect’s IOP learns the update
and notifies the host server of any changes. However note that RSCN is turned off
by default on some fibre-channel switches.
RSCN does not support reporting LUN state changes (add or remove). To
compensate for this RSCN limitation, you must manually run rescan for a vHBA to
detect any LUN level changes.
Syntax
Parameter Description
set vhba <vhba-name>.<server-profile> [<wildcard>] prescan
set vhba <vhba-name>.<server-profile> remove-prescan
set vhba <vhba-name>.<server-profile> rescan
show vhba <vhba-name>.<server-profile> [<wildcard>] targets [-detail]
Parameter Description
-detail An optional modifier that allows displaying detailed information (if available)
for the vHBA.
prescan Configures prescan state for an unbound vHBA.
remove-prescan Removes a prior configured prescan state, which is required in order to re-
issue a new prescan state. Once you issue a prescan, the configuration resides
on the I/O card. The system is incapable of receiving any LUN changes
through RSCN. You can issue prescan several times, but, to detect LUN changes,
the prior prescan state must be removed (remove-prescan) from the vHBA
before you can prescan again.
rescan Configures rescan state for a bound vHBA. RSCN does not support reporting
LUN state changes. Because of this RSCN limitation, you must manually run
rescan for a vHBA to detect LUN changes. When running rescan, if any vHBAs
are in down state, the rescan process runs to completion then displays the
vHBAs in down state.
targets Displays the storage targets attached to a vHBA.
<wildcard> Allows specifying selected wildcard characters (for example, *) to facilitate
executing a command for one or more vHBAs.