IBM Advanced SerialRAID Adapters SA33-3285-02 User Manual page 293

Advanced serialraid adapters
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secondary path, if one exists. You can prevent this switch by additionally
specifying the SSADISK_NOSWITCH flag.
This flag has support both for SSA logical disk drives and for SSA physical
disk drives. You cannot specify this flag and the SSADISK_SECONDARY flag
together.
SSADISK_SECONDARY
Opens the device using the secondary adapter as the path to the device. As a
result of hardware errors, the device driver might automatically switch to the
primary path, if one exists. You can prevent this switch by additionally
specifying the SSADISK_NOSWITCH flag.
This flag has support both for SSA logical disk drives and for SSA physical
disk drives. You cannot specify this flag and the SSADISK_PRIMARY flag
together.
SSADISK_NOSWITCH
If more than one adapter provides a path to the device, the device driver
normally switches from one adapter to the other as part of its error recovery.
This flag prevents the switch.
This flag has support both for SSA logical disk drives and for SSA physical
disk drives.
SSADISK_FORCED_OPEN
Forces the open whether another initiator has the device reserved or not. If
another initiator has the device reserved, the reservation is broken. Otherwise,
the open operation runs normally.
This flag has support only for SSA logical disks. You cannot specify this flag
and the SSADISK_FENCEMODE flag together.
SSADISK_RETAIN_RESERVATION
Retains the reservation of the device after a close operation by not issuing the
release. This flag prevents other initiators from using the device unless they
break the using system reservation.
Note: This flag does not cause the device to be explicitly reserved during the
close if it was not reserved while it was open.
This flag has support only for SSA logical disk drives. You cannot specify this
flag and the SSADISK_FENCEMODE together.
SSADISK_NO_RESERVE
Prevents the reservation of a device during an openx subroutine call to that
device. This operation is provided so a device can be controlled by two
processors that synchronize their activity by their own software procedures.
This flag overrides the setting of the attribute reserve_lock if the value of the
attribute is "yes". This flag has support only for SSA logical disk drives. You
cannot specify this flag and the SSADISK_FENCEMODE flag together.
SSADISK_SERVICEMODE
Opens an SSA physical disk in service mode. This flag wraps the SSA links on
Chapter 13. Using the Programming Interface
273

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