scsimgr SCSI Management and Diagnostics utility on HP-UX 11i v3 (March 2008)

EVPD page 0x83 description association = 0
EVPD page 0x83 description type = 3
World Wide Identifier (WWID) = 0x600508b300903330ec569c5839ab003c
Total number of Outstanding I/Os = 0
Maximum I/O timeout in seconds = 30
Maximum I/O size allowed = 2097152
Maximum number of active I/Os allowed = 8
Maximum queue depth = 8
Queue full delay count = 0
Asymmetric state = ACTIVE/OPTIMIZED
Device preferred path = No
Relative target port identifier = 2
Target port group identifier = 2
STATUS INFORMATION FOR LUN PATH : lunpath45
Generic Status Information
SCSI services internal state = FAILED
Open close state = ACTIVE
Protocol = fibre_channel
EVPD page 0x83 description code = 1
EVPD page 0x83 description association = 0
EVPD page 0x83 description type = 3
World Wide Identifier (WWID) = 0x600508b300903330ec569c5839ab003c
Total number of Outstanding I/Os = 0
Maximum I/O timeout in seconds = 30
Maximum I/O size allowed = 2097152
Maximum number of active I/Os allowed = 8
Maximum queue depth = 8
Queue full delay count = 0
Asymmetric state = ACTIVE/OPTIMIZED
Device preferred path = Yes
Relative target port identifier = 1
Target port group identifier = 1
Notes:
• For most devices with asymmetric access, the ‘scsimgr activate’ command causes the
lunpaths in ‘ACTIVE/OPTIMIZED’ asymmetric state to go to ‘ACTIVE/NON-OPTIMIZED’
asymmetric state, and the set of lunpaths in ‘STANDBY’ or ‘ACTIVE/NON-OPTIMIZED
asymmetric state to go ‘ACTIVE/OPTIMIZED’.
• If executed on a device which does not support explicit asymmetric access, ‘scsimgr
activate’ will fail and a message similar to the one below will be displayed:
# scsimgr -f activate -D /dev/rdisk/disk20
scsimgr: The ioctl call for activate standby paths failed with return
value of 22 (Invalid argument) for /dev/rdisk/disk20.
The error is returned for one of the following reasons:
LUN is neither asymmetric nor active-passive device
There are no standby paths available to the device
Device do not support manual activation of standby paths
Asymmetric access is disabled on the LUN or DDR
• For devices implementing the T10 ALUA standard, if the settable attribute alua_enabled is set
to ‘false’ for the device, the SCSI stack treats the device as if it does not support asymmetric
access. All its lunpaths will be used for I/O transfer according to the I/O load balancing
policy set for the device.
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