After running cfmgr, the following command can be used to validate LUN connectivity and MPIO control:
# lsdev -Cc disk
hdisk0 Available 00-08-00 SAS Disk Drive
hdisk1 Available 00-08-00 SAS Disk Drive
hdisk2 Available 03-00-01 PURE MPIO Drive (Fibre)
root@hclaix:/# lspath -l hdisk2 -F "status:name:path_id:parent:connection"
Enabled:hdisk2:0:fscsi0:21000024ff391bbf,1000000000000
Enabled:hdisk2:1:fscsi0:21000024ff3855bd,1000000000000
Enabled:hdisk2:2:fscsi1:21000024ff385093,1000000000000
Enabled:hdisk2:3:fscsi1:21000024ff385009,1000000000000
Enabled:hdisk2:4:fscsi2:21000024ff391bbe,1000000000000
Enabled:hdisk2:5:fscsi2:21000024ff3855bc,1000000000000
Enabled:hdisk2:6:fscsi3:21000024ff385092,1000000000000
Enabled:hdisk2:7:fscsi3:21000024ff385008,1000000000000 The command output from the above displays the following:
- 8 logical paths for hdisk2 (this AIX system has 4 dual-port HBAs).
- The connection is the array target port wwpn and host LUN ID.
- Example: 21000024ff391bbf,1000000000000 (host LUN ID = 1 as set in GUI/CLI)
Run the following command to check disk attributes set by the Pure ODM definition (the below is an example only):
# lsattr -El hdisk2
PCM PCM/friend/Pure Path Control Module False
PR_key_value none Reserve Key True+
algorithm shortest_queue Algorithm True+
clr_q no Device CLEARS its Queue on error True
hcheck_cmd test_unit_rdy Health Check Command True+
hcheck_interval 10 Health Check Interval True+
hcheck_mode nonactive Health Check Mode True+
location Location Label True+
lun_id 0x1000000000000 Logical Unit Number ID False
lun_reset_spt yes SCSI LUN reset True
max_transfer 0x400000 Maximum Transfer Size True
node_name 0x524a9371154d7413 Node Name False
pvid 00fa5f3dc329d2040000000000000000 Physical Volume ID False
q_err yes Use QERR bit False
q_type simple Queue TYPE True
queue_depth* 256 Queue DEPTH True+
reassign_to 120 REASSIGN time out True
reserve_policy no_reserve Reserve Policy True+
rw_timeout 60 READ/WRITE time out True
scsi_id 0xc0e00 SCSI ID False
start_timeout 60 START UNIT time out True
timeout_policy fail_path Timeout Policy True+
ww_name 0x524a9371154d7413 FC World Wide Name False
* NOTE: The 256 queue depth setting in the ODM should be treated as a possible starting point, and may need to be adjusted based on host environment variables.