http://gibsonnet.net/blog/cgaix/html/vfcstat_blog.html

List disks paths

root@nimprod /etc/objrepos# lspath -F"name:connection:parent:path_status:status" | sort
hdisk0:500507777087cca4,0:fscsi0:Available:Enabled
hdisk0:500507777087cca4,0:fscsi2:Available:Enabled
hdisk0:500507777087ccad,0:fscsi0:Available:Enabled
hdisk0:500507777087ccad,0:fscsi2:Available:Enabled
hdisk0:500507777088cca4,0:fscsi1:Available:Enabled
hdisk0:500507777088cca4,0:fscsi3:Available:Enabled
hdisk0:500507777088ccad,0:fscsi1:Available:Enabled
hdisk0:500507777088ccad,0:fscsi3:Available:Enabled
hdisk1:500507777087cd5d,3000000000000:fscsi0:Available:Enabled
hdisk1:500507777087cd5d,3000000000000:fscsi2:Available:Enabled
hdisk1:500507777087cd5f,3000000000000:fscsi0:Available:Enabled

Enhancements on AIX 7.3

Statistics

# fcstat -t 1 -p scsi fcs0
FIBRE CHANNEL STATISTICS REPORT: fcs0
Device Type: Virtual Fibre Channel Client Adapter (adapter/vdevice/IBM,vfc-client)
TP         Read Reqs(K)     Write Reqs(K)   Read (GB)  Write (GB)
===== ================= ================= =========== ===========
SCSI                  9              2314           0         203
SCSI                  9              2315           0         203
SCSI                  9              2316           0         203
SCSI                  9              2317           0         203

Statistics on SFP modules

# fcstat -e fcs0
FIBRE CHANNEL STATISTICS REPORT: fcs0
Device Type: PCIe3 2-Port 32Gb FC Adapter (df1000e314101506) (adapter/pciex/df1000e31410150)
...etc...

FC SFP Information
  Vendor Name: AVAGO
  Vendor OUI:  0000176a
  Vendor PN:   AFBR-57G5MZ-ELX
  Temperature: 42.371 C     [Range -128 C - +128 C]
  Voltage:     3.331 V      [Range 0 V - +6.55 V]
  TX Bias:     5.466 mA     [Range 0 mA - 131 mA]
  TX Power:   -1.4837 dBm   [Range -40 dBm - +8.2 dBm]
               0.7106 mW    [Range 0 mW - 6.5535 mW]
  RX Power:   -3.6866 dBm   [Range -40 dBm - +8.2 dBm]
               0.4279 mW    [Range 0 mW - 6.5535 mW ]

Opens the device in diagnostic mode by using the -d flag

# fcstat -d fcs0

FIBRE CHANNEL STATISTICS REPORT: fcs0
Device Type: 8Gb PCI Express Dual Port FC Adapter (df1000f114108a03) (adapter/pciex/df1000f114108a0)
Serial Number: 1A202029F7
Option ROM Version: 0278213D
ZA: U2D2.10X13
World Wide Node Name: 0x20000000C9D55D1E
World Wide Port Name: 0x10000000C9D55D1E
FC-4 TYPES:
  Supported: 0x0000012000000000000000000000000000000000000000000000000000000000
  Active:    0x0000010000000000000000000000000000000000000000000000000000000000
Class of Service: 3
Port Speed (supported): 8 GBIT
Port Speed (running):   0 GBIT
Port FC ID: 0x000000
Port Type: UNKNOWN
Attention Type:   Link Down
Topology:  UNKNOWN
Seconds Since Last Reset: 0
        Transmit Statistics     Receive Statistics
        -------------------     ------------------
Frames: 0                       0
Words:  0                       0

LIP Count: 0
NOS Count: 0
Error Frames:  0
Dumped Frames: 0
Link Failure Count: 4
Loss of Sync Count: 4
Loss of Signal: 5

AIX 7.3

List all the VFC adapters on your AIX system.

# vfcstat -l

List all the functions available for the given VFC adapter:

# vfcstat -d fcs0

To display error counts for a given VFC adapter.

# vfcstat -d fcs0 -e

Use the -s flag to display various statistics for a given VFC adapter. This is same as reading the proc file /proc/sys/adapter/fc/fcs0/stats. We’ve included the –F option as it displays formatted statistic output (which is easier to read!).

# vfcstat -d fcs0 -s -F

To display tunables of a given VFC adapter, use the -d and -f tunables options. This is same as reading proc file /proc/sys/adapter/fc/fcs0/tunables.

# vfcstat -d fcs0 -f tunables

To display VIOS host information of a given VFC adapter, use the -f hostinfo option. This is same as reading the proc file /proc/sys/adapter/fc/fcs0/hostinfo.

# vfcstat -d fcs0 -f hostinfo

To display WWPN information of a given VFC adapter, use the -f wwpn option. This is same as reading the proc file /proc/sys/adapter/fc/fcs0/wwpn.

# vfcstat -d fcs0 -f wwpn
0xc852100000000011

To reset all fields in the stats function for a given VFC adapter.

# vfcstat -d fcs0 -s –z

To reset all error counts for a given VFC adapter.

# vfcstat -d fcs0 -e –z