Originally posted by: SystemAdmin

AIX 5.3 ML3 o/s booting from Clariion powerpath device EMC.CLARiiON.fcp.rte 5.2.0.2 COMMITTED
powermt display:
Symmetrix logical device count=0
CLARiiON logical device count=3
==============================================================================

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Host Bus Adapters

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• I/O Paths

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• Stats

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  1. HW Path Summary Total Dead IO/Sec Q-IOs Errors

==============================================================================
0 fscsi0 optimal 3 0 - 0 0
1 fscsi1 optimal 3 0 - 0 0

fpiadm1#lsdev -Cc adapter
ent0 Available 03-08 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
ent1 Available 03-09 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
ent2 Available 06-08 10/100/1000 Base-TX PCI-X Adapter (14106902)
ent3 Available 0A-08 10/100/1000 Base-TX PCI-X Adapter (14106902)
fcs0 Available 09-08 FC Adapter
fcs1 Available 0B-08 FC Adapter
ide0 Available 07-08 ATA/IDE Controller Device
sa0 Available 05-08 IBM 8-Port EIA-232/RS-422A (PCI) Adapter
sisscsia0 Available 04-08 PCI-X Dual Channel Ultra320 SCSI Adapter
sisscsia1 Available 08-08 PCI-X Dual Channel Ultra320 SCSI Adapter
usbhc0 Available 02-08 USB Host Controller (33103500)
usbhc1 Available 02-09 USB Host Controller (33103500)
vsa0 Available LPAR Virtual Serial Adapter
fpiadm1#lsdev -Cc disk
hdisk0 Available 08-08-00-5,0 16 Bit LVD SCSI Disk Drive

nmon shows:
Adapter-I/O-Statistics
Name %busy read write xfers Disks Adapter-Type
fscsi1 0.0 0.0 0.0 KB/s 0.0 3 FC SCSI I/O Controlle
fscsi0 0.0 0.0 0.0 KB/s 0.0 3 FC SCSI I/O Controlle
fcs1 0.0 0.0 0.0 KB/s 0.0 5 FC Adapter
ide0 0.0 0.0 0.0 KB/s 0.0 1 ATA/IDE Controller De
sisscsia0 0.0 0.0 0.0 KB/s 0.0 1 PCI-X Dual Channel Ul
sisscsia1 0.0 0.0 0.0 KB/s 0.0 1 PCI-X Dual Channel Ul
fcs0 0.0 0.0 0.0 KB/s 0.0 2 FC Adapter
TOTALS 7 adapters 0.0 0.0 KB/s 0.0 16 TOTAL(MB/s)=0.0

Remove hdisk
hdisk1 Available 04-08-00-4,0 16 Bit LVD SCSI Disk Drive
hdisk2 Available 09-08-02 EMC CLARiiON FCP RAID 1/0 Disk
hdisk3 Available 09-08-02 EMC CLARiiON FCP RAID 1/0 Disk
hdisk4 Available 09-08-02 EMC CLARiiON FCP RAID 5 Disk
hdisk5 Available 0B-08-02 EMC CLARiiON FCP RAID 1/0 Disk
hdisk6 Available 0B-08-02 EMC CLARiiON FCP RAID 1/0 Disk
hdisk7 Available 0B-08-02 EMC CLARiiON FCP RAID 5 Disk
hdisk8 Available 09-08-02 MPIO Other FC SCSI Disk Drive
hdisk9 Available 09-08-02 MPIO Other FC SCSI Disk Drive
hdiskpower0 Available 0B-08-02 PowerPath Device
hdiskpower1 Available 0B-08-02 PowerPath Device
hdiskpower2 Available 0B-08-02 PowerPath Device

Removing hdisk8, hdisk9 (MPIO devices)and nmon shows:

Adapter-I/O-Statistics
Name %busy read write xfers Disks Adapter-Type
fscsi1 5.0 0.0 323.9 KB/s 73.0 3 FC SCSI I/O Controlle
fscsi0 0.0 0.0 0.0 KB/s 0.0 3 FC SCSI I/O Controlle
fcs1 5.0 0.0 323.9 KB/s 73.0 3 FC Adapter
ide0 0.0 0.0 0.0 KB/s 0.0 1 ATA/IDE Controller De
sisscsia0 0.0 0.0 0.0 KB/s 0.0 1 PCI-X Dual Channel Ul
sisscsia1 0.0 0.0 0.0 KB/s 0.0 1 PCI-X Dual Channel Ul
TOTALS 6 adapters 0.0 647.8 KB/s 146.0 12 TOTAL(MB/s)=0.6


fcs0 disappears. fscsi0 shows in nmon and powermt commands.

What is the underlying command used by nmon to display the adapter info???

Originally posted by: nagger

If your are looking for a discussion on this topic then please find the duplicate question on the Performance Tools forum.

Originally posted by: SystemAdmin

Nigel,

I started thinking that it wasn't an nmon problem, since as you pointed out and I ran for myself the perfstat_diskadapter() function doesn't "see" fcs0 to begin with. It did when the MPIOs were there, (fcs0 saw 2, fcs1 saw 5), when they were rmdev'd fcs0 disappears, fcs1 sees 3 devices/disks.

Point me to the right place.....can't open a PMR since it involves nmon and perfstat_diskadapter() function. oR CAN i?