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Using S.M.A.R.T. Disk Monitor 143

1.40 Storage Area Network (SAN) I/O Stat

This function can be equated with the standard Unix iostat program. It is designed to show throughput and errors

measured at each fibre channel controller port. This feature does not issue any I/Os to any fibre channel peripherals.

It just queries your local HBAs via the SNIA HBA API library for cumulative totals it maintains.

Syntax:

smartmon-ux -fciostat [-h] [-k] [-r] [-t] [-x] [-?] [<interval>] [<count>]

Where:

-h Suppress descriptive headers between each polling interval

-k Convert words transmitted and received to kilobytes/sec (each word is 4 bytes long)

-r Display raw values (do not calculate totals over time)

-t Display timestamp column

-x Display Extended statistical data columns.

-? Displays Usage and header information. This must be only option after -fciostat

interval Period in seconds between each poll. If you do not enter an interval, program will display cumulative

totals

count Number of iterations program should perform before exiting. This must be used in conjunction with an

interval.

Example #1: Display Usage and Headers

./smartmon-ux -fciostat -?

Usage: ./smartmon-ux -fciostat [ options...] [ <interval> ] [ <count> ]

Options are:

-h Suppress extra headers between each polling period

-k Display stats in KB/sec (1 KB = 1000 Bytes)

-r Display raw rules (don't calculate totals over time)

-t Display timestamp

-x Display extended information

-? Display help information

<interval> = seconds between each poll

<count> = number of iterations before exiting

Legend:

tps Transactions per second (Total frames transmitted & received)

Tx_Fr/s Transmitted frames per second

Rx_Fr/s Received frames per second

Words_T Words (4 bytes each) transmitted

Words_R Words (4 bytes each) received

LIPs LIP events on arbitrated loop

NOSs NOS events on switched fabric

Errs Error frames

DumpF Dumped frames

LinkF Link failures

SyncF Loss of SYNCs

SignF Loss of signals

ProtE Primitive sequential protocol errors

TrxE Invalid transmission words

CRCE Invalid CRCs

Note - Not all HBAs and/or HBA drivers support reporting any or all of this information

Example #2: Poll and report totals every 10 seconds.

This is how the fciostat will normally be used. The fields shown in blue are the ones that only appear if the -x (for

extended) flag is selected. Comments are in {violet}

smartmon-ux -fciostat -k -x -t -h 10

Linux 2.4.9-18smp (Itanium.sanmanager.com) 01/07/04 {O/S version followed by fully qualified host name,

then date}

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