Category Archives: Pure Storage

Pure Storage data reduction report

I had a request to publish a daily report that outlines our data reduction numbers for each LUN on our production Pure storage arrays.  I wrote a script that will log in to the Pure CLI and issue the appropriate command, using ‘expect’ to do a screen grab and output the data to a csv file.  The csv file is then converted to an HTML table and published on our internal web site.

The ‘expect’ commands (saved as purevol.exp in the same directory as the bash script)

#!/usr/bin/expect -f
spawn ssh pureuser@10.10.10.10
expect “logon as: ”
send “pureuser\r”
expect “pureuser@10.10.10.10’s password: ”
send “password\r”
expect “pureuser@pure01> ”
send “purevol list –space\r”
expect “pureuser@pure01> ”
send “exit\r”

.

The bash script (saved as purevol.sh):

#!/bin/bash

# Pure Data Reduction Report Script
# 11/28/16

#Define a timestamp function
#The output looks like this: 6-29-2016/8:45:12
timestamp() {
date +”%m-%d-%Y/%H:%M:%S”
}

#Remove existing output file
rm /home/data/pure/purevol_532D.txt

#Run the expect script to create the output file
/usr/bin/expect -f /home/data/pure/purevol.exp > /home/data/pure/purevol_532D.txt

#Remove the first ten lines of the output file
#The first 12 lines contain login and command execution info not needed in the report
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt
sed -i ‘1d’ /home/data/pure/purevol_532D.txt

#Remove the last line of the output file
#This is because the expect script leaves a CLI prompt as the last line of the output
sed -i ‘$ d’ /home/data/pure/purevol_532D.txt

#Add date to output file, remove previous temp files
rm /home/data/pure/purevol_532D-1.csv
rm /home/data/pure/purevol_532D-2.csv
echo -n “Run time: ” > /home/data/pure/purevol_532D-1.csv
echo $(timestamp) >> /home/data/pure/purevol_532D-1.csv

#Add titles to new csv file
echo “Volume”,”Size”,”Thin Provisioning”,”Data Reduction”,” “,” “,”Total Reduction”,” “,” “,”Volume”,”Snapshots”,”Shared Space”,”System”,”Total” >> /home/data/pure/purevol_532D-1.csv

#Convert the space delimited file into a comma delimited file
sed -r ‘s/^\s+//;s/\s+/,/g’ /home/data/pure/purevol_532D.txt > /home/data/pure/purevol_532D-2.csv

#Combine the csv files into one
cat /home/data/pure/purevol_532D-1.csv /home/data/pure/purevol_532D-2.csv > /home/data/pure/purevol_532D.csv

#Use the csv2htm perl script to convert the csv to an html table
#csv2html script available here:  http://web.simmons.edu/~boyd3/imap/csv2html/
./csv2htm.pl -e -T -i /home/data/pure/purevol_532D.csv -o /home/data/pure/purevol_532D.html

#Copy the html file to the www folder to publish it
cp /home/data/pure/purevol_532D.html /cygdrive/C/inetpub/wwwroot

Below is an example of what the output looks like after the script is run and the output is converted to an HTML table.  Note there are columns missing to the right in order to fit the formatting of this post.  Also included are the numbers for Total reduction and snapshots.

Name Size Thin Provisioning Data Reduction
LUN001_PURE_0025_ESX_5T 5T 78% 16.4 to 1
LUN002_PURE_0025_ESX_5T 5T 75% 7.8 to 1
LUN003_PURE_0025_ESX_5T 5T 71% 9.3 to 1
LUN004_PURE_0025_ESX_5T 5T 87% 10.5 to 1

 

 

 

 

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