Re: [smartmontools-support] Problem with 3ware 9690SA RAID - SOLVED

[G M. <gmc...@bt...>]

Yes, here is a script that uses the 3ware command line utility (tw_cli) to
regenerate smartd.conf.

#!/bin/bash
#
# Written by G. McAlister, January 28th 2013
#
# Simple (i.e. not much error handling) script to build the smartd.conf file
for a 3ware raid controller.
#
# The problem this script solves is that the vports assigned by the
controller to each drive at boot time is not persistent
# from one boot to the next, and smartd requires addressing the drives by
their vport number, so the smartd.conf file
# may (will?) have inconsistent drive addresses after each boot.
# The solution here is to use the 3ware command line utility tw_cli to find
the allocated vports and to build a fresh
# smartd.conf file using them.
#
# This script must be run as root.

# Set up the smartd.conf file. In production, this would, of course, go in
the /etc directory.
smartfile="smartd.conf"
firstline="This smartd.conf file was automatically generated by the
smart_3ware script"
driveline="/dev/twa0 -d 3ware,x -a -o on -S on -R 5! -I 194 -I 9
-s(S/../.././01|L/../../6/01) -m gmc...@bt..."

declare -a vports

# Find the controller using "tw_cli show", find the line starting with "c"
and return the first field of that line.
c=$(tw_cli show | awk '/^c/ {print $1}')

# Find the vports using the "show drivestatus" command of tw_cli
# We want the lines beginning with "p" and a "drive status" of "OK". The
first field of this line is the vport
vports=( $(tw_cli "/$c" show drivestatus | awk '(/^p/) && ($2 ~ /^OK$/)
{print $1}') )

nports=${#buff2[@]}

# Save the old smartd.conf file if necessary
if [ -e "$smartfile" ]
then
        mv "$smartfile" "$smartfile".sav
fi

# Create the smartd.conf file, and add the first line
touch "$smartfile"
echo "$firstline" > "$smartfile"

# For each vport, replace the ",x" in the driveline with the vport and add
the line to the smartd.conf file
for port in "${vports[@]}"
do
        echo "$driveline" | sed s/,x/,$port/ >> "$smartfile"
done

exit 0
#
# Ends

I hope this may be useful for others with the same problem.

-----Original Message-----
From: Alex Samorukov [mailto:ml...@os...] 
Sent: 25 January 2013 22:29
To: G McAlister
Cc: sma...@li...
Subject: Re: [smartmontools-support] Problem with 3ware 9690SA RAID - SOLVED

On 01/25/2013 07:13 PM, G McAlister wrote:
> Hi,
> It seems that the VPort changed after a reboot, so the drives that I 
> thought were causing a problem were actually empty VPorts.
>
> I can confirm that I can access all drives when I use the correct VPort.
>
> Now I need a robust way to ensure that the VPort specified in 
> smartd.conf is indeed the correct VPort for that drive, even after a
reboot.
I think you can regenerate smartd.conf on boot with some shell magic and
3ware utility. Correct fix should be to implement DEVICESCAN for 3ware, i
can try to do this, but i will need hw access.

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